We've shared the answers to some of the most frequently asked questions about boilers, heating systems, servicing and maintenance. Can't find the answer? Contact us and we'll do our best to help.
Check out our glossary of heating terms to help you find what you are looking for.
Troubleshooting
If your boiler has shut down and is showing error code E133 or E28, then your condensate pipe may be frozen.
Winter Advice
If your boiler has stopped working in below zero temperatures, then it is likely your condensate pipe has frozen. Luckily it is quite simple to thaw and get your boiler up and running again without the need for an engineer. Follow our simple steps to get your boiler working again.
Trouble Shooting
Sometimes boilers need to be repressurised. This is quite normal and you can repressurise your boiler yourself. Our videos show you how, whether you have a rigid or a flexible filling loop, or Easy-Fill permanent filling link.
Troubleshooting, Future of Home Heating
We explain how to restart your air source heat pump and heating system again after a power cut.
General Boiler info, Troubleshooting
Water dripping through the tundish of your Megaflo cylinder could be a sign the air gap needs recharging. Read here or watch our video to learn how.
Energy Saving Tips, General boiler info, Winter Advice
We explain how to turn down the flow temperature of your condensing combination (combi) boiler.
General Boiler Info
All boilers need to have the water pressure topped up from time to time. This is quite normal and a simple job you can do yourself.
General Boiler info
It is quite normal to need to top up the water pressure in your boiler occasionally. This is a simple job that you can do yourself.
Gas Safety
If you can smell gas you need to act quickly. We explain what you need to do to stay safe.
Troubleshooting
If your boiler needs to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.
Boiler servicing
Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.
Boiler Servicing
If you have a Domestic & General Maintenance & Support plan, please follow our 3 simple steps to book your boiler service online.
Boiler Servicing
You have booked for a Baxi engineer to visit. Now we give some tips on how to ensure the visit goes smoothly
Warranty information
We explain how to register your boiler warranty, who is responsible for registering your boiler warranty and how to ensure your boiler warranty remains valid.
Warranty information
We explain how long is the warranty on a Baxi boiler, is a boiler warranty transferrable and how a Baxi boiler warranty works.
Future of Home heating
Check out if there are grants available in your area to help with the cost of installing air source heat pump
Future of Home heating
Is a heat pump right for me? Can a heat pump provide hot water? How efficient is a heat pump? We answer your questions about living with an air source heat pump
Future of Home heating
We explain the energy saving work needed before you fit an air source heat pump, where in your home you can have it and who can install it
Future of Home heating
What are heat pumps? We explain what an air source heat pump and a ground source heat pump is.
General Boiler info, Future of home heating, Energy Saving Tips
The government boiler upgrade scheme was launched in April 2022. It will provide a boiler upgrade grant to help owners of domestic and small non-domestic properties in England or Wales with the upfront cost of installing low carbon heating systems, such as heat pumps. It will run from 2022 to 2025.
General Boiler info, Warranty Information
If your radiators have cold patches at the bottom and you need to bleed them more regularly or your central heating system is making more noise than usual, be sure to tell your Gas Safe registered heating engineer when they come to give your boiler its annual service.
General Boiler info, Warranty Information
If sludge is allowed to build up, it can result in blocked pipes, inefficient radiators and damaged parts in the boiler. The heat exchanger in a boiler consists of many narrow pipes which the water passes through to heat up. If the narrow pipes become restricted or blocked, the boiler will shut down to prevent it from overheating and getting even more damaged. If the boiler breaks down because of sludge in the system, the repair work is not covered by the boiler warranty and could lead to expensive repair bills.
Boiler Servicing, Warranty Information
The common signs of sludge in the central heating system are:
General Boiler info, Warranty Information
Sludge, or magnetite, to give it its proper name, is a black substance in the central heating pipes made up of dissolved and rusted metal. It forms when the water in the system reacts with the metal in radiators and pipes.
Because sludge is heavier than water, it can settle in radiators and pipework and, if left to build up, it can damage the boiler and the system.
General Boiler info, Warranty Information
Replacing your boiler is a major investment and you want to know that you can rely on it to give you heating and hot water for many years. A boiler filter will catch dirt and debris in your central heating system before the water enters your boiler. This will help to prevent sludge building up in pipes and your radiators, which would make your boiler lose efficiency and could lead to higher energy bills.
General Boiler info, Warranty Information
The sludge that your magnetic filter collects will need to be removed because once the filter is filled up, it can’t catch any more debris. It will still allow the water to pass through, but will not collect any more sludge.
General Boiler info, Warranty Information
Your installer should fit a magnetic filter on the pipe that is returning the water to your boiler after it has been round the central heating system. This will prevent any debris that has been picked up on the circuit from entering your boiler. From 15th June 2022, having a magnetic filter fitted will be a requirement of the Building Regulations when you have a new boiler installed.
General Boiler info, Boiler Servicing, Warranty Information
Many boiler breakdowns that occur are due to sludge in the heating system. This ‘sludge’ (which is also known as magnetite) is caused by fragments of rust and other debris in the pipes that accumulates over time and, if left, can cause cold patches on your radiators, make your boiler work harder to heat your home and also can block or damage the components inside your boiler.
Boiler Servicing, General Boiler info, Warranty Information
Fitting a filter is considered Best Practice when installing a new boiler and is already included in a document called BS7593:2019 – Code of practice for the preparation, commissioning and maintenance of domestic central heating and cooling water systems.
Boiler Servicing, Warranty Information
The water in your central heating system flows from your boiler, where it is heated up, around all your radiators and then back to the boiler to be reheated and circulate again. A magnetic boiler filter is a small device that is installed into the pipework close to where the water goes back into your boiler.
Future of Home Heating
In order for the UK to meet the government’s target of net zero emissions by 2050, the way we heat our homes will have to change. The Government is planning to prevent the use of natural gas for heating new build homes in an effort to reduce carbon emissions.
Future of Home Heating
Yes, you can replace your existing gas boiler and no, you don’t have to do this before 2025. There is talk that only gas boilers that are ‘hydrogen ready’, i.e., they can be adapted easily and quickly to work on a 100% hydrogen supply
Future of Home Heating
Gas boilers will not be banned from 2025. However, from 2025 new build properties could be required to have low carbon heating, such as a heat pump,
Future of Home Heating
Our highly experienced team of experts is at the cutting edge of heat pump technology. Focused on quality, safety, and performance, we are helping to advance the use of heat pumps in residential and commercial buildings.
Future of Home Heating
There are a number of alternative heating systems, both available now or currently in development. Electric boilers, heat pumps and heat networks are already
Future of Home Heating
Net zero carbon is when the amount of carbon dioxide we add to the atmosphere is the same or less than as the amount taken out of the atmosphere. Achieving net
Winter Advice, Energy Saving Tips
By following Baxi’s top tips for reducing energy consumption, it’s possible to protect pockets and make our homes more efficient in the process.
General boiler info, Troubleshooting
Is it ok to turn off your boiler in summer? The short answer is: it depends on your home and your circumstances. Let’s go through those circumstances, and see which ones apply to you, so you know ‘what to do with your boiler in the summer?'
General boiler info, Winter Advice
As the nights draw in and the days get cooler, your boiler’s workload increases significantly. However, you may not have had your heating on for months. Ageing pipes, lower boiler pressure, grime building up inside your central heating system – there’s plenty that can happen over time that can reduce the effectiveness or even damage your boiler.
General boiler info, Winter Advice, Troubleshooting
Is your home not heating up as much as you’d like? Have you turned up your thermostat higher than you normally would? There’s a good chance that your radiators are not as efficient as they could be. A common cause of this is air trapped inside the heating system – and this is when to bleed your radiators.
General boiler info, Troubleshooting
When it comes to hot water temperature, everyone has a different preference on what’s ideal. Some like it hot, some like it too hot, and some like it warm. This guide is to help you set the right water temperature, and using BAXI boiler temperature settings to get your water temperature to your exact liking.
Even if you don’t have a BAXI boiler, we want to help you set your water temperature to what is most comfortable for you and everyone in your home. Most boilers have temperature controls, whether they’re combi boilers, heat-only boilers, or system boilers.
General boiler info, Troubleshooting
The most likely explanation for this is that there are bubbles of air trapped inside your radiator. Fortunately, this is the simplest issue to solve. All you need to do is bleed your radiator.
This can be done with only a radiator key, an old towel or rag or bucket to catch any water that comes out of the radiator. You can find out how to do this in our in-depth guide on how to bleed your radiator.
General boiler info, Winter Advice, Troubleshooting
Central heating systems are pretty complex. They keep your water hot and your home comfortable all day, every day. Plus, they need to last a long time. So, when you’re trying to work out what is the best temperature setting for central heating, you need to understand your boiler and its controls and settings.
General boiler info, Winter Advice, Troubleshooting
Waking up or coming home to find the hot water not working… is one of those things you could have done without today. Don’t let it ruin your day! We’re here to help you find out what causes hot water to stop working, and sort it out.
General Boiler info, Troubleshooting
If you’ve found water leaking from your boiler, the important thing is not to panic. We’ll help you diagnose the issue, and then show you what needs to be done. We have plenty of advice on boilers: how long they last, when they need replacing, and what you can do to make them last longer.
General Boiler Info
Just like you would check your car’s oil, brake pads and spark plugs to make sure it’s running safely and efficiently, it’s the perfect time to get your boiler checked over too. Read our top tips for your boiler’s summer maintenance here.
General Boiler Info
How much a new boiler costs will depends on a number of things, including the model, output and installation of the boiler. Read our advice here.
General Boiler Info
We understand that buying a new boiler is a big investment, and you need to be sure of getting it right. Your boiler is also the heart of your home so it’s vital you make the right choice when the time comes to replace it. Read our advice on how long a boiler lasts, how to maintain it and when to consider getting a new one.
General Boiler Info
A FGHR device that uses recycled heat when heating up the incoming cold water, lowering the amount of energy needed to warm the water up. Read more to find out how FGHR works and the benefits.
Troubleshooting
The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.
Gas safety
Currently, carbon monoxide detectors (CO alarms) for gas appliances are not required by law, in either privately owned, private rented or social housing.
Energy Saving Tips
Here are our suggestions for things we can all do around the home that won’t cost anything at all, but that could help to reduce our energy bills.
Winter advice
With serious flooding in some areas of the UK, boilers and central heating systems may not be your first consideration, yet when the floods subside there are some important things to consider to help keep you and your family safe.
Smart room thermostat
Baxi uSense is compatible with all combi boilers using the 230V switch live. Additional features, such as boiler fault diagnosis, are enabled when connected via OpenTherm.
The following Baxi boilers are OpenTherm compatible:
Baxi 800
Baxi 600
Baxi 400
Baxi 200
Boiler Servicing
There are a few simple maintenance jobs you can do yourself to keep it in tip top condition.
Boiler Servicing
Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Click to read more on the benefits of a boiler service.
Winter advice
Here are some steps you can take to protect your boiler and keep yourself, and your dear ones, warm and cosy, even during the coldest weather.
Warranty Information, General boiler info
Benchmark is a nationally recognised scheme that gives manufacturers and installers the responsibility for ensuring best practice for the installation, commissioning and servicing of domestic heating and hot water products, in accordance with the Building Regulations in England and Wales.
Troubleshooting
The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.
Troubleshooting
This five part basic checks video series can help you identify and repair basic boiler faults, problems, issues and error codes, helping you save time and money.
Click through to view our videos.
General boiler info
You can have your boiler installed safely in most rooms, or even the loft. There are, however a few things to consider.
Gas Safety
Under The Gas Safety (Installation and Use) Regulations 1998, owners of residential rented properties must arrange a gas safety check by a Gas Safe registered engineer for all pipework, appliances and flues in each of the properties which the landlord owns and provides for tenants to use.
General boiler info
The difference between an old non-condensing boiler and a new condensing model is the amount of useable heat it produces from the fuel it burns.
General boiler info
Back boilers (also known as back boiler units or BBUs) became popular in 1966 with the launch of the original Baxi Bermuda. A back boiler is a small, compact boiler fitted at the back of an open fireplace hearth. It sits behind a gas fire and provides hot water and central heating to the property.
Click to find out everything you need to know about replacing a back boiler.
Troubleshooting
If your boiler develops a problem, it will often display an error code on the control panel that will help you or your Gas Safe registered installer identify what went wrong.
Boiler servicing
Buying a new boiler is a big investment, and not taken lightly, whether it’s a distress purchase because your old boiler has broken down and can’t be repaired, you have extended your home and need a bigger boiler to cope with more radiators or you are concerned about your carbon footprint and want to be more energy efficient.
General boiler info
If you have a hot water storage cylinder, usually found in the airing cupboard, you should be able to run a bath and have a shower at the same time.
General boiler info
If you live in a property that has a boiler flue which cannot be inspected because it is hidden behind a wall or ceiling, you need to install an inspection hatch.
Troubleshooting
If you have cold spots at the top of your radiators, it means that there is trapped air that needs to be removed so your radiators will heat your room efficiently.
Follow our 8 simple steps on how to bleed a radiator.
General boiler info
To find out how old your boiler is, visit the official industry database Fill in details of your boiler and the dates when manufacture of that model began and ended will be displayed. You can search for all brands and models of boilers in this database. Or you can look at your boiler’s serial number. This can usually be found on the drop down panel on the front. The serial number has all the information needed for us to tell you when your boiler was manufactured. Contact us with the details.
Boiler servicing
Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.
Energy Saving Tips
As one of the biggest costs for householders in the UK, it is worth understanding how energy efficient your boiler is, and how much you could save if you replaced it with a new high efficiency model.
In April 2018, the Building Regulations changed again, requiring all new boilers to be at least ErP 92% efficient.
General boiler info
A system boiler, or sealed system, is a great option if you have more than one bathroom or your household has a high demand for hot water.
General boiler info
Heat only boilers are also known as conventional, traditional, open vent or regular boilers.
General boiler info
Combi, or combination boilers are the most popular type of domestic boiler sold in the UK.
Troubleshooting
If you have an older boiler (SEDBUK Band G), you should regularly check its pilot light, a small naked flame inside the boiler that you can see through a small hole covered by glass.
Gas Safety
Your carbon monoxide detector could save your and your family’s lives, so it is vital you install them in the best place to protect you from this poisonous gas. Here we answer some frequently asked questions about carbon monoxide (CO); what is carbon monoxide, what are the signs of carbon monoxide poisoning, where to place a carbon monoxide detector and more to keep you and your family safe.
General boiler info
The easiest way to find out which Baxi boiler you have is by looking at the instructions that came with it. It is always worth keeping these in a safe place, because they also include the Benchmark Checklist that your installer should have carried out when they fitted the boiler and also the boiler’s service history, which should be completed by the engineer when they carry out your annual service.
However, if you no longer have the instruction booklet you can find the serial number here.
General boiler info
We explain about the different types of boiler and their pros and cons, so you can make an informed decision on which type of boiler you need when you come to replace yours.
Boiler servicing, Warranty Information
The serial number can usually be found on the drop down panel on the front of the boiler. Some boilers have a tag underneath the boiler that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 0330 678 0917 with the name of your boiler and they will help you find it.
Gas Safety
Yes, our nationwide network of Baxi Customer Support engineers are employed by Baxi and are Gas Safe registered.
General boiler info, Boiler servicing, Warranty information
It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.
We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.
Troubleshooting
The normal operating water pressure for your boiler and central heating system is between 1.0 and 2.0 bar. If the pressure drops below 1.0 bar, you need to repressurise it. If the pressure goes above 3.0 bar, you will see water coming from the pressure relief valve (usually on an outside wall). You can reduce the pressure by bleeding a radiator or draining some water out of the system using a drain point, usually found underneath a radiator.
Troubleshooting
If your boiler pressure is too high, it could be because a radiator has been removed, for example, while decorating a room, and the system was over-filled when it was replaced. If the water pressure continues to be high after bleeding the radiators, please call your heating engineer, or Baxi Customer Support on 0330 678 0917 to check the system is safe to use.
General Boiler Info
The part of the Building Regulations that deals with central heating boilers is undergoing the biggest change since the introduction of condensing boilers in 2005. The change, commonly known as Boiler Plus, affects you when your old boiler is replaced, or you have a new boiler installed where there wasn’t one before.
The new law becomes effective on 6 April 2018 and applies to homes in England only.
Gas Safety
Carbon monoxide (CO) is a toxic gas produced by the incomplete combustion of fossil fuels including gas, oil, wood and coal used in boilers, engines, oil burners, gas fires, water heaters, gas ovens, solid fuel appliances and open fires.
It can occur when a gas appliance has been incorrectly fitted, badly repaired or poorly maintained. It can also occur if flues, chimneys or vents are blocked.
It is colourless, odourless and tasteless, so the best way to detect carbon monoxide is to fit a CO alarm.
Gas Safety
If you can smell gas you need to act quickly. We explain what you need to do to stay safe.
Gas safety
Currently, carbon monoxide detectors (CO alarms) for gas appliances are not required by law, in either privately owned, private rented or social housing.
Gas Safety
Under The Gas Safety (Installation and Use) Regulations 1998, owners of residential rented properties must arrange a gas safety check by a Gas Safe registered engineer for all pipework, appliances and flues in each of the properties which the landlord owns and provides for tenants to use.
Gas Safety
Your carbon monoxide detector could save your and your family’s lives, so it is vital you install them in the best place to protect you from this poisonous gas. Here we answer some frequently asked questions about carbon monoxide (CO); what is carbon monoxide, what are the signs of carbon monoxide poisoning, where to place a carbon monoxide detector and more to keep you and your family safe.
Gas Safety
Yes, our nationwide network of Baxi Customer Support engineers are employed by Baxi and are Gas Safe registered.
Gas Safety
Carbon monoxide (CO) is a toxic gas produced by the incomplete combustion of fossil fuels including gas, oil, wood and coal used in boilers, engines, oil burners, gas fires, water heaters, gas ovens, solid fuel appliances and open fires.
It can occur when a gas appliance has been incorrectly fitted, badly repaired or poorly maintained. It can also occur if flues, chimneys or vents are blocked.
It is colourless, odourless and tasteless, so the best way to detect carbon monoxide is to fit a CO alarm.
General Boiler info, Troubleshooting
Water dripping through the tundish of your Megaflo cylinder could be a sign the air gap needs recharging. Read here or watch our video to learn how.
Energy Saving Tips, General boiler info, Winter Advice
We explain how to turn down the flow temperature of your condensing combination (combi) boiler.
General Boiler Info
All boilers need to have the water pressure topped up from time to time. This is quite normal and a simple job you can do yourself.
General Boiler info
It is quite normal to need to top up the water pressure in your boiler occasionally. This is a simple job that you can do yourself.
General Boiler info, Future of home heating, Energy Saving Tips
The government boiler upgrade scheme was launched in April 2022. It will provide a boiler upgrade grant to help owners of domestic and small non-domestic properties in England or Wales with the upfront cost of installing low carbon heating systems, such as heat pumps. It will run from 2022 to 2025.
General Boiler info, Warranty Information
If your radiators have cold patches at the bottom and you need to bleed them more regularly or your central heating system is making more noise than usual, be sure to tell your Gas Safe registered heating engineer when they come to give your boiler its annual service.
General Boiler info, Warranty Information
If sludge is allowed to build up, it can result in blocked pipes, inefficient radiators and damaged parts in the boiler. The heat exchanger in a boiler consists of many narrow pipes which the water passes through to heat up. If the narrow pipes become restricted or blocked, the boiler will shut down to prevent it from overheating and getting even more damaged. If the boiler breaks down because of sludge in the system, the repair work is not covered by the boiler warranty and could lead to expensive repair bills.
General Boiler info, Warranty Information
Sludge, or magnetite, to give it its proper name, is a black substance in the central heating pipes made up of dissolved and rusted metal. It forms when the water in the system reacts with the metal in radiators and pipes.
Because sludge is heavier than water, it can settle in radiators and pipework and, if left to build up, it can damage the boiler and the system.
General Boiler info, Warranty Information
Replacing your boiler is a major investment and you want to know that you can rely on it to give you heating and hot water for many years. A boiler filter will catch dirt and debris in your central heating system before the water enters your boiler. This will help to prevent sludge building up in pipes and your radiators, which would make your boiler lose efficiency and could lead to higher energy bills.
General Boiler info, Warranty Information
The sludge that your magnetic filter collects will need to be removed because once the filter is filled up, it can’t catch any more debris. It will still allow the water to pass through, but will not collect any more sludge.
General Boiler info, Warranty Information
Your installer should fit a magnetic filter on the pipe that is returning the water to your boiler after it has been round the central heating system. This will prevent any debris that has been picked up on the circuit from entering your boiler. From 15th June 2022, having a magnetic filter fitted will be a requirement of the Building Regulations when you have a new boiler installed.
General Boiler info, Boiler Servicing, Warranty Information
Many boiler breakdowns that occur are due to sludge in the heating system. This ‘sludge’ (which is also known as magnetite) is caused by fragments of rust and other debris in the pipes that accumulates over time and, if left, can cause cold patches on your radiators, make your boiler work harder to heat your home and also can block or damage the components inside your boiler.
Boiler Servicing, General Boiler info, Warranty Information
Fitting a filter is considered Best Practice when installing a new boiler and is already included in a document called BS7593:2019 – Code of practice for the preparation, commissioning and maintenance of domestic central heating and cooling water systems.
General boiler info, Troubleshooting
Is it ok to turn off your boiler in summer? The short answer is: it depends on your home and your circumstances. Let’s go through those circumstances, and see which ones apply to you, so you know ‘what to do with your boiler in the summer?'
General boiler info, Winter Advice
As the nights draw in and the days get cooler, your boiler’s workload increases significantly. However, you may not have had your heating on for months. Ageing pipes, lower boiler pressure, grime building up inside your central heating system – there’s plenty that can happen over time that can reduce the effectiveness or even damage your boiler.
General boiler info, Winter Advice, Troubleshooting
Is your home not heating up as much as you’d like? Have you turned up your thermostat higher than you normally would? There’s a good chance that your radiators are not as efficient as they could be. A common cause of this is air trapped inside the heating system – and this is when to bleed your radiators.
General boiler info, Troubleshooting
When it comes to hot water temperature, everyone has a different preference on what’s ideal. Some like it hot, some like it too hot, and some like it warm. This guide is to help you set the right water temperature, and using BAXI boiler temperature settings to get your water temperature to your exact liking.
Even if you don’t have a BAXI boiler, we want to help you set your water temperature to what is most comfortable for you and everyone in your home. Most boilers have temperature controls, whether they’re combi boilers, heat-only boilers, or system boilers.
General boiler info, Troubleshooting
The most likely explanation for this is that there are bubbles of air trapped inside your radiator. Fortunately, this is the simplest issue to solve. All you need to do is bleed your radiator.
This can be done with only a radiator key, an old towel or rag or bucket to catch any water that comes out of the radiator. You can find out how to do this in our in-depth guide on how to bleed your radiator.
General boiler info, Winter Advice, Troubleshooting
Central heating systems are pretty complex. They keep your water hot and your home comfortable all day, every day. Plus, they need to last a long time. So, when you’re trying to work out what is the best temperature setting for central heating, you need to understand your boiler and its controls and settings.
General boiler info, Winter Advice, Troubleshooting
Waking up or coming home to find the hot water not working… is one of those things you could have done without today. Don’t let it ruin your day! We’re here to help you find out what causes hot water to stop working, and sort it out.
General Boiler info, Troubleshooting
If you’ve found water leaking from your boiler, the important thing is not to panic. We’ll help you diagnose the issue, and then show you what needs to be done. We have plenty of advice on boilers: how long they last, when they need replacing, and what you can do to make them last longer.
General Boiler Info
Just like you would check your car’s oil, brake pads and spark plugs to make sure it’s running safely and efficiently, it’s the perfect time to get your boiler checked over too. Read our top tips for your boiler’s summer maintenance here.
General Boiler Info
How much a new boiler costs will depends on a number of things, including the model, output and installation of the boiler. Read our advice here.
General Boiler Info
We understand that buying a new boiler is a big investment, and you need to be sure of getting it right. Your boiler is also the heart of your home so it’s vital you make the right choice when the time comes to replace it. Read our advice on how long a boiler lasts, how to maintain it and when to consider getting a new one.
General Boiler Info
A FGHR device that uses recycled heat when heating up the incoming cold water, lowering the amount of energy needed to warm the water up. Read more to find out how FGHR works and the benefits.
Warranty Information, General boiler info
Benchmark is a nationally recognised scheme that gives manufacturers and installers the responsibility for ensuring best practice for the installation, commissioning and servicing of domestic heating and hot water products, in accordance with the Building Regulations in England and Wales.
General boiler info
You can have your boiler installed safely in most rooms, or even the loft. There are, however a few things to consider.
General boiler info
The difference between an old non-condensing boiler and a new condensing model is the amount of useable heat it produces from the fuel it burns.
General boiler info
Back boilers (also known as back boiler units or BBUs) became popular in 1966 with the launch of the original Baxi Bermuda. A back boiler is a small, compact boiler fitted at the back of an open fireplace hearth. It sits behind a gas fire and provides hot water and central heating to the property.
Click to find out everything you need to know about replacing a back boiler.
General boiler info
If you have a hot water storage cylinder, usually found in the airing cupboard, you should be able to run a bath and have a shower at the same time.
General boiler info
If you live in a property that has a boiler flue which cannot be inspected because it is hidden behind a wall or ceiling, you need to install an inspection hatch.
General boiler info
To find out how old your boiler is, visit the official industry database Fill in details of your boiler and the dates when manufacture of that model began and ended will be displayed. You can search for all brands and models of boilers in this database. Or you can look at your boiler’s serial number. This can usually be found on the drop down panel on the front. The serial number has all the information needed for us to tell you when your boiler was manufactured. Contact us with the details.
General boiler info
A system boiler, or sealed system, is a great option if you have more than one bathroom or your household has a high demand for hot water.
General boiler info
Heat only boilers are also known as conventional, traditional, open vent or regular boilers.
General boiler info
Combi, or combination boilers are the most popular type of domestic boiler sold in the UK.
General boiler info
The easiest way to find out which Baxi boiler you have is by looking at the instructions that came with it. It is always worth keeping these in a safe place, because they also include the Benchmark Checklist that your installer should have carried out when they fitted the boiler and also the boiler’s service history, which should be completed by the engineer when they carry out your annual service.
However, if you no longer have the instruction booklet you can find the serial number here.
General boiler info
We explain about the different types of boiler and their pros and cons, so you can make an informed decision on which type of boiler you need when you come to replace yours.
General boiler info, Boiler servicing, Warranty information
It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.
We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.
General Boiler Info
The part of the Building Regulations that deals with central heating boilers is undergoing the biggest change since the introduction of condensing boilers in 2005. The change, commonly known as Boiler Plus, affects you when your old boiler is replaced, or you have a new boiler installed where there wasn’t one before.
The new law becomes effective on 6 April 2018 and applies to homes in England only.
Boiler servicing
Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.
Boiler Servicing
If you have a Domestic & General Maintenance & Support plan, please follow our 3 simple steps to book your boiler service online.
Boiler Servicing
You have booked for a Baxi engineer to visit. Now we give some tips on how to ensure the visit goes smoothly
Boiler Servicing, Warranty Information
The common signs of sludge in the central heating system are:
General Boiler info, Boiler Servicing, Warranty Information
Many boiler breakdowns that occur are due to sludge in the heating system. This ‘sludge’ (which is also known as magnetite) is caused by fragments of rust and other debris in the pipes that accumulates over time and, if left, can cause cold patches on your radiators, make your boiler work harder to heat your home and also can block or damage the components inside your boiler.
Boiler Servicing, General Boiler info, Warranty Information
Fitting a filter is considered Best Practice when installing a new boiler and is already included in a document called BS7593:2019 – Code of practice for the preparation, commissioning and maintenance of domestic central heating and cooling water systems.
Boiler Servicing, Warranty Information
The water in your central heating system flows from your boiler, where it is heated up, around all your radiators and then back to the boiler to be reheated and circulate again. A magnetic boiler filter is a small device that is installed into the pipework close to where the water goes back into your boiler.
Boiler Servicing
There are a few simple maintenance jobs you can do yourself to keep it in tip top condition.
Boiler Servicing
Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Click to read more on the benefits of a boiler service.
Boiler servicing
Buying a new boiler is a big investment, and not taken lightly, whether it’s a distress purchase because your old boiler has broken down and can’t be repaired, you have extended your home and need a bigger boiler to cope with more radiators or you are concerned about your carbon footprint and want to be more energy efficient.
Boiler servicing
Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.
Boiler servicing, Warranty Information
The serial number can usually be found on the drop down panel on the front of the boiler. Some boilers have a tag underneath the boiler that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 0330 678 0917 with the name of your boiler and they will help you find it.
General boiler info, Boiler servicing, Warranty information
It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.
We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.
Troubleshooting
If your boiler has shut down and is showing error code E133 or E28, then your condensate pipe may be frozen.
General Boiler info, Troubleshooting
Water dripping through the tundish of your Megaflo cylinder could be a sign the air gap needs recharging. Read here or watch our video to learn how.
Troubleshooting
If your boiler needs to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.
General boiler info, Troubleshooting
Is it ok to turn off your boiler in summer? The short answer is: it depends on your home and your circumstances. Let’s go through those circumstances, and see which ones apply to you, so you know ‘what to do with your boiler in the summer?'
General boiler info, Winter Advice, Troubleshooting
Is your home not heating up as much as you’d like? Have you turned up your thermostat higher than you normally would? There’s a good chance that your radiators are not as efficient as they could be. A common cause of this is air trapped inside the heating system – and this is when to bleed your radiators.
General boiler info, Troubleshooting
When it comes to hot water temperature, everyone has a different preference on what’s ideal. Some like it hot, some like it too hot, and some like it warm. This guide is to help you set the right water temperature, and using BAXI boiler temperature settings to get your water temperature to your exact liking.
Even if you don’t have a BAXI boiler, we want to help you set your water temperature to what is most comfortable for you and everyone in your home. Most boilers have temperature controls, whether they’re combi boilers, heat-only boilers, or system boilers.
General boiler info, Troubleshooting
The most likely explanation for this is that there are bubbles of air trapped inside your radiator. Fortunately, this is the simplest issue to solve. All you need to do is bleed your radiator.
This can be done with only a radiator key, an old towel or rag or bucket to catch any water that comes out of the radiator. You can find out how to do this in our in-depth guide on how to bleed your radiator.
General boiler info, Winter Advice, Troubleshooting
Central heating systems are pretty complex. They keep your water hot and your home comfortable all day, every day. Plus, they need to last a long time. So, when you’re trying to work out what is the best temperature setting for central heating, you need to understand your boiler and its controls and settings.
General boiler info, Winter Advice, Troubleshooting
Waking up or coming home to find the hot water not working… is one of those things you could have done without today. Don’t let it ruin your day! We’re here to help you find out what causes hot water to stop working, and sort it out.
General Boiler info, Troubleshooting
If you’ve found water leaking from your boiler, the important thing is not to panic. We’ll help you diagnose the issue, and then show you what needs to be done. We have plenty of advice on boilers: how long they last, when they need replacing, and what you can do to make them last longer.
Troubleshooting
The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.
Troubleshooting
The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.
Troubleshooting
This five part basic checks video series can help you identify and repair basic boiler faults, problems, issues and error codes, helping you save time and money.
Click through to view our videos.
Troubleshooting
If your boiler develops a problem, it will often display an error code on the control panel that will help you or your Gas Safe registered installer identify what went wrong.
Troubleshooting
If you have cold spots at the top of your radiators, it means that there is trapped air that needs to be removed so your radiators will heat your room efficiently.
Follow our 8 simple steps on how to bleed a radiator.
Troubleshooting
If you have an older boiler (SEDBUK Band G), you should regularly check its pilot light, a small naked flame inside the boiler that you can see through a small hole covered by glass.
Troubleshooting
The normal operating water pressure for your boiler and central heating system is between 1.0 and 2.0 bar. If the pressure drops below 1.0 bar, you need to repressurise it. If the pressure goes above 3.0 bar, you will see water coming from the pressure relief valve (usually on an outside wall). You can reduce the pressure by bleeding a radiator or draining some water out of the system using a drain point, usually found underneath a radiator.
Troubleshooting
If your boiler pressure is too high, it could be because a radiator has been removed, for example, while decorating a room, and the system was over-filled when it was replaced. If the water pressure continues to be high after bleeding the radiators, please call your heating engineer, or Baxi Customer Support on 0330 678 0917 to check the system is safe to use.
Warranty information
We explain how to register your boiler warranty, who is responsible for registering your boiler warranty and how to ensure your boiler warranty remains valid.
Warranty information
We explain how long is the warranty on a Baxi boiler, is a boiler warranty transferrable and how a Baxi boiler warranty works.
General Boiler info, Warranty Information
If your radiators have cold patches at the bottom and you need to bleed them more regularly or your central heating system is making more noise than usual, be sure to tell your Gas Safe registered heating engineer when they come to give your boiler its annual service.
General Boiler info, Warranty Information
If sludge is allowed to build up, it can result in blocked pipes, inefficient radiators and damaged parts in the boiler. The heat exchanger in a boiler consists of many narrow pipes which the water passes through to heat up. If the narrow pipes become restricted or blocked, the boiler will shut down to prevent it from overheating and getting even more damaged. If the boiler breaks down because of sludge in the system, the repair work is not covered by the boiler warranty and could lead to expensive repair bills.
Boiler Servicing, Warranty Information
The common signs of sludge in the central heating system are:
General Boiler info, Warranty Information
Sludge, or magnetite, to give it its proper name, is a black substance in the central heating pipes made up of dissolved and rusted metal. It forms when the water in the system reacts with the metal in radiators and pipes.
Because sludge is heavier than water, it can settle in radiators and pipework and, if left to build up, it can damage the boiler and the system.
General Boiler info, Warranty Information
Replacing your boiler is a major investment and you want to know that you can rely on it to give you heating and hot water for many years. A boiler filter will catch dirt and debris in your central heating system before the water enters your boiler. This will help to prevent sludge building up in pipes and your radiators, which would make your boiler lose efficiency and could lead to higher energy bills.
General Boiler info, Warranty Information
The sludge that your magnetic filter collects will need to be removed because once the filter is filled up, it can’t catch any more debris. It will still allow the water to pass through, but will not collect any more sludge.
General Boiler info, Warranty Information
Your installer should fit a magnetic filter on the pipe that is returning the water to your boiler after it has been round the central heating system. This will prevent any debris that has been picked up on the circuit from entering your boiler. From 15th June 2022, having a magnetic filter fitted will be a requirement of the Building Regulations when you have a new boiler installed.
General Boiler info, Boiler Servicing, Warranty Information
Many boiler breakdowns that occur are due to sludge in the heating system. This ‘sludge’ (which is also known as magnetite) is caused by fragments of rust and other debris in the pipes that accumulates over time and, if left, can cause cold patches on your radiators, make your boiler work harder to heat your home and also can block or damage the components inside your boiler.
Boiler Servicing, General Boiler info, Warranty Information
Fitting a filter is considered Best Practice when installing a new boiler and is already included in a document called BS7593:2019 – Code of practice for the preparation, commissioning and maintenance of domestic central heating and cooling water systems.
Boiler Servicing, Warranty Information
The water in your central heating system flows from your boiler, where it is heated up, around all your radiators and then back to the boiler to be reheated and circulate again. A magnetic boiler filter is a small device that is installed into the pipework close to where the water goes back into your boiler.
Warranty Information, General boiler info
Benchmark is a nationally recognised scheme that gives manufacturers and installers the responsibility for ensuring best practice for the installation, commissioning and servicing of domestic heating and hot water products, in accordance with the Building Regulations in England and Wales.
Boiler servicing, Warranty Information
The serial number can usually be found on the drop down panel on the front of the boiler. Some boilers have a tag underneath the boiler that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 0330 678 0917 with the name of your boiler and they will help you find it.
General boiler info, Boiler servicing, Warranty information
It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.
We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.
Winter Advice
If your boiler has stopped working in below zero temperatures, then it is likely your condensate pipe has frozen. Luckily it is quite simple to thaw and get your boiler up and running again without the need for an engineer. Follow our simple steps to get your boiler working again.
Energy Saving Tips, General boiler info, Winter Advice
We explain how to turn down the flow temperature of your condensing combination (combi) boiler.
Winter Advice, Energy Saving Tips
By following Baxi’s top tips for reducing energy consumption, it’s possible to protect pockets and make our homes more efficient in the process.
General boiler info, Winter Advice
As the nights draw in and the days get cooler, your boiler’s workload increases significantly. However, you may not have had your heating on for months. Ageing pipes, lower boiler pressure, grime building up inside your central heating system – there’s plenty that can happen over time that can reduce the effectiveness or even damage your boiler.
General boiler info, Winter Advice, Troubleshooting
Is your home not heating up as much as you’d like? Have you turned up your thermostat higher than you normally would? There’s a good chance that your radiators are not as efficient as they could be. A common cause of this is air trapped inside the heating system – and this is when to bleed your radiators.
General boiler info, Winter Advice, Troubleshooting
Central heating systems are pretty complex. They keep your water hot and your home comfortable all day, every day. Plus, they need to last a long time. So, when you’re trying to work out what is the best temperature setting for central heating, you need to understand your boiler and its controls and settings.
General boiler info, Winter Advice, Troubleshooting
Waking up or coming home to find the hot water not working… is one of those things you could have done without today. Don’t let it ruin your day! We’re here to help you find out what causes hot water to stop working, and sort it out.
Energy Saving Tips, General boiler info, Winter Advice
We explain how to turn down the flow temperature of your condensing combination (combi) boiler.
General Boiler info, Future of home heating, Energy Saving Tips
The government boiler upgrade scheme was launched in April 2022. It will provide a boiler upgrade grant to help owners of domestic and small non-domestic properties in England or Wales with the upfront cost of installing low carbon heating systems, such as heat pumps. It will run from 2022 to 2025.
Winter Advice, Energy Saving Tips
By following Baxi’s top tips for reducing energy consumption, it’s possible to protect pockets and make our homes more efficient in the process.
Energy Saving Tips
Here are our suggestions for things we can all do around the home that won’t cost anything at all, but that could help to reduce our energy bills.
Energy Saving Tips
As one of the biggest costs for householders in the UK, it is worth understanding how energy efficient your boiler is, and how much you could save if you replaced it with a new high efficiency model.
In April 2018, the Building Regulations changed again, requiring all new boilers to be at least ErP 92% efficient.
Future of Home heating
Check out if there are grants available in your area to help with the cost of installing air source heat pump
Future of Home heating
Is a heat pump right for me? Can a heat pump provide hot water? How efficient is a heat pump? We answer your questions about living with an air source heat pump
Future of Home heating
We explain the energy saving work needed before you fit an air source heat pump, where in your home you can have it and who can install it
Future of Home heating
What are heat pumps? We explain what an air source heat pump and a ground source heat pump is.
General Boiler info, Future of home heating, Energy Saving Tips
The government boiler upgrade scheme was launched in April 2022. It will provide a boiler upgrade grant to help owners of domestic and small non-domestic properties in England or Wales with the upfront cost of installing low carbon heating systems, such as heat pumps. It will run from 2022 to 2025.
Future of Home Heating
In order for the UK to meet the government’s target of net zero emissions by 2050, the way we heat our homes will have to change. The Government is planning to prevent the use of natural gas for heating new build homes in an effort to reduce carbon emissions.
Future of Home Heating
Yes, you can replace your existing gas boiler and no, you don’t have to do this before 2025. There is talk that only gas boilers that are ‘hydrogen ready’, i.e., they can be adapted easily and quickly to work on a 100% hydrogen supply
Future of Home Heating
Gas boilers will not be banned from 2025. However, from 2025 new build properties could be required to have low carbon heating, such as a heat pump,
Future of Home Heating
Our highly experienced team of experts is at the cutting edge of heat pump technology. Focused on quality, safety, and performance, we are helping to advance the use of heat pumps in residential and commercial buildings.
Find a Baxi installer near you for a free quote to install your new boiler.
