Baxi Indirect Cylinder
The Baxi Indirect cylinder is perfect for use with Baxi system or heat only boilers.
It delivers excellent water pressure for homes with higher demand for hot water, providing fast-filling baths and invigorating showers. The clever 'coil-in-coil' heat exchange inside means the water heats up extremely quickly, and the insulation means it is extremely energy efficient.
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50mm thick cylinder insulation to keep your water hotter for longer
High performance 'coil-in-coil' heat exchanger for exceptionally fast recovery times
High grade duplex stainless steel for strength and quality
76 litres per minute of hot water for quick-filling baths and powerful showers
25-year warranty on the inner tank (two-year warranty on all other components)
- Internal expansion with floating baffle
- Insulated T and P valve
- 50mm thick cylinder insulation
- High grade duplex stainless steel
- 76 litres per minute of hot water
- 25-year warranty for complete peace of mind
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| Units | 125i | 145i | 170i | 210i | 250i | 300i | |
| Part number | 7798178 | 7798179 | 7798180 | 7798181 | 7798182 | 7798183 | |
| Nominal capacity | 125 | 145 | 170 | 210 | 250 | 300 | |
| Coil rating (@15l/min at 80 | kW | 11.6 | 11.8 | 12.5 | 12.8 | 13 | 11.8 |
| Heat up times (@15l/min at 80 | mins | 31 | 35 | 40 | 45 | 54 | 65 |
| Heat loss | Kwh/24h | 1.28 | 1.39 | 1.6 | 1.82 | 1.84 | 2.18 |
| ErP rating | C | C | C | C | C | C | |
| Mix water delivery to 40°C | litres | 176 | 197 | 233 | 258 | 320 | 386 |
| Max mains pressure | bar | 16 | |||||
| Max design pressure | bar | 8 | |||||
| Operating pressure | bar | 3 | |||||
| Max primary pressure | bar | 10 | |||||
| Expansion relief valve setting | bar | 8 | |||||
| T&P valve setting | °C/bar |
90/10 | |||||
| Immersion heater electrical rating | kW @240V | 3 | 3 | 3 | 3 | 3 | 3 |
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Discover more
- How to reset a Baxi boiler
- How do I bleed a radiator?
- How to recharge the air gap on a Megaflo unvented cylinder
- How old is my boiler?
- What is central heating sludge?
Read how to reset your boiler, whether it has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.
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 simple steps for bleeding your radiators.
Read full FAQIf you've noticed that water is dripping from the safety pipe outside or through the tundish on the outside of your cylinder, this is an indication that the air gap in your cylinder needs recharging. Watch our video to find out how you can easily fix this yourself, without calling a heating engineer.
We show you how to find out how old your boiler is from its serial number.
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, and, if left to build up, it can damage your boiler and the system.
Read full FAQ