Hot water systems
How your home heats its water, and what we install and repair: combi boilers, unvented cylinders and immersion heaters.
Choose the right system
- Combi boiler: heats water on demand, no cylinder. Suits flats and smaller homes. Prices
- System or regular boiler with a cylinder: stores hot water for homes with more than one bathroom. System prices
- Unvented cylinder: mains-pressure hot water, no loft tank. Unvented cylinders
- Direct cylinder with immersion heaters: electric heating of stored hot water. Cylinder and immersion heater
Prices
Combi boilers from £2,049 fully installed. Unvented cylinders: indirect from £1,769, direct from £1,639, fully installed. Boiler price online · Cylinder price online.
Hot water problems
- No hot water: book a boiler diagnostic
- Cylinder problems or an immersion heater that has failed
- Low pressure or noisy unvented cylinder: see the guide
- Old cold water tanks: removal and cleaning
Sizing and running costs
A combi boiler heats water as you use it, so there is no stored hot water to run out of, but it supplies one or two outlets well at a time. A cylinder stores hot water, so several taps and showers can run together, which suits homes with more than one bathroom. A cylinder loses a little heat while it stands, so insulation and the controls matter. We look at your household, water pressure and available space at the free survey before recommending a system.
What we do not install
We do not install solar hot water or oil-fired systems, or gas fires and warm-air units.
Common questions
How much does a hot water system cost?
It depends on the system. Combi boilers start from £2,049, and cylinder prices are shown online after a few questions.
Do you replace hot water cylinders?
Yes, see hot water cylinder replacement.