Combi boilers
A combi heats water on demand straight from the mains, no hot water cylinder, no loft tank. The most common replacement in UK homes.
Get free quotesThe short version
- Heats water instantly, so there's no cylinder taking up cupboard space.
- Usually the quickest and cheapest swap if you already have a combi.
- Hot water flow depends on your mains pressure, worth checking before you buy.
- Running two showers at once can be a struggle on a smaller combi.
Who it suits
Flats, terraces and smaller-to-mid-size homes with one bathroom and decent mains pressure. A Gas Safe installer will size the output to your home during the survey.
Advertising only: BoilerMatch UK is an advertising and introduction service. We are not Gas Safe registered, we do not install boilers, and we do not advise on grants or funding entitlement. Only a Gas Safe installer who has surveyed your home can confirm what you need and what it costs.