BASI guide to a combi boiler
Combi boilers are now the most popular boiler system installed in homes across the UK, replacing conventional or heat-only systems that require a cylinder and a tank.
What makes combi boilers so suited to our homes?
The name combination comes from the ability to heat your home and your water supply from one place. A modern combi boiler is a high-efficiency water heater and central heating boiler in one. It takes cold water from your mains supply, heats it within the boiler, and distributes it throughout the house on demand.
Pros
- Compact and simple to install, with no need for a hot water tank or cylinder
- Cost-effective and energy efficient, as they only heat the hot water you use
- Hot water straight from the mains, so no planning ahead or running out unexpectedly
- Good, strong pressure as water comes straight from the mains
- All combi boilers we install are from leading manufacturers with up to a 10 year warranty
Cons
- They can struggle to run two hot water sources at once, an issue for large households with multiple bathrooms
- They contain moving parts and can be more prone to breakdowns, though an annual service combats this
- An existing power shower may be made redundant unless professionally adjusted
If you would like help deciding whether a combi boiler suits your home, read our guide on combi and system boilers or speak to our team.