How does a combi boiler compare to other boilers?
Combi boilers are a type of condensing boiler. In reality, almost all condensing boilers you can get in the UK these days are combi boilers, as they provide hot water for both your taps and your central heating.
Conventional boilers are an older type that take up much more space than combi boilers, as they rely on big water tanks. They’re also less energy efficient than combi boilers. On the other hand, a conventional boiler means you have a good supply of water ready at all times – great for large homes, or if you often need to use a lot of water at once.
System boilers are much the same. They use a water tank so they take up more space, and aren’t as efficient, but do have fewer moving parts so they’re less susceptible to breakdowns. And again, system boilers give you a supply of hot water ready at all times.