So, what’s right for you?
Combi Boiler
A Combi boiler is a single unit that can provide both central heating, as well as instant hot water, although the difference is that a Combi boiler uses no hot water tank. Combi-boilers are generally more compact units, and can be much more energy efficient than their contemporaries.
System Boiler
A system boiler deals central heating, but can provide hot water by storing it in a hot water cylinder tank. They handle high hot water demand; so are great for busy households, and they also tend to heat the home quickly and efficiently.
Heat-Only (Conventional) Boiler
As the name suggests, a heat-only boiler specifically deals with burning fuel to providing hot water and central heating to a household. They’re often compatible with old heating systems, and work well even on low pressure.