Types of boiler

The type of boiler you need depends on lots of different things. The size of your home and how many radiators you have will both make a difference, for example.

Below you'll find information on the main types of boiler available, as well as a few things you'll need to consider about each.

If you need more help, get in touch and we'll help you choose the best boiler for your needs.

Combi boilers

Combination boilers – or combi boilers – are the most popular type. They provide unlimited heat and hot water on demand.

Combi boilers take up less space than conventional boilers as there's no need for water tanks or cylinders.

However, the water pressure won't be as good if you run hot water from more than one tap at a time.

Conventional boilers

Conventional boilers – also known as open vent or regular boilers – have a cylinder (often in a cupboard) and a tank (usually in a loft). You'll need to make sure you've got space for these.

With these boilers, you'll be able to run hot water from more than one tap at a time. That said, the amount of hot water is limited. Once it has run out, you'll have to wait for it to reheat.

System boilers

System boilers work in a similar way to conventional boilers. They don't need a feed and expansion tank in the loft, though.

Condensing boilers

All new gas combi and conventional boilers have to be condensing – apart from in exceptional circumstances.

Condensing boilers are very energy efficient because they capture and reuse some of the heat which would otherwise escape from the flue. This will save you money on your heating bills.