Many homes (approximately 15%) aren’t connected to the national gas grid and may resort to alternative heating options like wood-burning stoves. However, for the majority connected to the gas network, gas boilers are the primary choice. There are three principal kinds of gas boilers: combi boilers (ideal for smaller households), heat-only boilers (suitable for homes requiring simultaneous hot water in multiple rooms), and system boilers (optimal for larger homes with low water pressure).

The size of the boiler is crucial, not just in terms of its physical dimensions to fit the available space, but also its capacity measured in kilowatts (kW). The general guideline is: the greater the heating and hot water demand, the higher the kW boiler you’ll require. A 25-30kW boiler will be perfect for the average UK home.

Investing in a new boiler can be costly, and so are any subsequent repairs. Therefore, it’s imperative to choose a boiler known for its reliability and good warranty period. We a premium partner with Viessmann for this very reason, they provide up to a 12 year warranty.