If you’ve started researching new boilers, you’ve almost certainly come across efficiency ratings and wondered what they actually mean in practice.

For most homeowners, a new boiler is one of the larger domestic expenses they’ll face in any given year.

With so many boiler types, brands and models available, it’s easy to feel overwhelmed when the time comes to replace your heating system.

Choosing a new boiler is one of the most important decisions you’ll make for your home’s comfort and running costs.