Your guide to boilers.

From combi boilers to servicing, we'll help you find the answer to your boiler questions.

What type of new boiler should I choose?

Understand the advantages and disadvantages of the three main types of boilers and find the one that's right for your home.

Combi boiler

Combi boilers.

These are great if you live in a smaller home. They don’t need a separate hot water cylinder or cold water storage tank, so they could easily fit into a cupboard and don’t take up any of your valuable space under the stairs or in the loft (for example).

More on combi boilers.

Regular boiler

Regular boilers.

If you often use hot water around your home, then a regular - or “condensing” - boiler is probably best for you. They can take up more room than a combi as they often come with a cold water tank as a kind of back up but you’ll have a plentiful supply of water ready to be heated regardless of water pressure or any other issues.

More on regular boilers.

System boiler

System boilers.

Does your home have more than one bathroom? Then a system boiler is a good choice. They’re like a condensing boiler but with a large tank for storing extra hot water. Again, they take up more room than a combi boiler, but you have a constant supply throughout your home when you need it.

More on system boilers.

How well is your boiler running?

We all know when a boiler is running well, mostly due to how warm the house is and we've not just stepped into a shower that could freeze us in seconds.

Are your radiators not getting hot enough? They could have air trapped in them. The best way to deal with it is to bleed the radiators. Find out more on how to bleed the radiators easily in this helpful guide.

Of course, boilers do sometimes need replacing. While boilers generally have a lifespan of around 10-15 years, there comes a time when they need to be replaced. It's important to recognise the signs that say your boiler may have problems, like:

  • Leaking water.

  • Making strange noises.

  • Pressure dropping.

  • The pressure is too high.

  • Overheating.

If your boiler is doing any of these things, we've put together a handy guide to show you your options and whether you need to replace your boiler with a new one.

Remember, a well-maintained boiler not only gives you a comfortable living environment but also helps with energy efficiency and cost savings in the long run. By addressing any signs of boiler problems quickly, you can avoid major disruptions and be sure your home will remain warm throughout the colder months.

Our guide to boiler problems

We're Which? Trusted Traders.

E.ON's boiler installations are a Which? approved service.

E.ON have the national accreditations for air source heat pump installation services in the UK, giving you the reassurance you need when picking a sustainable solution for your home.

Get covered by HomeServe.

We've partnered with HomeServe to offer you a range of covers for your home, including boiler and central heating cover. See how you can protect your home and find the right cover for you. T&Cs apply.

What can HomeServe cover

Here are some of our boiler FAQs.

Read more about boilers.

Is your boiler ready for winter?

We've put together a helpful guide to help you stay a step ahead.