Condensing and Non-Condensing Boilers: Everything You Need to Know

//Condensing and Non-Condensing Boilers: Everything You Need to Know

Condensing and Non-Condensing Boilers: Everything You Need to Know

Selecting a new boiler can be challenging. As well as choosing between a combi, system or conventional model, you’ll also be considering condensing and non-condensing boilers. If you’ve never bought a new boiler before, it’s easy to get overwhelmed by all your options.

If you’re uncertain about the difference between condensing and non-condensing boilers, you’re in the right place. Keep reading for some help on picking a boiler.

How are condensing and non-condensing boilers different?

The big difference between condensing and non-condensing boilers is their performance. Non-condensing boilers usually have an efficiency between 55-78%, depending on their age. Condensing boilers, on the other hand, can have up to 92% efficiency.

Why are condensing boilers more efficient?

Condensing boilers are typically more efficient than non-condensing boilers as they capture and reuse wasted heat. They use the heat in flue gas to pre-heat the cold water running into the boiler. This boosts efficiency and reduces waste, meaning that you’ll spend less and get more heat.

What kind of boiler should I get?

The UK government says that when you get a new boiler it should be condensing unless there is a good reason why not. This is because, as well as being more efficient, condensing boilers are also more environmentally friendly and safer than non-condensing boilers.

If you want to get a new gas boiler, it’s important to get a new boiler survey. This involves asking a boiler engineer to look at your existing system and recommend the best replacement boilers. Your engineer will tell you whether you can fit a condensing boiler and help you get permission for a non-condensing one.

Be sure to use an engineer who is on the Gas Safe register, so their work is safe and complies with building regulations.

If you want to find a pro to give you recommendations and advice, fill in our online form. We’ll find you up to 4 Gas Safe registered boiler engineers in your area.