Your Guide to Condensing and Non-Condensing Boilers

Choosing a new boiler can be tricky. As well as choosing between a combi, system or conventional model, you’ll also be looking at condensing and non-condensing boilers. If you haven’t bought a new boiler before, it can be easy to get overwhelmed by all your options.

If you’re confused about the difference between condensing and non-condensing boilers, we’re here to help. Just take a look at this simple guide we’ve put together.

What’s the difference between condensing and non-condensing boilers?

The main difference between condensing and non-condensing boilers is their efficiency. Non-condensing boilers usually have an efficiency of between 55-78%, depending on how old they are. Condensing boilers, on the other hand, can reach up to 92% efficiency.

Why are condensing boilers usually more efficient?

Condensing boilers are usually more efficient than non-condensing boilers because they capture waste heat and reuse it. They use the heat in flue gas to preheat the cold water feeding into the boiler. This reduces waste and boosts efficiency, meaning that you’ll spend less on fuel and get more heat.

What type of boiler should I get?

The UK government says that all new boiler installations should be condensing unless there is a good reason why not. This is because, as well as being more efficient, condensing boilers also produce fewer carbon emissions and are safer than non-condensing boilers.

If you’re thinking about installing a new gas boiler, it’s a good idea to get a new boiler survey. This involves asking a boiler engineer to take a look at your current system and recommend the best boilers to replace it. Your engineer will tell you whether you’re not able to fit a condensing boiler and help you get permission to install a non-condensing one.

Make sure that you use an engineer who is on the Gas Safe register, so you know their work is legal and safe.

If you want to find a professional to give you some advice or install a new boiler, complete our online form. We’ll connect you with up to 4 Gas Safe registered boiler engineers in your area.

Evy Coe

Evy works for Quotatis as a Content Marketing Executive. She loves to write about interior design and help homeowners with their DIY projects.

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