When to Buy a New Boiler in 2026?

It’s pretty common knowledge that it’s usually sensible to buy a new boiler in the summer when the demand is lower, but is there a perfect time to invest?

It might seem obvious, but there are lots of advantages to holding off, so before you jump in headfirst and chuck out that faithful old combi, it’s worth considering your timing before you make your move. It turns out that there are actually more favourable times of the year in terms of price, model availability and more.

This blog will discuss the best and worst times to buy a new boiler, the signs you need to replace it, and the best boilers to buy in 2026.

The Best Time to Buy a Boiler

As the temperature begins to drop around late October or early November, installation companies see a surge in queries. This means that your installation may take longer, or you might not be able to get the model you wanted. Although this rarely happens here at WarmZilla, it’s a trend we see industry-wide.

The Worst Time to Buy a Boiler

If your boiler can survive the winter, we recommend waiting until the summer months to install your new one, when you aren’t reliant on it for heating. It gives you plenty of time to look around and ensure that WarmZilla is the cheapest option available. And if it’s not the most affordable, which is very unlikely, we will price match the quote and give you £50 off your order! Read more on our best price guarantee .

And if your boiler needs servicing, we also recommend having the service done in the summer months, so your boiler is in good shape for when you need it most!

Why Replace/Service Your Boiler in the Summer?

We know that boilers are not as exciting to buy in the summer as a new BBQ or outdoor pizza oven! But boilers are best bought in the summer for sure, and here are the reasons why:

• Heating engineers aren’t too occupied – As you can imagine, winter is the busiest month for heating engineers. They’re busy with breakdowns, heating emergencies and frozen condensate pipes. Booking in the summer means you can choose a time that suits you.
• Ready for the winter – Replacing/servicing your boiler in the summer means it will be working efficiently when you need it most.
• You won’t be cold! – Depending on the job, some installations take 1–3 days. Getting it done in summer means you won’t have to endure the cold or stay elsewhere.
• More time to shop around – If your boiler breaks down in the winter, you’ll be in a rush to replace it. Buying in the summer gives you time to compare options. Use our boiler comparison tool to help you choose.

Signs That Your Boiler Needs Replacing

Your boiler could last between 10-15 years, or even longer if well maintained. However, there are signs it might be time for a replacement:

• An unexplained rise in energy bills – Boilers lose efficiency over time. If your bills are increasing unexpectedly, it could be time for a new one.
• Odd noises – Banging, whistling, popping, or hissing sounds could indicate internal issues.
• Leaks – While not always a sign of replacement, leaks should be checked immediately by a heating engineer.
• Frequent breakdowns – If repairs are becoming costly, replacing your boiler may be a more economical choice.
• It doesn’t heat your home properly – If your radiators aren’t heating well or you struggle to get hot water, it could be failing.
• Finding replacement parts is difficult – If your boiler is outdated and parts are rare, replacing it could save you hassle in the long run.

Boilers on Finance

For most of us, buying a new boiler is a necessity rather than a choice. As one of the more expensive home appliances, not everyone has thousands saved up. That’s why boiler finance is a great option.

Boiler Finance Monthly Repayments

Nobody wants to spend money on a boiler, but our boiler finance plans can help spread the cost. We also offer 0% interest-free credit on selected models.

The Best Boilers to Buy in 2026

At WarmZilla, our mission is to give you all the help and support you’ll need to find the best boiler for your home at the best price.

To sum up, the best combi boilers on the market in 2026 are:

• Worcester Bosch Greenstar 4000
• Ideal Logic Max
• Vaillant EcoTec Pro

The best system boilers on the market in 2026 are:

• Worcester Bosch 8000 Style
• Ideal Logic Plus
• Vaillant EcoTec Plus

The best regular boilers on the market in 2026 are:

• Worcester Bosch Greenstar Ri
• Ideal Logic Heat
• Vaillant EcoFit Pure

FAQs

How much does a new boiler cost in 2026?

The cost depends on the type, brand, and installation complexity. On average, prices range from £1,500 to £3,500. At WarmZilla, we offer transparent pricing with no hidden costs, and we will price match and give you £50 off if you find a better deal. Check out our best price guarantee for more details.

What is the most energy-efficient boiler available?

Energy-efficient boilers help reduce energy bills. Some of the best models in 2026 include the Worcester Bosch Greenstar 4000, Vaillant EcoTec Plus, and Ideal Logic Max. These models have A-rated efficiency and are compatible with smart thermostats for better control.

Why replace/service your boiler in the summer?

Heating engineers are less busy in summer, giving you more time to shop around and schedule a convenient installation.

What are the signs that I need a new boiler?

• An unexplained rise in energy bills
• Your boiler makes odd noises
• Your boiler is constantly leaking
• Frequent boiler breakdowns
• The boiler doesn’t heat your home
 
• Difficulties finding replacement parts for your boiler