a boxt engineer installing a new boiler
a boxt engineer installing a new boiler
a boxt engineer installing a new boiler
a new boiler installed in a kitchen
a new boiler installed in a kitchen
a new boiler installed in a kitchen
a new boiler installed on a blue background
a new boiler installed on a blue background
a new boiler installed on a blue background

New boilers

New boiler installation from only £1,745

Or pay monthly from £25 a month with no deposit, and save up to £45 a month on your energy bills*


BOXT Price Promise
0% finance available
Buy Now Pay Later

Next day boiler replacement

When your heating and hot water stop working, we know that the last thing you want is to be waiting for days before an engineer can even come and inspect the problem. That's why at BOXT we offer next day installation when you order your new boiler before 4pm, so your heating will be back up and running before you can say "wow, that was easy!".

Plus, with a 12 month workmanship guarantee, and up to 10 year manufacturer-backed warranty, you can relax knowing that in the unlikely event that something isn't quite right, you're completely covered and we'll work with you to make it right. 

Need a boiler replacement?

Worcester Bosch Greenstar 4000

The UK's best-selling boiler, with a new & improved design

Our most popular model and one of the quietest combi boilers available, the Greenstar 4000 is perfect for small and medium sized homes.

Get a quote

Navien NCB 300

Quality performance, without the price tag

Featuring a smart digital display so you can easily control your heating and hot water, plus a stainless steel heat exchanger to provide long-term efficiency.

Get a quote

Vaillant ecoFIT Pure

Flexibility to fit almost anywhere

This compact model fits seamlessly into your home, while offering plenty of power with quality components to ensure long-lasting reliability and efficiency.

Get a quote

Worcester Bosch Greenstar 8000

Super powerful, super efficient

One of the most powerful wall-hung boilers on the market, with amazing performance for a range of home sizes whilst working intelligently and efficiently.

Get a quote

How BOXT works

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Discover

Answer some questions about your home and get a new boiler quote in minutes.

Choose

Compare brands, models and sizes to choose the right solution for your home. Pay upfront or in instalments.

Install

Order online by 4pm to have your replacement boiler installed next day by a BOXT accredited engineer.

Maintain

Download the BOXT app to keep track of your installation and view all your important documents.

Benefits of a new boiler

Even if your current boiler is still working, it can be worth investing in a new boiler before you're stuck without heating or hot water when you need it, especially if your boiler is more than 15 years old.

A key reason it's worth upgrading older boilers is because modern boilers are more energy efficient than old ones. In fact, depending on how old your existing boiler is and the type of home you live in, you could save almost £500 a year on your energy bills with a new, A-rated boiler! Plus with the addition of smart technology, like the Google Nest Learning Thermostat, it's simple to build a heating schedule and control the temperature in your home from anywhere. In fact, this extra efficiency can help save up to an extra 10% on your heating bills.

Flexible ways to pay for your new boiler

Spread the entire cost on selected boilers with up to 48 payments at 0%

Finance from 12-120 months

Subscribe to a BOXT Life boiler package from £32 a month

Subscribe for 120 months

All major credit and debit cards accepted so you can pay in full today

Pay today

Get your fixed price

Comparing boiler replacement prices?

Save yourself the hassle of shopping around and comparing prices. If you can find a better deal for fixed-price installation elsewhere, we’ll either beat it or give you a £50 Amazon voucher. No strings attached, no questions asked.

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New boilers from leading brands

We’re creatures of habit, and that’s a-ok. BOXT stocks energy-efficient boilers from all the leading brands, meaning you can get a replacement you know you’ll love.

The home heating industry can be complicated, but with BOXT, it doesn’t have to be. Explore boilers from trusted brands to find your perfect replacement.

New boiler FAQs

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Ready to find your perfect new boiler?