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Which? Trusted Trader
for 2 years running
Which? Trusted Trader
for 2 years running
Working with the best
Recognised by the biggest names in home services.
A clear, simple process
Your boiler journey in 3 simple steps
Get a fixed price
Answer a few quick questions about your home and current boiler.
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Pick a package
Choose from a range of top-rated boilers that fit your home and budget.
0% APR finance available
Choose install date
Pick your date, we can install as soon as next day (order before 3 pm).
Next-day installation
Only the best A-rated energy efficient boilers
Boilers that cut your monthly bills.
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Budget
Compact
Navien NCB 300
5-Year Warranty
Compact and space-saving design
Stainless steel heat exchanger
Energy-saving performance
Fixed price (inc. VAT)
£1,745
£1,945
or, monthly from
£36
Best value
Alpha Etec NX
10-Year Warranty
Ideal for small and medium homes
Stainless steel heat exchanger
Compact stylish design
Fixed price (inc. VAT)
£2,195
or, monthly from
£46
Suitable for kitchen cupboards
Glow-worm Compact
5-Year Warranty
Hand-built in Derbyshire
Glow-worm's compact boiler
5 year warranty
Fixed price (inc. VAT)
£2,095
£2,195
or, monthly from
£44
Budget boiler
Compact
Worcester Greenstar 1000
5-Year Warranty
Designed for cupboards
Great design at a lower price
Innovative 'QuickTap' water saving
Fixed price (inc. VAT)
£2,295
or, monthly from
£48
Which? Best Buy Boiler
Best seller
Worcester Greenstar 2000
7-Year Warranty
Worcester's quietest combi boiler
Big brand budget boiler
New sleek compact design
Fixed price (inc. VAT)
£2,345
£2,395
or, monthly from
£49
Modern new design
Worcester Greenstar 4000
10-Year Warranty
Our most popular boiler
Innovative 'QuickTap' water saving
Powerful to meet your needs
Fixed price (inc. VAT)
£2,495
or, monthly from
£52
The UK's trusted choice for home heating
Which? Trusted Trader
Independently endorsed for outstanding quality, trusted service, and expert workmanship you can depend on.
5 Star Trustpilot Rated
Over 10,000 verified 5-star reviews from happy customers praising our reliable and friendly service.
Gas Safe Engineers
Fully qualified and legally certified for safe, compliant boiler installations and servicing every time.
FCA Authorised
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Everything you need to know
Find quick answers to our most common questions.
Boiler help & expert guides
Oil Fired Boiler
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Gas Safe Engineer
10 September 2026
Guides
Navien Combi Boiler Costs
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10 September 2026
Guides
What Is A System Boiler?
A system boiler provides heating and stores hot water in a separate cylinder.
Gas Safe Engineer
10 September 2026
Advice
Checking Your Boiler When Buying a New Home
Buying a new home is a massive investment and you’ll likely consider a number of different factors w...
Gas Safe Engineer
10 September 2026
Advice
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