Boiler installations made easy.
Get a fixed quote in seconds,
no hidden costs, 0% APR finance.
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
We help homeowners access fast, reliable home-energy solutions.
Get a fixed price
Answer a few quick questions about your home and current boiler.
No signup needed
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.
Swipe to see more
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)
£2,145
or, monthly from
£45
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)
£2,245
£2,295
or, monthly from
£47
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)
£2,445
or, monthly from
£51
Why choose us for your new boiler?
We provide more than just a boiler. Compare our fixed-price service with standard local installers to see the difference.
Pricing:
Warranty:
Engineers:
Finance:
Installation:
Hidden Fees:
Fixed Price Guarantee
Up to 10-Year Warranty
Vetted Gas Safe Experts
0% APR & No Deposit
Next-Day Available
Everything Included
Other Installers
Estimates that often change
Standard 2-5 year coverage
Varies by subcontractor
High interest or cash only
1-2 week waiting times
Extra charges for parts
Pricing:
Fixed Price Guarantee
Estimates that often change
Warranty:
Up to 10-Year Warranty
Standard 2-5 year coverage
Engineers:
Vetted Gas Safe Experts
Varies by subcontractor
Finance:
0% APR & No Deposit
High interest or cash only
Installation:
Next-Day Available
1-2 week waiting times
Hidden Fees:
Everything Included
Extra charges for parts
Flexible Ways to Pay
0% Interest-Free Credit
Spread the cost without extra fees
Buy Now, Pay Later
Nothing to pay for 12 months
Low Monthly Payments
Small installments for up to 10 years
Peace of Mind Guaranteed
We're committed to providing you with the highest standards of service, backed by industry-leading certifications and thousands of satisfied customers.
Which? Trusted Trader
Independently endorsed for exceptional quality and trustworthy service.
5★ Trustpilot Rated
Over 11,000 verified 5-star reviews from real customers across the UK.
FCA Authorised
Approved credit broker offering secure, transparent finance options.
Gas Safe Engineers
Fully qualified and legally certified for safe boiler installations.
Professional service from
engineers you can trust
Gas Safe registered experts, installing nationwide.
Our vetted engineers ensure a clean, safe, and perfect setup for your home.
Local experts
Fully insured
Background checked
Clean & Tidy guarantee
Thousands of happy customers
Watch real stories from homeowners across the UK
who upgraded with iHeat.
My boiler broke before Christmas - iHeat fitted my new boiler within 2 days of application.
Montybeau
Booked next day installation - kept updated throughout the process.
Samuel
Very professional service - helpful advice on the phone, polite and informative.
Anne
Great service from start to finish - heating engineer was fantastic - worked quickly and tidily.
Gavin
100% recommend iHeat - very easy and straightforward process.
Emily
Fantastic from start to finish - online ordering was straightforward and quick.
Gareth
Contacted Monday, fitted Wednesday - home was nice and toasty when I got back.
Julie
Booked install just two days ahead - right before Christmas! Installation was smooth.
Adrian
Everything you need to know
Find quick answers to our most common questions.
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