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No hidden costs
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Approved for 2 years running
Next day install
Boilers fitted fast
Fixed price
No hidden costs
Which? Trusted Trader
Approved for 2 years
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.
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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
Thousands of happy customers
Watch real stories from homeowners across the UK
who upgraded with iHeat.
Contacted Monday, fitted Wednesday - home was nice and toasty when I got back.
Julie
Booked within 24 hours - able to book fitting of new boiler quickly.
Kelly
Booked install just two days ahead - right before Christmas! Installation was smooth.
Adrian
Pricing a lot cheaper than competitors - installation completed in less than 2 days from order.
Mr L.
My boiler broke before Christmas - iHeat fitted my new boiler within 2 days of application.
Montybeau
Great service from website to installation - helped choose the correct product.
Lynton
100% recommend iHeat - very easy and straightforward process.
Emily
Very competitive price - staff bent over backwards to help solve issues.
Andy
Why choose iHeat
Fixed online quotes. Fast installations.
Trusted by homeowners across the UK.
Deluxe Boiler Brands
We install only top-rated boilers from trusted British and European brands.
Premium After Care
Dedicated support team for any post-installation questions or issues.
5-Star Reviews
Over 10,000 5-star reviews — proof of our reliable service and expertise.
Interest Free
Spread the cost with flexible 0% APR finance options.
Fixed Price Quote
Get a fixed quote in 60 seconds, installs as soon as next day.
Expert Local Engineers
Gas Safe registered experts serving homes across the UK.
Trusted and accredited across the UK
Which? Trusted Trader
Independently endorsed for exceptional quality and trustworthy service.
5★ Trustpilot Rated
Over 10,000 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.
Only the best A-rated energy efficient boilers
Boilers that cut your monthly bills.
Swipe to see more
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)
£1,879
£1,979
or, monthly from
£39
Best value
Alpha Etec NX
11-Year Warranty
Ideal for small and medium homes
Stainless steel heat exchanger
Compact stylish design
Fixed price (inc. VAT)
£2,049
or, monthly from
£43
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)
£2,299
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)
£2,249
£2,299
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)
£2,389
or, monthly from
£50
Modern but affordable
Viessmann 050
10-Year Warranty
10 year warranty
Compact dimensions & quiet
Fits into kitchen cupboards
Fixed price (inc. VAT)
£2,449
or, monthly from
£51
Brains behind the boilers
Meet the senior management team that handles your installation from start to finish.
Ste
Operations Director
Olivia
Customer Services Manager
Barry
Procurement Manager
Alex
Aftercare Manager
600+
engineers across the UK
Which? Trusted Traders
Gas Safe certified
Fully insured
Local experts
Everything you need to know
Find quick answers to our most common questions.
Boiler help & expert guides
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Advice
Worcester Bosch Greenstar 4000 System Boiler Review
Today we will review the Worcester Bosch Greenstar 4000 System Boiler, and whether this system boile...
Gas Safe Engineer
11 February 2026
Reviews
What is a Gas Supply Pipe?
A gas supply pipe is an essential part of any property with a gas boiler. Its main job is to carry n...
Gas Safe Engineer
10 February 2026
Guides
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