Boiler Installation in Greater London from £1,979 inc. VAT
Upgrade your heating without the typical capital city mark-ups. WarmZilla delivers A-rated, energy-efficient boilers across Greater London, taking care of ULEZ, parking, and strict emissions compliance at one transparent fixed price.
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BackInstalling the UK's most trusted, A-rated boiler brands
Heating London Homes, Without the Hassle.
Getting a reliable heating engineer in the capital shouldn't be a lottery. We've changed the game.
Matthew Powell
Founder & Gas Safe Engineer"Getting a tradesperson to turn up in London shouldn't be a headache. We established WarmZilla to bring reliability back to the heating industry. Our local Gas Safe engineers are fully vetted, prompt, and equipped to handle the unique demands of London properties—from tight parking to complex apartment pipework."
Guaranteed Arrival Times
No more waiting around all day. Our central dispatch team tracks our local London engineers to ensure a 98% on-time arrival rate, keeping your day on track.
Strictly Gas Safe
Never compromise on gas safety. Every WarmZilla installation in the capital is completed by rigorously vetted, fully registered Gas Safe professionals to protect your property and warranty.
Zero City Surcharges
Forget about surprise invoices for Congestion Charges, ULEZ, or Zone 1 parking permits. Our fixed online quotes absorb all local transport fees.
Your New Boiler in 3 Easy Stages
Step one
Select
Tell us about your London property - whether it's a Victorian terrace or a modern high-rise - to generate an accurate, fixed-price quote instantly.
Step two
Schedule
Pick a boiler from top brands like Worcester Bosch, then choose an installation date that suits your busy lifestyle.
Step three
Install
Our local engineer will arrive on time, fit your new heating system with minimal disruption, and take away the old unit.
Transparent Pricing for the Capital
Heating companies routinely inflate their prices inside the M25. We believe in fair, national pricing, regardless of your postcode.
| Feature | WarmZilla (Fixed Price) | Local Independent | Large Energy Providers |
|---|---|---|---|
| Punctuality | 98% On-Time | Unpredictable | Reliable |
| Unexpected Fees | £0 (All Included) | Parking + ULEZ Added | Often Added Later |
| Emissions Standards | Ultra-Low NOx Ready | Varies Wildly | Compliant |
| Safety Standards | Gas Safe Certified | Must Verify Yourself | Certified |
| Average Cost | From £1,979 Fully Fitted | £1,900 - £2,500 (Quality Varies) | £2,800 - £4,000+ (Brand Premium) |
Don't Just Take Our Word For It: See Why Greater London Homeowners Trust WarmZilla!
Partner of CompareTheMarket & MoneySuperMarket
Rated Excellent on Truspilot
Trusted Partner of Checkatrade
Trusted by Londoners
"Living in a cramped flat in Camden, I was worried a new combi wouldn't fit where the old one was. The WarmZilla engineer sorted it without a fuss and took the old tank away. Perfect service and no hidden parking fees."
Hanan M."The enginer arived fast and done a proper job fitting my new boiler. he was freindly and cleaned up all the mess before he left. Definatly using them again if I needs to."
"Quoted a price on the website and that is exactly what I paid. It’s a relief to find a company that doesn’t suddenly add a surcharge for ULEZ or parking permits on the day of the install. Fantastic new Worcester Bosch and they left the kitchen spotless."
Tom R.Tackling Greater London's Heating Hurdles
Compact Living Spaces
The Issue: Many London flats and period conversions lack the airing cupboard space required for traditional hot water cylinders, and standard boilers can dominate small kitchens.
The Fix: We specialise in fitting ultra-compact combi boilers that slot discreetly into standard kitchen cupboards, freeing up your valuable living space.
Strict Emission Zones
The Issue: Greater London's Air Quality Neutral (AQN) regulations mean that installing the wrong, highly-polluting boiler can breach local environmental rules and planning conditions.
The Fix: WarmZilla exclusively installs A-rated, high-efficiency, Ultra-Low NOx boilers that easily meet the capital's stringent clean air requirements.
Boiler Installation Areas in Greater London & Surrounds
Central & Inner London
Westminster, Kensington & Chelsea, Hammersmith & Fulham, Camden, Islington, Hackney, Tower Hamlets.
South of the River: Lambeth, Southwark, Wandsworth, Lewisham, Greenwich.
North & West London
Barnet, Enfield, Harrow. Extended coverage to Watford, Slough, and Uxbridge.
South & East London
Croydon, Bromley, Sutton, Kingston upon Thames, Merton.
East: Bexley, Havering, Barking & Dagenham, Redbridge, Newham, Waltham Forest.
FAQ's
Boiler installation in Greater London typically starts from £1,890 with WarmZilla. This fixed price includes the boiler, flue, magnetic system filter, and installation by a Gas Safe-registered engineer.
No. We absorb the 'London Friction' costs. Your fixed price covers the ULEZ charges, Congestion Zone fees, and the complex parking permits required in boroughs like Camden and Westminster.
Yes. To meet the Air Quality Neutral (AQN) regulations required by many London planning permissions, we install high-efficiency Ultra-Low NOx boilers that keep the capital's air cleaner.
Because of severe space constraints, compact combi boilers are essential for flats. They fit neatly into standard kitchen cupboards and eliminate the need for large hot water cylinders or loft tanks.
Absolutely. Because of Thames water hardness, integrated scale protection is mandatory to prevent your system from failing. We include a magnetic system filter on every install to combat this.
Currently, the primary Warmer Homes grant scheme is paused and closed to new applicants until Spring 2026. However, we offer 0% finance options to make upgrading to an efficient new boiler affordable today.
Our Local Hub in London
WarmZilla London
4.8 (2,000+ reviews)
Our local engineering team operates from this hub, ensuring rapid response times across London and across the Greater London region.
54 Poland St,
London, W1F 7NJ
Mon - Fri: 8am - 6pm