New & replacement boilers
Boiler installation in London
The right boiler depends on your property, how many bathrooms you have and how much hot water you use at once. We survey first, recommend a boiler that suits the home rather than the brochure, and put the price in writing before anything is ordered.
From £150/hr + VAT · weekdays 7am-7pm
Boiler installation from WeFix London
WeFix London installs combi, system and conventional boilers across London using Gas Safe registered engineers. We fit Ideal, Vaillant, Worcester Bosch, Glow-worm, Keston, Baxi and Potterton boilers, plus Megaflo and Heatrae Sadia cylinders. Most installations take one day. New boilers carry manufacturer warranties of up to 12 years, and you get a written estimate first.
Replacing an old, unreliable boiler can lower running costs and ends the cycle of call-outs. We remove and dispose of the old unit, flush or upgrade pipework where needed and commission the new boiler to the manufacturer’s standard.
Why choose WeFix for boiler installation
Written estimate
You see the full price before any work is booked.
Usually one day
Most like-for-like replacements are completed in a day.
Up to 12-year warranty
Manufacturer warranties registered for you.
Gas Safe
Every installation by a Gas Safe registered engineer.
What we cover
Our boiler installation services
Boilers we fit
- Ideal
- Vaillant
- Worcester Bosch
- Glow-worm
- Keston
- Baxi
- Potterton
Included in an installation
- Home survey and written estimate
- Removal and disposal of the old boiler
- Flue and condensate work
- Pipework upgrades where needed
- Controls and thermostats
- Commissioning and warranty registration
- Megaflo and Heatrae Sadia cylinders
Prices
Heating & gas rates
Published prices plus VAT. One-hour minimum, then 15-minute increments. Emergencies during normal hours at standard rates.
| Service | 7am - 7pm | 7pm - midnight | Midnight - 7am |
|---|---|---|---|
| Heating & gas | £150 | £195 | £375 |
| Service | 7am - 7pm | 7pm - midnight | Midnight - 7am |
|---|---|---|---|
| Heating & gas | £195 | £220 | £400 |
Materials supplied by WeFix carry a 30% trade charge. Bank holidays may differ. All rates · Instant estimate
How it works
What happens when you call
Step 1: Survey
An engineer looks at your current system, hot water demand, flue route and space.
Step 2: Written estimate
You receive a fixed written estimate with the boiler model and what is included.
Step 3: Installation day
We protect floors, remove the old unit, fit and commission the new boiler.
Step 4: Handover
We show you the controls, register the warranty and leave the area clean.
Reviews
From our customers
“Chris F. did a fantastic job again - even working in a last minute request that I had. Super happy on how efficient, calm and meticulous he works. From installing Lvt flooring, to sorting the sub-floor prep or skirting - Chris provides an excellent work.”
“Rob just came out for an emergency call out he fixed the broken tap offer some advice on some other plumbing issues. We had an excellent service and he was so friendly and helpful. Thank you”
“Trevor G was super efficient and repaired our floorboard within 15 minutes. Excellent service, competitive fees, very impressed. Highly recommend.”
Boiler installation - customer feedback
Restaurant Drainage Cleaning
“Got our drainage cleaned and new bits installed by Fabio, lovely guy was able to work around a busy resturant and get things done as quickly as possible. Thanks again 🙂”
Gas hob installed very quickly
“Mark Lavender was great. Got my gas hob installed very quickly and explained every step clearly.”
Highly recommended
“Dave fitted a new boiler for me following a previous emergency call out. He was incredibly professional, kind, tidy and friendly. His approach made a stressful situation a lot more manageable and I felt reassured throughout. He was punctual, knowledgeable and did an excellent job- if only all tradespeople were like that! Comes very highly recommended!”
FAQ
Boiler installation: your questions answered
How much does a new boiler cost in London?
It depends on the boiler type, output, flue position and any pipework changes, so we price each installation with a free-to-request written estimate after a survey. You will know the exact boiler model and total cost before you commit.
How long does a boiler installation take?
Most boiler installations are completed within one day. Larger systems, a change of boiler type or work that needs pipework upgrades can take longer. Your engineer confirms the expected installation time during the survey, before any work is booked.
Which type of boiler is best for my home?
Combi boilers suit most flats and smaller homes with one bathroom, heating water on demand without a tank. System or conventional boilers with a hot water cylinder are better for homes with two or more bathrooms used at the same time. We recommend based on your property and usage.
Do I need a Gas Safe engineer to install a boiler?
Yes. In the UK every gas boiler installation must be carried out by a Gas Safe registered engineer so the work meets gas safety regulations and manufacturer requirements. All WeFix gas work is done by Gas Safe registered engineers, who carry their Gas Safe ID card.
When should I replace my boiler?
Replace a boiler when it becomes unreliable, inefficient or expensive to repair, or when parts are no longer available. Older boilers often use more energy than modern high-efficiency models. If you are paying for repeated repairs, ask us for a replacement estimate to compare.
Related
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Need a plumber or heating engineer?
Call now and a real person at our London call centre will answer. Emergencies attended within one hour, day or night.