Boiler installation in Harrow
Loft conversions and rear extensions added over the years, none of which the original system was ever resized for.
- Gas Safe registered and fully insured
- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
- Workmanship guaranteed
Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825
Boiler installation in Harrow
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Boiler installation in Harrow
- Loft conversions with bathrooms added above what the system was sized for
- Rear extensions where radiators were added onto an existing circuit
- Properties on their third heating system, with pipework surviving from all of them
Harrow’s semis are close together, with a narrow side passage between each pair. A flue terminal on that side wall ends up near the neighbour’s windows and the boundary, which limits where it can go and sometimes means a plume kit or a move to the rear wall. Many of these houses still store hot water in a copper cylinder in the airing cupboard, often with an immersion heater as backup. Heating systems on their third boiler usually carry a mix of old steel and newer copper, and that mix produces sludge. A thorough flush and a magnetic filter protect the new boiler from what the old pipework sheds. Front drives make delivery straightforward on most streets. Building control is notified by the Gas Safe engineer when the job is finished, and the compliance certificate arrives by post.
Everything boiler installation covers
- New boiler supply and installation
- Combi, system and heat-only boilers
- Converting between system types
- Relocating a boiler to a better position
- Flue routing and condensate arrangements
- Old unit removed and taken away
We cover Harrow, across HA1, HA2, HA3, HA5. What kind of buildings are around here tends to decide what goes wrong: read more about plumbing in Harrow →
Common questions
Do you cover Harrow?
We do. Harrow falls within Harrow, covering the HA1, HA2, HA3, HA5 postcodes, and our engineers are out across Greater London from our Fulham office every day.
The top floor is always cold. Will a new boiler fix it?
Only if the boiler is the problem, and in a house with a loft conversion it often is not. More commonly the system was never resized for the extra radiators, or the circuit needs balancing. We would rather establish that first than sell you a boiler that changes nothing.
We rely on the immersion heater when the boiler breaks down. Would we lose that with a combi?
Yes. A combi heats water as you use it, so there is no cylinder and no immersion heater to fall back on. If the boiler fails, you have no hot water until it is fixed. A system boiler with a cylinder keeps the immersion as a backup, at the cost of the airing cupboard space. For a household that has come to depend on that backup, it is a real reason to keep a cylinder.
What does it cost?
You will have a price for the work before an engineer starts. If something behind the wall changes the scope, we pause and talk it through with you rather than carrying on and billing you afterwards.
Other jobs we cover nearby
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Emergency plumber in Harrow
Burst pipes, major leaks and no water. We take calls around the clock and get an engineer moving.
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Boiler repair in Harrow
No heat, no hot water, or a boiler locked out on a fault code. Diagnosed first, then fixed.
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Bathroom installation in Harrow
A single fixture swap through to a full strip-out and refit, priced up front.
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Boiler service in Harrow
The annual check that keeps a boiler safe, efficient and inside its warranty terms.
Boiler installation in other areas
Boiler installation in Harrow
Give us your postcode and a quick description of the problem, and we’ll tell you what it costs before anyone sets foot on site.