Boiler failed, with no heating or hot water? DGN GAS is a small, focused team that prioritises emergency boiler replacement across Hampstead (NW3) — we move quickly to fit a like-for-like replacement and get your home warm again, without the wait of a big outfit. Gas Safe registered. Free quote.
A boiler that’s died — no heating, no hot water, maybe a leak or a lockout — isn’t something that waits. If water is escaping, turn the system off and the mains if needed, then call us. We move straight to getting you a like-for-like replacement fitted and your home warm again.
We don’t put a stopwatch promise on it. What we do promise is that Hampstead boiler emergencies go to the front of the queue, and that a small, hands-on team means your job isn’t sitting behind dozens of others.
Because we’re a small, focused team rather than a big outfit juggling dozens of jobs at once, we can prioritise a failed boiler and move quickly — sourcing the right like-for-like replacement, draining down, swapping the unit and recommissioning, usually in a single visit for a straight swap. Worcester Bosch, Vaillant, Baxi and ATAG supplied and fitted, with full Gas Safe certification and the manufacturer warranty registered.
If your heating’s gone and an upgrade makes more sense than a like-for-like, we’ll size the right system on the spot. And if the old system is full of sludge, we’ll flag it — a fresh boiler on a dirty system fails early, so a clean install with a full flush protects the new one.
Hampstead is mostly Georgian and Victorian period homes, grand villas and mansion-block flats around the village, Frognal and Belsize Park — and that shapes an emergency replacement. In a mansion flat, a boiler swap usually needs the freeholder or managing agent’s sign-off, plus booked access, lift and parking arrangements and protection of the common parts. We’re used to handling that quickly rather than letting it stall the job, so a flat without heat doesn’t wait days on paperwork.
Much of NW3 sits in a conservation area with Article 4 restrictions, so the flue position and any external work has to be done sympathetically and compliantly — even in an emergency. We plan the flue route properly rather than cutting a corner, so the replacement is safe, legal and right first time on a period frontage.
If your radiators have cold spots, your system’s noisy, or your boiler keeps cutting out, the usual suspect is sludge and corrosion in the pipework — and a powerflush may be the fix. Often people are told on a service that their system needs flushing, or notice radiators that won’t warm up properly.
We assess the system and carry out the right flush to clear the blockages that wreck efficiency and shorten a boiler’s life. It’s a high-value job we do right across London as a standalone service — and on a new boiler install we always include a full flush of the system as standard. See our powerflush service for what’s involved.
All gas work carried out by Gas Safe registered engineers. Registration No. 623092. Safe, certified work even at short notice.
Baxi Approved, Vaillant Advance & Worcester Bosch Installers. Manufacturer warranties fully protected on every replacement.
Verified five-star reviews from homeowners, landlords and families across London. Read them on our Google Business Profile.
Our team serves clients in English, Punjabi and Hindi.
Serving Hampstead
Homeowners across North West London call DGN GAS when the heating fails — here’s what they say:
"I had my boiler repaired by DGN GAS in an emergency — they were brilliant. The following year when it broke down again I got Ravinder to replace it. My daughter is about to renovate her property and wants a new boiler. She will be using DGN too."
"Amazing service provided by Ravinder and his team! Installation of a brand new central heating system as well as the water system. THANK YOU SO MUCH for excellent work. Highly recommended."
For a straight like-for-like swap, usually yes — we source the right unit, drain down, fit and recommission in one visit where the job allows. A more involved change, such as a different boiler type or a move, may take longer, and we’ll tell you upfront.
Sometimes. If your hot-water demand has grown or the old system was always underpowered, an emergency is a chance to right-size — a combi for a smaller flat, or a system boiler and cylinder for a larger period house. We’ll give you both options and the honest cost difference.
Yes — across Hampstead, Belsize Park, West Hampstead and into the wider NW London postcodes. Not urgent? See our boiler installation service.
DGN GAS covers emergency boiler replacement across Hampstead and nearby North West London including Belsize Park, West Hampstead, Highgate, Golders Green and St John’s Wood. For a planned replacement or new system, see boiler installation or our full coverage area.