Who we are
Founded in 2015. 744 reviews later.
A Gas Safe registered team of seven, built by David Armstrong from Harlow — and a five-star reputation built one honest job at a time.
D.A Gas, Heating & Plumbing was founded in 2015 by David Armstrong and works out of 39 Latton Green, Harlow. What began as one gas engineer is now a team of seven — a director, an office manager, three gas engineer-plumbers, a plumber and an apprentice — looking after homeowners, landlords and local businesses across Harlow, Bishop's Stortford, Sawbridgeworth, Epping and the surrounding Hertfordshire, Essex and London-border areas.
Everything gas is carried out and certified by Gas Safe registered engineers. We're a Worcester Bosch accredited installer and a Baxi approved installer — which is what lets us register manufacturer guarantees of up to 12 years on the Worcester Greenstar 8000 Style and up to 10 years on Baxi. We're G3/BPEC qualified for Megaflo and other unvented cylinders, a Which? Trusted Trader, and a Checkatrade member. For new boilers, finance is available through Phoenix Financial Consultants Ltd (FSR No. 942065).
The clearest picture of the firm, though, is in the reviews — 744 of them, every single one at five stars, with new ones arriving several times a week. A landlord who's trusted us for years across a home and two rentals because we don't upsell. A same-day gas safety certificate when it was needed in a hurry. An engineer who photographed a leak, explained it, and even passed on a roofer's details. On time, clean, honest — their words, not ours.
744
five-star reviews
2015
founded
Gas Safe
registered team
A team of seven
- 1
Director
Founder David Armstrong, who started the firm in 2015.
- 1
Office manager
Books your slot, keeps you posted and handles the paperwork.
- 3
Gas engineer-plumbers
Gas Safe registered, covering boilers, heating and plumbing.
- 1
Plumber
For the leaks, taps, pumps and everyday plumbing work.
- 1
Apprentice
Learning the trade the right way, on real jobs.
A word on credentials, plainly: everything is verifiable. See our accreditations and guarantees in full — Gas Safe, Worcester Bosch, Baxi, Which? Trusted Trader, Checkatrade and G3 unvented — with what each one actually means for you.
Where we work
Harlow based, right across Hertfordshire, Essex and the London borders.
We cover Harlow, Bishop's Stortford, Sawbridgeworth, Epping, Stansted, Great Dunmow, Hoddesdon, Ware and the surrounding areas — for homeowners, landlords and local businesses. We've carried out work as far as Colchester and Enfield too. Not sure you're in reach? Just ask.
See the towns we coverWhat customers say
Every star earned on the job.
“Fantastic service from DA Gas as always. The engineer showed up at the time I was given. The engineers work was to a high standard and he kept the place clean and tidy during his visit. We will always recommend DA Gas to anyone looking for works to be done.”
“D.A Gas provided a fantastic service end to end. Very responsive, quality work, and very good price. I would absolutely recommend them. I needed a Gas Safety Certificate and they came out same day. Very impressed”
“They were on time, clean, polite and located the issue in a timely manner. I was informed every step of the appointment of what they were doing. They took photos to show me what was causing the leak and sent these photos to me along with contact details for a roofer. Very honest in their opinion. I…”
“I've been using DA Gas for years now across my own home and 2 rental properties. What really sets them apart is their honesty — if something doesn't need fixing, they'll tell you. No upselling, no unnecessary work, just straightforward trustworthy advice. They're always very transparent with…”