Gas Installations & Servicing in Belfast & surrounding areas

DG Gas Safety Ltd is a local, reliable award-winning heating company that specialises in gas and oil boiler services for homeowners & landlords, from annual gas safety certificates, new heating installs, and boiler repairs in Belfast, Bangor, Newtownabbey, Newtownards, Lisburn and the surrounding areas.

Our Services


Gas Boiler Installations

Planning on a new gas boiler install or an oil to gas conversion?


Gas Boiler Servicing

Keep your boiler running at peak performance with a service.


Gas Boiler Repairs

Trust our expert engineers to make professional & reliable repairs.

dg gas installers

About Us

We our a local, reliable award-winning heating company that specialises in gas and oil boiler services, from annual gas safety certificates, new heating installs, and boiler repairs.

DG GAS SAFETY LTD is a well-established heating company. We have a great reputation and pride ourselves on our commitment to provide a professional and speedy service at all times. We maintain the highest quality of work, which has been recognised by winning two awards from the Northern Ireland Plumbing & Heating Awards 2021, Small Contractor Of The Year & Small Commercial Project Of The Year.

small contractor award
small commercial award
Glenn with award
illustration of plumbers

Trusted Heating Engineers

Our expert heating engineers are the right team to call for domestic gas heating services. We provide the fastest and most reliable installations, maintenance & servicing solutions to all our customers. We're committed to providing a first-class service to all.

What Our Clients Say

Amanda Mulligan

Brilliant service

Brilliant service from this company.
Arrived promptly and carried out necessary repair on my gas boiler.
Would highly recommend

Martine Martine

Absolutely amazed

Came in changed my gas boiler to a combi boiler all done in one day and was absolutely amazed at how clean they were wouldn't even have thought any work had been done really impressed with the work



Excellent and very professional, talked me through what needed to be done to convert my heating system ,left no mess , would definitely recommend .

Andrew Haigh


I was delighted with the work Glenn and Lewis carried out. I would highly recommend them. Great Job, neat and tidy.

Terence hillock

Great Job

I would highly recommend DG Gas Safety. We were having problems with our old boiler and got in touch with Glen through one of his team. Glen had a look at the job and the best way to complete it. He gave a really good price for the work and that's what was paid. The guys who did the work were excellent. They arrived on time, did a great job and left the place clean and tidy. Great customer service overall.

William Mcbride

Job well done

Had DG gas services out today having only phoned them the day before. Glen was amazing man.
Serviced my fire, not to say that it's as old as the hills and not been Serviced or cleaned in over 15 years.
What a fantastic job he did . Glen was friendly and helpful. Cleaned up the mess, totally dismantled the fire to reach the back boiler. Cleaned everything, tested everything with enjoyment doing his job.
I would recommend this company 100% too anyone.
Job well done

Stephen Laughlin

Fully Recommend

The guys at DG designed and fitted a complete heating system in our new store. They listened to our requirements and not only met them, but also suggested a few useful ideas such as including a Hive smart system which we LOVE. The work was carried out in a day and the place spotless. We at Beyond Performance 4x4 would have no hesitation in recommending DG Gas Safety.

Donal Hannaway

A very professional and reliable company

DG Gas Safety replaced my gas boiler. The boiler heats the property and provides hot water. The boiler broke down and DG Gas Safety prioritised the work immediately knowing that a family was dependant on the service. Excellent work and I will use DG Gas Safety for the annual maintenance service. A very professional and reliable company and I would recommend them to anyone. Thank you DG Gas Safety.

Liss O

Fantastic Job

\Would highly recommend using DG. Lovely people, very professional and did a great job. They didnt have the most easy jobs to do, and took them longer than expected, moving boiler and pipes but did it in there stride. Everything was done neat and tidy and they cleaned everything before they left. It was fantastic. We have had some terrible workmen lately but these guys where brill. Thankyou

Maureen D

Amazing Job

Wonderful service from start to finish. Would highly recommend. Top class professionals and great prices

Lewis S

Boiler repair

Highly recommend DG Gas Safety Ltd. This firm was recommended to us via a good friend when our boiler unexpectedly broke. Guys came the following day and fixed in a few minutes - prompt call out and very straight forward. Huge thumbs up and thank you.

Emma M

Boiler Repair

Cant recommend highly enough!! Very professional and knowledgeable. Fantastic service - thank you.

Ken G

Very happy customer!

Bought a new oven which never fitted due to gas pipes not positioned in a great place explained everything to the guys and they sorted out and re-positioned the pipe they even fitted the oven which I never asked but kindly did,would highly recommend to anyone looking professional guys who take pride in their work.

Have Questions? Reach Out To Us


Phone Us

07925 099 321




Visit Us

203 Newtownards Rd, Belfast, BT4 1HB

Gas safe logo

Reg: 542606

Company No. 102880

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calor logo
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Gas safe logo

Reg: 542606

Company No. 102880

phoenix logo

Registered Installers

sse logo
firmus logo

Registered Installers

calor logo
flo gas logo
idea heating logo