16 Best Gas Engineers in Belfast for 2026

🔥 16 businesses · 📍 Belfast
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 29 May 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 29 May 2026
Belfast's housing stock is a real mix. You've got solid Victorian terraces across the Ormeau Road and inner east Belfast, pre-war semis in Finaghy and Lisburn Road, post-war social housing in Rathcoole and Twinbrook, and newer builds pushing out towards Newtownabbey and Castlereagh. That variety means gas engineers here need to be comfortable with everything from ageing back boilers and open-flued systems in older properties to modern condensing combi boilers in new-build estates. Belfast's damp climate puts central heating under real pressure, and with temperatures dropping sharply from October through to March, a failed boiler isn't an inconvenience you can sit on. Most gas engineers in the city cover installation, servicing, and repairs, with landlord gas safety certificates a significant part of many engineers' workloads given the density of rental properties in areas like Botanic, the Cathedral Quarter, and the university district around Stranmillis.

The businesses on this page were drawn from third-party business listings and ranked by their public review rating and review count. A small lift is applied to businesses that show a working website and a listed phone number, since these signals correlate with an active, contactable business. Before any listing appears here, we check each business's homepage to confirm that gas engineering work is what they primarily offer. That step is what keeps unrelated trades off the page. Permanently closed listings are removed automatically as part of ongoing maintenance. Where you see a Trust Verified badge on a listing, that business has gone further and passed our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. You can see exactly what that involves on our How We Verify page. For anyone listed without that badge, those checks haven't been carried out by us, and it's something you'll want to do yourself before you book.

Before you call anyone out, there are a few things worth doing. First, confirm the engineer is on the Gas Safe Register. That's a legal requirement for anyone working on gas appliances in the UK, and you can check a registration number directly on the Gas Safe Register website in seconds. Ask for a written quote before work starts, not just a verbal figure, and get two or three quotes if the job is substantial, say a full boiler replacement or a new heating system. Boiler swaps in Belfast properties can range from around £1,500 to well over £3,000 depending on the make, model, and the complexity of the pipework and flue run. Always ask whether the price includes parts, labour, and any building regulations notification if structural work is involved. On completion, a Gas Safe registered engineer should give you a Building Regulations Compliance Certificate for a new installation, and a CP12 certificate for a landlord safety check. Keep those documents safe.
How We Select & Rate The Best Gas Engineers in Belfast

Rankings on this page are driven by public review rating and review count pulled from third-party business listings, with a small lift applied to businesses that show a working website and a listed phone number. We check each business's homepage to confirm gas engineering is what they primarily offer, which is how unrelated trades are kept off the page. Permanently closed listings are removed automatically. Businesses carrying a Trust Verified badge have additionally passed our full verification, covering qualifications, insurance, trading history, customer review history, and registered company information. See our How We Verify page for the complete list. Other businesses on this page have not been independently verified by us, and inclusion is not an endorsement. Always do your own checks before hiring.

Positions 1–5 (Recommended and Featured) may be paid placements. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →

Quick Comparison — Gas Engineers in Belfast

# Business Rating Reviews Phone
1 Action Plumbing and Heating Recommended ⭐ 5.0 226 +44 28 9061 0944 View →
2 DG Gas Safety Ltd Featured ⭐ 5.0 219 +44 7925 099321 View →
3 solv Group Boiler Service & Repairs Featured ⭐ 4.8 314 +44 28 9045 1010 View →
4 Belfast Boiler Installations Featured ⭐ 4.9 234 +44 7899 080539 View →
5 Heating Solutions NI Featured ⭐ 4.8 200 +44 7704 435095 View →
6 Graham Wallace Plumbing and Heating Ltd ⭐ 5.0 132 +44 7878 548460 View →
7 N F Heating ⭐ 5.0 95 +44 28 9600 5051 View →
8 B W Gas Services ⭐ 5.0 50 +44 7825 159300 View →
9 Gilnahirk Boiler services ⭐ 4.9 48 +44 7734 910712 View →
10 Colin Stobo Gas Services ⭐ 5.0 18 +44 7809 143265 View →
11 Sloans Gas Energy Centre ⭐ 4.4 41 +44 28 9064 3049 View →
12 JD BOILER SERVICES ⭐ 5.0 10 +44 7927 646264 View →
13 Belfast Boiler Services ⭐ 5.0 9 +44 28 9560 1014 View →
14 Complete Gas Services ⭐ 4.7 15 +44 28 9228 0228 View →
15 AB Premier Boiler Services ⭐ 5.0 8 +44 7980 019228 View →
16 NI Boiler Service ⭐ 4.4 7 +44 7512 751371 View →

Our Top Picks

6
Graham Wallace Plumbing and Heating Ltd
Not Verified
5.0 (132 reviews)
Belfast +44 7878 548460

Graham Wallace Plumbing and Heating Ltd provides gas boiler engineering services throughout Belfast, specialising in boiler installations, repairs, and maintenance. The company has earned a perfect 5-star rating from 132 verified customer reviews, reflecting their reliable workmanship and professional service. Their experienced engineers handle all aspects of gas boiler systems for residential and commercial properties across the Belfast area.

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7
N F Heating
Not Verified
5.0 (95 reviews)

N F Heating provides gas boiler engineering services throughout Belfast from their base in the BT6 area. The company has earned a 5-star rating from 95 verified customer reviews on Google. Their experienced engineers handle boiler installations, repairs, and maintenance for residential and commercial properties across the city.

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8
B W Gas Services
Not Verified
5.0 (50 reviews)
Belfast +44 7825 159300

B W Gas Services provides professional gas boiler engineering services throughout Belfast, operating from their base on Thornberry Road in the BT14 area. The company has earned a perfect 5-star rating from 50 verified Google reviews, reflecting their commitment to reliable boiler repairs, installations and maintenance. Their experienced engineers serve residential and commercial customers across the greater Belfast area with comprehensive gas heating solutions.

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9
Gilnahirk Boiler services
Not Verified
4.9 (48 reviews)
Belfast +44 7734 910712

Gilnahirk Boiler Services provides professional gas boiler engineering services throughout Belfast from their base in the BT5 area. The company has earned a strong reputation with a 4.9 out of 5 star rating from 47 verified customer reviews. Their experienced engineers handle boiler installations, repairs, and maintenance for residential and commercial properties across the city.

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10
Colin Stobo Gas Services
Not Verified
5.0 (18 reviews)
Belfast +44 7809 143265

Colin Stobo Gas Services provides professional gas boiler engineering services to customers across Belfast from their base on Belvoir Drive. The company has earned a perfect 5-star rating from 18 verified customer reviews, reflecting their reliable approach to boiler installations, repairs and maintenance. Serving the BT8 area and surrounding Belfast neighbourhoods, they offer comprehensive gas heating solutions for residential and commercial properties.

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11
Sloans Gas Energy Centre
Not Verified
4.4 (41 reviews)

Sloans Gas Energy Centre provides gas boiler engineering services from their base on Ormeau Road in Belfast. The business maintains a strong 4.4-star rating from 41 verified customer reviews, reflecting their established reputation in the local heating industry. They serve the Belfast area from their BT7 location, offering professional boiler installation, maintenance and repair services.

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12
JD BOILER SERVICES
Not Verified
5.0 (10 reviews)
Belfast +44 7927 646264

JD Boiler Services provides gas boiler engineering services throughout Belfast from their base in BT14. The company has earned a 5-star rating from 10 verified customer reviews, reflecting their reliable approach to boiler installations, repairs and maintenance. Their experienced engineers serve residential and commercial properties across the Belfast area.

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13
Belfast Boiler Services
Not Verified
5.0 (9 reviews)

Belfast Boiler Services provides professional gas boiler engineering services from their base on Upper Newtownards Road in Belfast. The company maintains a perfect 5-star rating across 9 verified customer reviews, reflecting their reliable approach to boiler installation, maintenance and repair work. They serve customers throughout the Belfast area, offering comprehensive heating solutions for residential and commercial properties.

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14
Complete Gas Services
Not Verified
4.7 (15 reviews)

Complete Gas Services provides gas boiler engineering services throughout Belfast, specialising in boiler installations, repairs, and maintenance for residential and commercial properties. The company has earned a 4.7 out of 5 star rating from 15 verified customer reviews on Google. Their qualified engineers handle all aspects of gas boiler work, ensuring reliable heating solutions for homes and businesses across the Belfast area.

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15
AB Premier Boiler Services
Not Verified
5.0 (8 reviews)
Belfast +44 7980 019228

AB Premier Boiler Services provides gas boiler engineering services across Belfast, specialising in boiler installations, repairs, and maintenance. The company has earned a perfect 5/5 star rating from 8 verified customer reviews on Google. Their qualified engineers serve residential and commercial properties throughout the Belfast area.

Read more →
16
NI Boiler Service
Not Verified
4.4 (7 reviews)
Belfast +44 7512 751371

NI Boiler Service provides gas boiler engineering services throughout Belfast from their base in Dalebrook Park. The company has earned a 4.4 out of 5 star rating from 7 verified customer reviews, reflecting their reliable approach to boiler maintenance and repair work. Their experienced engineers serve residential and commercial customers across the Belfast area, offering professional solutions for heating system requirements.

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Transparency notice: Recommended (#1) and Featured (positions 2-5) listings may be paid placements, so a business's fee affects whether and where it appears in those positions. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →

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Frequently Asked Questions

How much does a gas engineer cost in Belfast?
Call-out fees typically range from £40-80, with hourly rates between £45-65 for standard repairs. Boiler services cost £70-120, while new combi boiler installations run £1,800-3,500 depending on the unit and complexity. Emergency weekend or evening work costs significantly more - often double the standard rate. Getting two or three quotes is standard practice for installations and major repairs, as prices can vary considerably between engineers.
How quickly can a gas engineer get to me in Belfast?
For emergencies like gas leaks or no heating in winter, most local engineers aim for same-day response, though you'll pay premium rates. Routine repairs typically get booked within 2-3 days, while boiler installations might have a 1-2 week wait during busy periods. Engineers covering central Belfast often have shorter response times than those serving the wider metropolitan area.
Do Belfast gas engineers work weekends and evenings?
Many offer emergency call-outs outside normal hours, but expect to pay 1.5-2 times the standard rate. Some provide planned weekend appointments for routine work at slightly higher rates. Emergency rates typically apply from 6pm weekdays and all weekend. It's worth asking about their emergency cover when booking routine maintenance.
What should I check before letting a gas engineer start work?
Always verify their Gas Safe ID card - you can check the number online at the Gas Safe Register website. Ask to see their insurance certificate and get a written quote before work begins. Don't pay large sums upfront, and be wary of door-to-door engineers or anyone pressuring you to decide immediately.
How often should I get my gas boiler serviced in Belfast?
Annual servicing is recommended and often required to maintain your boiler warranty. Many Belfast engineers offer service plans for £120-180 yearly, which include the annual service plus discounted repairs. Regular servicing helps prevent breakdowns during Belfast's cold, damp winters and maintains efficiency, potentially saving money on gas bills.
How do I choose between different gas engineers in Belfast?
Check their Gas Safe registration number online, read recent Google reviews focusing on similar jobs to yours, and get written quotes from 2-3 engineers. Ask about their warranty on work, typical response times, and whether they stock common spare parts. Local recommendations from neighbours or social media groups like Belfast community pages often provide valuable insights into reliability and pricing.