Written by Mark Reid,
Trades Editor
Rankings are driven mainly by review rating and review count from public business listings, with a small lift given to businesses showing a working website and phone number. We check each business's homepage to confirm heating engineer work is what they primarily offer, which keeps unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have additionally passed our fuller verification covering trade qualifications and accreditations, public liability insurance, trading history, customer review history and registered company information; see our How We Verify page for the full list. Other businesses on this page haven't been independently verified by us, and their inclusion isn't an endorsement. Always do your own checks before hiring.
Our Top Picks
Action Plumbing and Heating provides gas boiler engineering services throughout Belfast from their base in the BT11 area. The company has earned an exceptional 5-star rating from 225 verified customer reviews, reflecting their reliable approach to boiler installations, repairs, and maintenance. Their experienced engineers serve residential and commercial clients across Belfast and surrounding areas.
Read more →solv Group Boiler Service & Repairs provides gas boiler engineering services throughout Belfast from their base in BT4. The company has earned a strong reputation with a 4.8-star rating from 314 verified customer reviews. Their qualified engineers handle boiler servicing, repairs and installations for residential and commercial properties across the area.
Read more →DG Gas Safety Ltd provides professional gas boiler engineering services from their base on Newtownards Road in Belfast. The company has earned a 5-star rating from 219 verified customer reviews, reflecting their reliable service across the Belfast area. Their qualified engineers handle boiler installations, repairs, and maintenance work for residential and commercial properties.
Read more →Belfast Boiler Installations provides gas boiler engineering services throughout Belfast, operating from their Little Patrick Street base in the BT15 area. The company has earned a 4.9 out of 5 star rating from 234 verified customer reviews on Google. Their team handles boiler installations, repairs, and maintenance work for residential and commercial properties across the city.
Read more →Heating engineers covering Belfast and the surrounding BT5 area, Z&M Heating Ltd handles boiler installation, servicing and repair work for domestic customers. The firm has built up a record of 133 Google reviews with a full five-star average, reflecting consistency across routine callouts and larger heating jobs alike.
Read more →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.
Read more →Families across east Belfast rely on Gaia Smart Energy for heating installations and repairs, particularly households looking to move towards more efficient systems. The firm has built a strong local reputation, reflected in a five-star average across 123 reviews. Its BT6 base allows for prompt attendance to breakdowns and routine servicing alike.
Read more →Heating Solutions NI provides gas boiler engineering services throughout Belfast from their Adelaide Street premises. The company maintains a 4.8/5 star rating based on 200 verified customer reviews, reflecting their consistent service delivery across Northern Ireland's capital. Their team handles boiler installations, repairs, and maintenance for residential and commercial properties in the BT2 area and surrounding districts.
Read more →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.
Read more →Families across Belfast rely on Chill Gas Ltd for boiler servicing, repairs and gas heating installation. The firm has built a following in the BT12 area, reflected in a 4.8 rating from 132 reviews. Work is carried out on domestic systems, keeping households warm through the colder months without unnecessary upheaval.
Read more →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.
Read more →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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Add Your BusinessA five-star average from 33 reviews points to consistent workmanship at McCorry Gas, Heating & Plumbing, which covers gas, heating and plumbing work across Belfast. The firm handles boiler installation, servicing and general plumbing repairs, with feedback suggesting reliability rather than one-off satisfaction. Further details on services can be found via the company's website.
Read more →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.
Read more →A 4.6 rating from 34 reviews points to consistent workmanship at Stephen Meneely Gas & Plumbing Ltd, a heating engineering firm operating in the BT14 area of Belfast. Work covers gas installation and plumbing repairs, catering to households needing boiler and heating system attention. The feedback pattern suggests reliability across repeat jobs rather than one-off praise.
Read more →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.
Read more →East Belfast and the surrounding area rely on Belfast Oil Tanks for oil heating installation and repair work. The firm handles tank replacements and boiler servicing for domestic properties, with a 5-star record from 12 reviews reflecting consistent workmanship across jobs in the BT postcode area.
Read more →A 4.9 rating from 14 reviews points to consistent workmanship at Zone Plumbing Ltd, a heating engineering firm operating in Belfast. The company handles boiler and heating system work for local households, with client feedback suggesting reliability across jobs. Details on specific services can be found via their website.
Read more →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.
Read more →Boiler breakdowns and repairs form the core of the work at FixMyBoiler.com, serving households across Belfast. The firm handles diagnostics and fixes for common faults rather than full installation projects, with a 4.6 rating from 22 reviews reflecting steady, workmanlike service. Callouts cover the BT15 area and surrounding neighbourhoods.
Read more →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 →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.
Read more →A perfect five-star record from six reviews reflects the consistency of Oil Tank Solutions NI's work across Belfast. The firm focuses on oil tank installation and related heating engineering tasks, serving homes that rely on oil-fired systems rather than mains gas. Its narrow specialism sets it apart from general heating engineers covering wider trades.
Read more →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.
Read more →Heating engineering across east Belfast covers boiler installation, servicing and repair for households needing reliable warmth through the colder months. W. Johnston Plumbing & Heating works on gas systems and general plumbing faults, fitting jobs around household schedules rather than the other way round.
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