Written by Mark Reid,
Trades Editor
Ranking is 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 engineering is genuinely their main line of work, not a sideline to general plumbing or another trade. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have gone through our full verification process, 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 complete list. Other businesses here haven't been independently checked by us, and their inclusion isn't an endorsement. Always carry out your own checks before hiring anyone.
| # | Business | Rating | Reviews | Phone | |
|---|---|---|---|---|---|
| 1 | Swansea Gas and Oil Limited | ⭐ 5.0 | 138 | 07737307035 | View → |
| 2 | Warmserve Services Limited | ⭐ 4.8 | 160 | 01792 348210 | View → |
| 3 | Cambriani Plumbing & Heating Ltd | ⭐ 4.9 | 95 | 07513 172406 | View → |
| 4 | Gas Services Wales Ltd | ⭐ 4.9 | 54 | 01792 475100 | View → |
| 5 | R.A.J. Heating Ltd | ⭐ 4.8 | 55 | 07970 754851 | View → |
| 6 | Star Gas Services Wales | ⭐ 4.9 | 28 | 07552 387260 | View → |
| 7 | The Gower Heating Co | ⭐ 5.0 | 18 | 01792 209407 | View → |
| 8 | C A Jones & Son Ltd | ⭐ 5.0 | 18 | 01792 466306 | View → |
| 9 | PlumbAge | ⭐ 5.0 | 11 | 07383 081725 | View → |
| 10 | GasTec Ltd - Brynmill | ⭐ 5.0 | 4 | 01792 974502 | View → |
Our Top Picks
Swansea Gas and Oil Limited is a heating engineering firm serving Swansea and the surrounding area. Covering both gas and oil systems, the company holds a five-star rating across 138 Google reviews, suggesting a consistent record of reliable work. It operates from the SA4 4FN area, making it well placed for customers across the western side of the city and into the neighbouring communities.
Read more →Boiler installation and central heating repair sit at the core of what Warmserve Services Limited offers across Swansea and the surrounding SA4 area. With a Google rating of 4.8 from 160 reviews, the company has built a consistent record among local residents. Engineers cover both domestic and commercial properties, making them a practical option for neighbours on either side of that divide.
Read more →Boiler installation and breakdown repair form the core of Cambriani Plumbing & Heating Ltd's work in Swansea. The firm also handles central heating servicing and general plumbing faults, building a reputation reflected in a 4.9 rating from 95 reviews. Based in the SA5 area, it covers surrounding neighbourhoods for both routine maintenance and urgent callouts.
Read more →Gas Services Wales Ltd provides comprehensive gas engineering services across Swansea from their base in St Helen's Mews. The company maintains an impressive 4.9/5 star rating based on 54 verified customer reviews, reflecting their consistent service delivery. They serve both domestic and commercial clients throughout the Swansea area, handling gas installations, repairs, and safety inspections.
Read more →Boiler installation and servicing forms the core of R.A.J. Heating Ltd's work in Swansea, alongside general plumbing repairs for households across the SA2 area. The firm has built up a solid reputation locally, reflected in a 4.8 rating from 55 reviews. Landlords and homeowners alike use the company for both routine maintenance and emergency callouts.
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Add Your BusinessStar Gas Services Wales provides professional gas engineering services throughout Swansea, operating from their base in Brynhyfryd. The company has earned a strong reputation with a 4.9/5 star rating from 28 verified customer reviews, reflecting their reliable approach to gas installations, repairs and maintenance work.
Read more →The Gower Heating Co provides gas engineering services to customers across Swansea from their Orchard Street base. The company has earned a 5-star rating from 18 verified customer reviews, reflecting their reliable approach to heating system installations, repairs and maintenance. Their team of qualified gas engineers serves both residential and commercial properties throughout the Swansea area.
Read more →C A Jones & Son Ltd provides gas engineering services to customers across Swansea from their Mansel Street base. The family-run company maintains an exceptional 5-star rating from 18 verified Google reviews, reflecting their commitment to reliable gas installation, maintenance and repair work. Their established presence in the SA1 area makes them a trusted choice for both domestic and commercial gas engineering requirements.
Read more →PlumbAge provides gas engineering services to customers throughout Swansea, handling installations, repairs, and maintenance work. The company has earned a perfect 5-star rating from 11 verified customer reviews, reflecting their reliable service and professional approach to gas system work.
Read more →GasTec Ltd serves Swansea and the surrounding SA2 area from their Brynmill base, providing professional gas engineering services for residential and commercial properties. The company maintains a perfect 5-star rating based on 4 verified customer reviews, reflecting their reliable approach to gas installations, repairs, and safety inspections. Their experienced engineers handle all aspects of gas work, ensuring compliance with safety regulations throughout the Swansea region.
Read more →Get listed and reach customers actively searching for your services in this area.
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