Rankings are based on 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 their main line of work, which keeps unrelated trades off the page. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have additionally passed our full 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 full details. Other businesses haven't been independently verified by us, and their inclusion here isn't an endorsement. Always carry out your own checks before hiring.
Our Top Picks
Landlords and letting agents managing rental stock across Cardiff turn to Phixing Plumbing and HVAC Solutions for boiler servicing and heating repairs that keep tenancies compliant. The firm's work in the CF14 area has built a record of 197 reviews averaging five stars, reflecting consistency across repeat call-outs rather than one-off jobs.
Read more →Gastight Plumbing & Heating provides gas boiler engineering services across Cardiff and surrounding areas from their Penarth base. The company has earned a perfect 5-star rating from 96 verified customer reviews on Google. They specialise in boiler installations, repairs, and maintenance for residential and commercial properties throughout the region.
Read more →Families across Cardiff's CF3 postcode rely on Boilerhut Ltd for boiler servicing, repairs and installations when heating problems disrupt daily life. The firm has built a following among local households, reflected in a 4.8 rating from 98 reviews. Work covers routine maintenance through to full system replacements for homes in the area.
Read more →Spark to Flame Boilers & Heating provides gas boiler engineering services throughout Cardiff, specialising in boiler installations, repairs, and heating system maintenance. The company has earned a perfect 5-star rating from 64 verified customer reviews on Google. Their qualified engineers serve residential and commercial properties across the Cardiff area with reliable heating solutions.
Read more →GoGas Solutions Plumbing And Heating provides gas boiler engineering services throughout Cardiff from their CF14 base. The company has earned a perfect 5-star rating from 46 verified customer reviews on Google. Their qualified engineers handle boiler installations, repairs, and maintenance for residential and commercial properties across the Cardiff area.
Read more →A.T Heating & Plumbing provides gas boiler engineering services to customers across Cardiff from their base in Birchgrove. The company has earned a 4.8-star rating from 59 verified customer reviews, demonstrating consistent service quality in boiler repairs, installations, and maintenance. Their experienced engineers serve the CF14 area and surrounding Cardiff neighbourhoods.
Read more →Air source heat pump installation is the main focus at WDS Green Energy Ltd, working with Cardiff households looking to move away from gas boilers. The firm also handles servicing and system upgrades for existing renewable heating setups. A 4.9 rating from 41 reviews points to consistent workmanship on jobs that often require careful planning around insulation and property layout.
Read more →KB Heating & Plumbing provides gas boiler engineering services throughout Cardiff from their base in CF14. The company holds a perfect 5-star rating from 32 verified customer reviews on Google. Their engineers handle boiler installations, repairs, and maintenance for residential and commercial properties across the Cardiff area.
Read more →ADM Gas Plumbing and Heating provides professional gas boiler engineering services throughout Cardiff. The company holds an impressive 5/5 star rating based on 24 verified customer reviews, reflecting their reliable approach to boiler repairs, servicing and installations. Their qualified engineers serve residential and commercial properties across the Cardiff area.
Read more →Josh Munro Plumbing, Heating & Gas services provides comprehensive gas boiler engineering solutions throughout Cardiff from their CF14 base. The company handles boiler installations, repairs, and maintenance services for residential and commercial properties. With a perfect 5-star rating from 23 verified customer reviews, they have established a strong reputation for reliable gas heating services across the Cardiff area.
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Add Your BusinessGSG Plumbing and Heating provides gas boiler engineering services to customers across Cardiff from their base in Pen-y-lan. The company has earned a strong reputation with a 4.7-star rating from 32 verified customer reviews on Google. Their qualified engineers handle boiler installations, repairs, and maintenance work throughout the Cardiff area.
Read more →A perfect score from 13 reviews sets Ch4 Plumbing and Heating apart among heating engineers serving Cardiff. The firm covers boiler and central heating work, drawing on consistently positive feedback from local customers. Details of jobs and availability are shared via its blog rather than a conventional website.
Read more →Flamesmart provides gas boiler engineering services throughout Cardiff, specialising in boiler installations, repairs, and maintenance for residential and commercial properties. The company has earned a perfect 5-star rating from 10 verified customer reviews on Google, reflecting their reliable service and technical expertise. Their qualified engineers handle all aspects of gas boiler work, ensuring safe and efficient heating solutions for Cardiff area clients.
Read more →Households across Cardiff rely on Boiler Repair and Service Cardiff for breakdowns and routine servicing, particularly when hot water or heating fails without warning. Based in the CF10 area, the firm works on domestic boilers of various makes, fitting repairs around family schedules rather than the other way round. Feedback from local customers has been consistently favourable, with a 4.9 rating from ten reviews.
Read more →Cardiff households requiring boiler repairs or heating system installations can call on Glowtech Heating & Plumbing Ltd, based in the CF23 area. The firm holds a five star rating from eight reviews, reflecting consistent workmanship across its jobs. Beyond boiler work, the company also covers general plumbing needs for properties across the city.
Read more →Gasgasservices provides gas boiler engineering services to Cardiff and surrounding areas from their base in Penarth. The company has earned a perfect 5-star rating from 8 verified customer reviews on Google. They operate from CF64 and serve the local community with professional gas boiler maintenance and repair services.
Read more →Families across the CF14 area of Cardiff turn to DSB Heating & Plumbing for boiler repairs, servicing and general plumbing work. The firm has built a solid local reputation, reflected in a 4.7 rating from 13 reviews, and continues to respond to household heating problems as they arise around the city.
Read more →A clean five-star record from five reviews sets JD Heating Plumbing & Mechanical Servicing apart among Cardiff's heating engineers. The firm covers boiler servicing, repairs and general mechanical work, operating from the CF3 area to reach households across the city. Its small review count suggests a business built on repeat, local trade rather than volume marketing.
Read more →A 4.6 rating from ten reviews points to consistent workmanship at Climate Cardiff Ltd, a heating engineering firm serving the city. The company deals with boiler and heating system work, drawing on customer feedback that reflects reliability rather than volume. Those seeking a locally based engineer in Cardiff can weigh up the reviews alongside the firm's track record.
Read more →A 4.4 rating from local customers reflects the standard of work at Elite Home Heating, a Cardiff-based heating engineering firm. The company handles boiler installation, servicing and repairs for households across the city. Enquiries and further details can be arranged through its website.
Read more →Heating engineers at BPS Facilities Ltd cover Cardiff and the surrounding area, working on boiler installations, servicing and general heating repairs. The firm operates from CF23, taking on both domestic callouts and ongoing maintenance work for local properties.
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