St Martin
Gas Safe and OFTEC-certified heating and plumbing company offering oil boiler servicing, central heating, and legionella control.
Thirty-three firms — 19 limited companies, nine sole traders — dominate the parent heating-engineers category (33 of 42). Specialisation weight sits on oil: five OFTEC and four BPEC registrations to two Gas Safe, reflecting an island still largely off mains gas. Nine belong to GBTEA; Vale and St Peter Port hold 14 of the 33. —
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St Martin
Gas Safe and OFTEC-certified heating and plumbing company offering oil boiler servicing, central heating, and legionella control.
St Martin·Est. 1993
✦Oldest in this niche
Gas Safe Registered heating and plumbing company established in 1993, specialising in central heating, air source heat pumps, and underfloor heating with four Gas Safe registered engineers.
Forest
Plumbing, heating, and lead roof work specialist, having completed the Nelson Place renovation and offering free quotes across Guernsey.
Vale
Alexander Plumbing Ltd offers plumbing and heating services across Guernsey, from boiler installation to renewables and 24/7 call-outs.
St Peter Port
Guernsey-registered plumbing and bathroom renovation company offering emergency repairs, boiler installation, heating, and wet room installations.
St Martin·Est. 1997
Guernsey plumbing and heating company in St Martin, providing domestic and commercial services since 1997.
Vale·Shop·Est. 2012
Kaill Plumbing & Heating offers plumbing, heating, stove and fire installation and repairs, and renewable energy services in Vale.
St Saviour·Est. 2025
The Squirrel Plumbing and Heating Guernsey Ltd provides Gas Safe registered plumbing and heating services, including 24/7 emergency callouts.
Castel
BPEC and City & Guilds certified heating engineer with over 16 years of experience in boiler servicing, hot water systems, and air source heat pump installations.
Vale·Est. 2022
Supplier of heating oil, commercial fuels, and Bio-Max100 renewable biodiesel, with OFTEC approved technicians for boiler servicing across Guernsey.
St Sampson
MCI Plumbing & Heating Ltd offers plumbing, heating, oil boiler and tank servicing, and stove and fire installation services in St Sampson.
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GBTEA member providing plumbing, heating, and renewable energy installation services as Ozanne Plumbing Ltd.
St Peter Port·Shop
Domestic and commercial plumbing and heating contractor in St Peter Port, offering installations, boiler servicing, and 24-hour emergency cover.
St Peter Port·Est. 2002
Plumbing and heating company established in 2002, offering oil boiler maintenance, central heating, and renewable energy solutions.
St Martin·Est. 2003
Electric Living installer and GBTEA member specialising in plumbing, heating, leadwork, and renewable energy installations, established in 2003.
Torteval·Professional services
✦Most experience: 27 years
Torteval-based plumbing and heating contractor offering installation, servicing, and renewable energy solutions across Guernsey.
St Sampson
St Sampson plumbing and heating company offering domestic and commercial services including boiler installations, heat pumps, solar panels, and drainage.
St Andrew
Dave Wilson Plumbing & Heating Engineers provides plumbing, heating, and renewable energy services across Guernsey, with 20 years' experience.
St Peter Port
St Peter Port general building contractor offering construction, plumbing, and home renovation services.
—·Shop
Guernsey heating and plumbing specialist offering leak detection, heating systems, and plumbing services.
Vale
Vale-based M&E contracting company offering electrical, plumbing, heating, and air conditioning services.
Vale
GBTEA member specialising in central heating, plumbing, and emergency plumbing and heating services across Guernsey for both commercial and residential clients.
Vale
Sole trader with 25 years of experience in electrical and plumbing services, offering 24/7 emergency call-outs and specialising in bathroom and heating upgrades.
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Sole trader specialising in central heating and plumbing services for both commercial and residential clients across Guernsey.
Castel
Sole trader specialising in plumbing, heating, central heating, drainage, and leadwork services in Castel.
Vale
Sole trader specialising in central heating and plumbing services, with 19 years of experience in the Vale.
St Sampson
Sole trader specialising in air source heat pumps, oil boiler servicing, and underfloor heating for residential, commercial, and industrial clients in St Sampson.
Vale·Shop
Plumbing and heating trade service based in the Vale parish.
St Peter Port
Part of Channel Islands Fuels Ltd
OFTEC-approved oil boiler and central heating service, maintenance, and breakdown assistance specialist in St Peter Port, a brand of Channel Islands Fuels Limited.
St Saviour·Shop
Plumbing and heating engineering contractor specialising in central heating services for both residential and commercial clients across Guernsey.
St Sampson
i Plumb - Plumbing & Central Heating provides plumbing and central heating installation and servicing to domestic and commercial customers.
Castel
Plumbing and heating contractor with John De La Mare as proprietor.