Fifteen of Guernsey's 42 heating firms fit heat pumps — mostly plumbing generalists who added renewables, not standalone specialists. Ten are limited companies; four GBTEA members, four BPEC-registered. A1 Gas is the island's only Daikin and Mitsubishi approved installer; Danny Hill (1997) sits on Guernsey Electricity's approved renewables list. —
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St Martin·Service·Est. 1993
Part of Sarnia Energy Systems Limited
✦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.
Vale·Service
Alexander Plumbing Ltd offers plumbing and heating services across Guernsey, from boiler installation to renewables and 24/7 call-outs.
St Sampson·Service
St Sampson renewable energy installer specialising in solar PV, battery storage, heat pumps, and EV charging across Guernsey, Alderney, and East Sussex.
St Martin·Service·Est. 1997
Guernsey plumbing and heating company in St Martin, providing domestic and commercial services since 1997.
Castel·Service
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.
St Sampson·Service·Est. 2010
Plumbing and heating company specialising in luxury bathrooms, underfloor heating, and Saniflo systems.
St Sampson·Service
Gas Safe registered plumbing and heating company, an approved installer for Daikin and Mitsubishi, specialising in marine, caravan, and mobile home systems across Guernsey and Alderney.
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·Service·Est. 2002
Plumbing and heating company established in 2002, offering oil boiler maintenance, central heating, and renewable energy solutions.
Vale·Shop·Est. 2012
Kaill Plumbing & Heating offers plumbing, heating, stove and fire installation and repairs, and renewable energy services in Vale.
Torteval·Professional Service
✦Most experience: 27 years
Torteval-based plumbing and heating contractor offering installation, servicing, and renewable energy solutions across Guernsey.
St Martin·Service
Sole trader electrician in St Martin offering electrical work, electric heating, air source heat pump, and EV charging point installation.
St Sampson·Service
St Sampson plumbing and heating company offering domestic and commercial services including boiler installations, heat pumps, solar panels, and drainage.
St Saviour·Service
AFG Plumbing & Heating Ltd offers plumbing, central heating, and renewable energy installations including heat pumps and underfloor heating.
St Sampson·Service
Sole trader specialising in air source heat pumps, oil boiler servicing, and underfloor heating for residential, commercial, and industrial clients in St Sampson.