Heating, renewables & gas
5 heating, renewables & gas listed by the Guernsey Building Trades Employers Association (GBTEA), the island's building-trades employers body. Membership is the association's own — this site neither vets nor ranks these firms, and a firm's absence means it is not a GBTEA member, not that it is unsuitable.
Chim Chiminee Limited
GBTEA member — Chimney Lining , Stove & Fire Accessories.
Duquemin & Ozanne Ltd
GBTEA member — Builders Merchants & Suppliers, Kitchens, Bedrooms & Bathrooms, Tiles & Tilers, Heating Consultants, Design & Supply.
Guernsey Electricity Limited
The island's statutory electricity generation/distribution utility, but its Contracting division is separately a GBTEA member in the Plumbing & Heating Engineers category (contracting@electricity.gg) and directly employs plumbers as well as electricians, offering installation and repair work to the public (site copy: 'Guernsey's reliable electricians and plumbers... our team'; NICEIC/OFTEC/Guild of Master Craftsmen credentials cited). Same firm also listed in electricians.json for its electrical-contracting role — the two entries describe one company's two trade divisions, not a duplicate.
Little Green Ltd
GBTEA member — Solar Panel & Renewable Energy Installations.