Heating installer in
Grand-Lancy

Devinaz SA

Since 1985 · 1–10 empl.·5.0(26)

Devinaz SA is a heating and solar systems contractor. It designs, installs and maintains heating systems and photovoltaic installations, and provides services including repairs, maintenance contracts and work on heat pumps and water heaters.

Nomali Suisse SA

Since 1985 · 1–10 empl.

Nomali Suisse SA is a building-sector company offering renewable energy and energy-efficient lighting solutions. Its services include heat pumps, solar and photovoltaic systems, solar and thermodynamic water heaters, signs, illuminated displays and architectural lighting, as well as advice and installation.

Bosson J.-Marie

Since 2006 · 1–10 empl.

Bosson J.-Marie is a business operating in the heating sector.

Thermex SA, succursale de Lancy

Since 2010 · 51–100 empl.·4.5(11)

Thermex SA, succursale de Lancy operates in building services engineering, planning, installing and maintaining heating, ventilation and air-conditioning systems. Its services also include renewable energy systems, energy recovery, building automation and technical design.

Maffiolo SA

Since 1989 · 11–20 empl.·5.0(3)

Maffiolo SA designs, installs and maintains thermal systems. Its services include planning, servicing and repairs for heating, air-conditioning and ventilation systems, heat pumps, heat and domestic hot-water production, and cooling distribution.

Thermoptimum SA

Since 2009 · 1–10 empl.·3.8(16)

Thermoptimum SA distributes, commissions, maintains and repairs climate-control and environmental technology systems. Its services cover heat pumps, solar collectors, boilers, burners, refrigeration equipment, control systems and building automation.

EnergiesTherm Solutions Sàrl

Since 2024 · 1–10 empl.

EnergiesTherm Solutions Sàrl specializes in heat pumps, providing installation, commissioning, maintenance, repairs and after-sales service. It also advises on heating systems and energy efficiency and is an official Giacomini partner.

ALPTEQ Swiss SA

Since 2023 · 1–10 empl.

ALPTEQ Swiss SA plans and installs building systems for construction and renovation projects. Its services include plumbing, heating, ventilation and air conditioning, solar energy, energy-efficiency renovations, building automation and floor coverings.

DTEnergies Sàrl

Since 2024 · 1–10 empl.

Cartier Tuyauterie Chauffage

Since 2026 · 1–10 empl.

MS Sàrl

Since 2026 · 1–10 empl.