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Renovation, construction and general workElectriciansHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 275-0271In Mashteuiatsh, 3 companies are listed as active for heating, ventilation or air conditioning work in RBQ data dated November 4, 2026. All of them have held their licence for 10 years or more, the oldest since 2003; none got its licence in the last 90 days.

Renovation, construction and general workElectriciansHeating, ventilation and air conditioningWood stoves and fireplacesMasonryConcrete and foundationsSeptic systemsWells and water pumps
Call · 418 275-0271Renovation, construction and general workNew home buildersHeating, ventilation and air conditioningWood stoves and fireplaces
Call · 418 275-6288Renovation, construction and general workNew home buildersHeating, ventilation and air conditioningWood stoves and fireplacesConcrete and foundations
Call · 418 765-1441Ad · Featured placement · examplePreview only — this is not a contractor listing
Saguenay 104Alma 27Dolbeau-Mistassini 19Saint-Félicien 7Saint-Bruno 7Jonquière 4Roberval 4Normandin 3Saint-Ambroise 3Saint-Nazaire 3Hébertville 3
Looking for a heating and cooling contractor in Mashteuiatsh? All 3 companies on the list are also listed in other trades: renovation, construction and general work (3), wood stoves and fireplaces (3) and new home builders (2).
Mashteuiatsh ranks 12th of 31 cities in the Saguenay–Lac-Saint-Jean region for this trade, with 1% of the region's 210 companies.
The choice is limited in Mashteuiatsh. Companies from nearby cities in the region, such as Saguenay (104), Alma (27) and Dolbeau-Mistassini (19), may also serve your area: ask them.
Useful guides: Space heater safety: electric heaters and ethanol fireplaces · Air exchanger maintenance: filters, core and winter care · Heat pump in winter: settings, defrost and maintenance
Open data of the Régie du bâtiment du Québec as of November 4, 2026, updated every night.
Required licence, issuing body and subcategories for this trade: Heating, ventilation and air conditioning in Greater Montréal.
Source: Statistics Canada, 2021 Census, table 98-10-0233-01 (25% sample, rounded counts), Statistics Canada Open Licence.
Before you sign with a heating and cooling contractor in Mashteuiatsh: check the licence on the day, ask for written quotes and avoid large deposits. Printable checklist before you sign →