Montreal's largest air conditioning & ventilation contractor for HVAC sales and service and installation of commercial & residential heat pumps, furnaces, ductless units, air filtration and controls.
Guaranteed Industries specializes in comprehensive HVAC solutions for both residential and commercial clients, offering installation, repair, maintenance, and geothermal systems across Montreal. Their expertise spans air conditioning, heating, ventilation, and indoor air quality services with a focus on efficiency and customer satisfaction since 1957.
Qualitair ventilation offers the best service and explains the work procedures performed as well as the goods made for the cleaning of your ventilation devices! Our mission is to give you good air quality and unparalleled service.
Please note that we are not doing any repair to your conditionned air or ventilation system, our specialty resides in the quality of air you and your familly breathes. We are exclusively specialised in ventilation and conditionned air cleaning.