Montreal’s largest and most innovative air conditioning and ventilation contractor since 1957 with 40 service vehicles on the road 24 / 7. Guaranteed Industries specializes in the design, installation, service and maintenance of HVAC systems for the commercial, industrial, residential and institutional sectors. Sales and installation of air conditioning, heat pumps, humidification, furnaces and air purification systems. Additional services are available through our affiliated companies AirQualité Ltd. for duct cleaning and air quality analysis and Dynapompe Inc. for pump and motor repair, service and system design. Guaranteed Industries’ engineers and technicians are committed to providing the ultimate in climate control comfort, utilizing the most advanced technology including geo-thermal, digital controls, air purification and environmentally approved products that are safe for the planet.