Who are we?
Based in Chateauguay, on the south shore of Montreal, MST is a reference and a leader in air conditioning and heating. Our goal is to redefine comfort at home.
A team of dedicated and professional experts
Our business philosophy is based on unparalleled service and continuous training for our employees to offer better support to our customers. In addition to possessing the required certifications in their trade, our technicians will take the time to advise and inform you about your new appliance, air conditioning, heating or ventilation system. Their advice will help you get the maximum benefit from your appliance and prolong its lifespan.