About Us

Kolostat specializes in all aspects of the mechanical systems that run buildings. Our multidisciplinary team is skilled in delivering bid & spec and design-build projects, as well as providing service and preventive maintenance for your HVAC systems. With offices in Montreal and Toronto, Kolostat is proud to be a leader in the HVAC industry. Our in-house expertise, effective project management and competitive prices allow Kolostat to offer the best service on the market to its diverse customer base.


Over 430 dinner guests were at the 24th “Soirée Énergie” at the Hyatt Regency Montreal last Febuary 4th, hoping to see their teams and projects awarded the event’s prestigious awards.

Thanks to Stan Katz, General Manager of our piping division and his team, Kolostat was awarded the 1st prize in the category “Existing buildings greater than 10,000m²– other sectors” for the optimization of the heating and distribution of domestic hot water at the SouthWest One complex.

Congratulations to the entire team!

This past January 24th, Kolostat’s employees gathered together with champagne glasses raised to inaugurate our new majestic offices at 2005, Le Chatelier in Laval. We will shortly publish some photos of the event and our building, but in the meantime, don’t hesitate to come and visit us at our new location.