Your Trusted HVAC Experts

Kolostat is a fully integrated mechanical contractor with offices in Montreal and Toronto. Kolostat has been providing high-quality HVAC solutions since 1927.

Cleaning The Air You Breathe

Discover how Kolostat has developed a complete range of services and solutions to help its clients adapt their mechanical installations to the new reality imposed by the Covid-19 pandemic.

Kolostat White Papers

Download our latest white papers to stay up to date on HVAC best practice.

Kolostat Case Studies

Want to know you’re in good hands? Check out the latest Kolostat client case studies.

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Turnkey World-Class HVAC Design-Build Solutions

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.

BOMA & ASHRAE Toronto Joint Event: Planning for Rapid Net-Zero Carbon Commitment – Commercial Real Estate

By Ben Lipowitz, copresident Kolostat & Krome Kolostat was immensely proud and thrilled to attend the BOMA & ASHRAE Toronto Joint Event, which was entitled "Planning for Rapid Net-Zero Carbon Commitment - Commercial Real Estate". The discussion was moderated...

Kolostat has won the ASHRAE Technology Award

We are proud to announce that Kolostat has won the ASHRAE Technology Award at the 2023 Winter Conference in Atlanta! Our team is thrilled to receive recognition for our innovative building design that incorporates ASHRAE standards for effective energy management and...

Five tips to start the decarbonization process of your assets in recessionary environment

By Ben Lipowitz, copresident Kolostat & Krome While we all see, hear, and feel that something is wrong with the weather and the globe is getting warmer, we still must adhere to financial guidelines and limitation when it comes to the actions and capital that we...

Recap of the 2022 Real Estate Conference in Toronto by Ben Lipowitz (Coprésident Kolostat & Krome)

“It is not if, but when!" It was a Great real estate conference last week in Toronto. Obviously, the Canadian real estate market is slightly sluggish due to interest rates and overall global negative economic sentiment, yet the Canadian market fundamentals are still...

Kolostat is trusted by

Combustion Services

Preventive Maintenance

Grant Optimization

For close to a century, Kolostat has developed a sought after reputation of excellence and professionalism in the commercial HVAC and industrial fields, including ventilation, piping, combustion, and controls disciplines.

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.

  • 104 Office staff Associates
  • Well over 150 site tradesmen and service technicians on the road serving our clients
  • 17 licensed engineers working at Kolostat
  • 27 building mechanical technologists
  • 6 ASHRAE members
  • 7 LEED Accredited Professionals
  • Official partners include: Hydro Quebec and Énergir
  • Certifications include: CEM, CMVP, and RCx

Des services de design-construction sur mesure

Chez Kolostat, une approche personnalisée est mise de l’avant et permet à l’équipe de s’adapter à chaque situation pour répondre à vos besoins.

Au service des clients depuis plus de 95 ans

Entrepreneur mécanique spécialisé dans le domaine du CVAC, nous offrons des services intégrés et réalisons des projets clés en main, de la conception à la construction, voire même jusqu’à l’opération et l’entretien.

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