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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Horticulture

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High Technology

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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.

Net-Zero Leadership Summit organized by Canada 2020

On April 19th, Krome and Kolostat were on stage at the Net-Zero Leadership Summit organized by Canada 2020. Sandrine Tremblay, Co-President and Chief Technology and Innovation Officer, was invited as an industry leader in efficient building decarbonization. Several...

Net-Zero Leadership Summit: The Minister Champagne Event

Last night, our Co-President Kolostat-Krome attended the Minister Champagne event in preparation for the main Net-Zero Leadership Summit taking place today. It was truly inspiring to see so many thought leaders and sector experts come together to discuss the...

Vancouver Real Estate Forum

By Ben Lipowitz, copresident Kolostat & Krome Kolostat was at the Vancouver Real Estate Forum on April 5th at the Vancouver Convention Centre. We had the opportunity to connect with over 1200 CEOs, CFOs, COOs, private and institutional investors, portfolio and...

What is Design-Build?

Let's talk Design-Build! Design-Build is a great way to construct projects, particularly those related to energy efficiency and decarbonization. With over 100 projects delivered, Kolostat & Krome are leading the way globally, making them the biggest players in...

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 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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