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.

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Kolostat 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.

Refrigerants: it’s the end of the recreation!

By Daniel Robert, Ing, LEED PA. ASHRAE 2022-2023 Society CTTC (Chapter Technology transfert Committee) Chair, Senior VP, Special Project, Kolostat-Krome Inc Photo Credit: JBC Média par Foulques Delbar Over the past few decades, several significant legislative changes...

Annual Conference of the HRAI

By Daniel Robert On September 18, 2023, the annual conference of the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI) took place in Montreal. The symposium brought together a large number of stakeholders in the building mechanical industry,...

Interview with Daniel Robert on RDI

We invite you to listen to Daniel Robert's interview on RDI, in which he talks about air conditioning during smog episodes. * The interview is only in French.   https://youtu.be/WlTrR6mgUI8

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...

Kolostat is trusted by

Combustion

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