Kolostat ~ Mechanical HVAC & Combustion Contractor

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.

Horticulture

HVAC Sevices

Industrial

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Technology

HVAC Sevices

Commercial

HVAC Sevices

Institutional

HVAC Sevices

Horticulture

HVAC Sevices

Industrial

HVAC Sevices

High Technology

HVAC Sevices

Commercial

HVAC Sevices

Institutional

HVAC Sevices

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.

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