ABOUT · SINCE 1927

Building tomorrow's buildings today, since 1927

Kolostat, a leader in integrated mechanical solutions and building energy efficiency. Expertise in HVAC, piping, energy management, and preventive maintenance — in Quebec, Ontario, and across Canada.

Talk to us Careers at Kolostat
1927
FoundedNearly 100 years of building mechanics in Quebec.
0+
SpecialistsEngineers, technologists, certified professionals — LEED, CEM, CMVP, RCx.
0
OfficesLaval (head office), Montréal, Toronto, Newmarket.

Our history

Nearly a century of building mechanics

From a 1927 family heating contractor on Bleury Street to an integrated mechanical group serving Quebec and Ontario — twelve milestones along the way.

  1. Kolostat Heating System Limited opens on Bleury Street, Montréal.

  2. Relocation to Laval; tinplate factory opens.

  3. Restructuring; tinplate factory closes.

  4. Toronto office opens.

  5. First energy-efficiency projects delivered.

  6. Acquisition of ROJEC.

  7. New Laval offices open in the industrial district.

  8. Thornhill Capital acquires Kolostat.

  9. New management team; Krome–Kolostat merger.

  10. Acquisition of MSB Mechanical, extending operations into the Greater Toronto Area.

  11. Groupe Climater acquires Kolostat.

  12. New visual identity bringing all expertise together under the KOLOSTAT banner.

Kolostat history timeline — 1927 to today

Mission & vision

Our mission

Save the planet, one system at a time, by building tomorrow's buildings today.
Every project we deliver contributes to reducing the environmental impact of infrastructure while optimizing our customers' economic and operational performance.

Our vision

Customer needs at the centre of every decision.

Our approach is collaborative and transparent. We provide continuous support from design through maintenance, delivering mechanical systems tailored to each customer — for the long term.

Kolostat field team on a Montréal rooftop next to cooling towers

Our values

Six values that guide us every day

The principles that shape how we work, how we collaborate, and how we serve our clients — across the whole organization.

  • Collaboration

    The power of teamwork — across partners, customers, and colleagues.

  • Integrity

    Honesty, ethics, transparency, and kept commitments.

  • Bold innovation

    Push technology and creativity. Calculated risk in service of better outcomes.

  • Excellence

    Exceed quality standards. Continual improvement on every project.

  • Wisdom

    Value experience. Learn from the past, anticipate the future.

  • All in good fun

    An enjoyable workplace — the source of motivation and creativity.

THE GROUP

Kolostat joins Groupe Climater

In 2025, Kolostat became part of Groupe Climater, a climate-engineering group active in France, Canada, and Switzerland. Together with KROME and MSB Mechanical, we are part of Climater Canada — the same teams and the same engineering, with the strength of a group behind them.

Visit Groupe Climater

Associations & distinctions

Recognized expertise

Associations, certifications, awards, and achievements that reflect the expertise, rigour, and daily commitment of our teams.

Associations we belong to

  • ASHRAE
  • CMMTQ
  • ACQ
  • Groupe BIM Québec
  • APCHQ
  • BOMA Québec
  • CQ3e
  • IDU
  • Réseau énergie bâtiment
  • ASPE
  • Canada Green Building Council

Certification

ISO 45001 occupational health and safety certification

Our occupational health and safety management system is certified to ISO 45001. This certification reflects our commitment to preventing risks, protecting our workers, and maintaining the highest safety standards on our job sites.

BOMA Energy Challenge

Five consecutive years of BOMA recognition.

Kolostat's Energy division has been awarded the BOMA Energy Challenge for Real Estate and the Supplier Mobilization Award in 2021, 2022, 2023, 2024, and 2025.

BOMA Energy Challenge — Kolostat 2021

ASHRAE-recognized projects

Innovation in energy efficiency and sustainable design.

Kolostat has received multiple ASHRAE awards for innovative projects in energy efficiency and sustainable design.

ProjectType
GOODLEAF FARMSThermal power plant
TRÉVIWaste heat recovery
Hood PackagingEnergy modernization
Southwest One ComplexEnergy modernization
Library and Archives CanadaNew construction
LyonleafNew construction
DoubleTree by HiltonEnergy modernization
Complexe De GaspéEnergy modernization
Altoria / Aimia TowerNew construction
Dicom head officeNew construction
Ullivik Health CenterNew construction
YMCAEnergy modernization
Bell Canada head office (Nun's Island)New construction

LEED-certified clients

Buildings certified to LEED.

  • Aimia / Altoria Tower
  • Dicom head office
  • Collège LCC (Lower Canada College)
  • Bell Canada head office (Nun's Island)
  • Fontaine Building
  • Yourbar Factory
  • Dollarama head office
  • Outdoor Gear Canada
  • ICAO Headquarters

From the CEO

A word from Alain Champoux

A short message from our CEO on what 1927 means to us — and the team behind the work today.

The team

The people behind every project in building mechanics

From a 1927 heating contractor to a multidisciplinary team — engineers, designers, draftsmen, control technicians, project managers, millwrights, service and maintenance professionals.

  • Alain Champoux

    Alain Champoux

    Chief Executive Officer

  • Nick MacIsaac

    Nick MacIsaac

    Chief Operating Officer

  • Myriam Robichaud

    Myriam Robichaud

    Vice-President, Business Development

  • Vincent Clusiau-Perreault

    Vincent Clusiau-Perreault

    Vice-President, Engineering

  • Alexandre Daigle

    Alexandre Daigle

    Vice-President, Preconstruction

  • Jason Wooden

    Jason Wooden

    Vice-President, Construction

  • Daniel Robert

    Daniel Robert

    Vice-President, Special Projects

ESG commitment

A positive environmental impact

ESG criteria guide our decisions, our practices, and our commitment to sustainable development. That commitment takes shape through three pillars and the day-to-day actions that support them.

  1. Environment

    Innovative, responsible solutions.

    We promote good environmental habits and positively influence employees, clients, and partners — designing for measurable reduction in environmental impact.

  2. Social

    Better conditions for our people.

    We maximize internal social dialogue to continuously improve employee conditions, safety, and engagement across every office and job site.

  3. Governance

    Fair, responsible, accountable.

    Decisions are based on well-founded, carefully studied rules. We develop accountability and transparency at every level of the organization.

ESG approach

Integrating concrete initiatives across our facilities.

Internal programs include ink-cartridge and IT-equipment recycling, sorting and recycling bins, digital records to reduce paper, and double-sided or recycled paper where unavoidable. Six initiatives we run every day:

  • Complete replacement of air conditioning and heating systems aligned with new server rooms, plus full LED lighting upgrade.

  • Construction material recovery and reinvestment through local community organizations.

  • Office water conservation — low-flow toilets and other water-saving devices throughout our facilities.

  • Reserved EV parking with charging stations for employees and visitors.

  • Wash stations with sediment recovery and wash-water reuse — closing the loop on shop water.

  • Lockers, showers, and bicycle storage to support active transportation by our teams.

Get started

Let's talk about your building

One mechanical partner for design-build, decarbonization, controls, and service across Quebec and Ontario.

Request a quote 514-333-7333