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.
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.
- 1927
- FoundedNearly 100 years of building mechanics in Quebec.
- 300+
- SpecialistsEngineers, technologists, certified professionals — LEED, CEM, CMVP, RCx.
- 4
- 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.
Kolostat Heating System Limited opens on Bleury Street, Montréal.
Relocation to Laval; tinplate factory opens.
Restructuring; tinplate factory closes.
Toronto office opens.
First energy-efficiency projects delivered.
Acquisition of ROJEC.
New Laval offices open in the industrial district.
Thornhill Capital acquires Kolostat.
New management team; Krome–Kolostat merger.
Acquisition of MSB Mechanical, extending operations into the Greater Toronto Area.
Groupe Climater acquires Kolostat.
New visual identity bringing all expertise together under the KOLOSTAT banner.
Mission & 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.
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 ClimaterAssociations & 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.
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.
| Project | Type |
|---|---|
| GOODLEAF FARMS | Thermal power plant |
| TRÉVI | Waste heat recovery |
| Hood Packaging | Energy modernization |
| Southwest One Complex | Energy modernization |
| Library and Archives Canada | New construction |
| Lyonleaf | New construction |
| DoubleTree by Hilton | Energy modernization |
| Complexe De Gaspé | Energy modernization |
| Altoria / Aimia Tower | New construction |
| Dicom head office | New construction |
| Ullivik Health Center | New construction |
| YMCA | Energy 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
Chief Executive Officer
Nick MacIsaac
Chief Operating Officer
Myriam Robichaud
Vice-President, Business Development
Vincent Clusiau-Perreault
Vice-President, Engineering
Alexandre Daigle
Vice-President, Preconstruction
Jason Wooden
Vice-President, Construction
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.
Environment
Innovative, responsible solutions.
We promote good environmental habits and positively influence employees, clients, and partners — designing for measurable reduction in environmental impact.
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.
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.
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Let's talk about your building
One mechanical partner for design-build, decarbonization, controls, and service across Quebec and Ontario.