COMMERCIAL
Commercial HVAC — designed, built, optimized, maintained
A single mechanical-engineering partner for commercial, multi-residential, and mixed-use buildings across Quebec and Ontario (GTA). We help property managers improve building performance, reduce operating costs, and meet their ESG targets.
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- Certified specialistsLEED, CEM, CMVP, RCx — across four offices.
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- Projects deliveredMechanical scopes across Canadian buildings since 1927.
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- Grants securedÉcoPerformance, Énergir, Hydro-Québec funding won for clients in recent years.
See it in operation
Inside a Kolostat commercial mechanical project.
What we do for commercial buildings
Six engagements, one delivery org
Capex and opex from the same team — engineering, fabrication, controls, energy, and service all under one roof. The scopes that asset managers usually buy from three or four vendors, run by one.
New-construction mechanical installation
One contract and one integrated team for the engineering, fabrication, installation, and commissioning of HVAC, plumbing, gas, sheet metal, and controls on commercial and institutional new-construction projects.
Re-engineering for NOI
Convert an end-of-life HVAC system into a performing asset. Extend equipment life, reduce operating cost per square foot, and improve net operating income (NOI) — without a tear-down.
Heat pump and electrification retrofits
Heat pumps engineered for the Quebec climate, paired with grant-eligible work, delivered by Kolostat's energy and decarbonization division.
BMS performance monitoring
BMS controls and WebCTRL® / Automated Logic dashboards for real-time HVAC performance across a multi-site portfolio, built for ESG and operations teams.
Preventive maintenance contracts
Quarterly or biannual inspections, BMS monitoring, performance reporting, and priority dispatch for multi-site commercial portfolios.
24/7 emergency repair
One dispatch number, a fleet of 25+ trucks covering Greater Montréal and the GTA — heating, ventilation, air conditioning, piping, and controls, around the clock.
Featured commercial projects
Built. Certified. Visible
Two commercial mandates from the Kolostat portfolio — visual proof of the same in-house team operating across Quebec and Ontario.
Office tower · Montréal
Altoria / Aimia Tower
New-construction Montréal office tower for which Kolostat designed and built the full mechanical scope. LEED-certified, and part of the portfolio that has earned Kolostat multiple ASHRAE awards for innovative energy and sustainable-design projects.
- LEED
- Certified office tower
- ASHRAE
- Award-recognized portfolio
- New build
- Full mechanical scope
Mid-rise · Mississauga, ON
2100 Sherobee
A Mississauga commercial building in the Kolostat GTA portfolio — representative of how the Ontario offices extend the same mechanical-engineering and service capability into Greater Toronto.
- GTA
- Ontario delivery
- Newmarket
- Ontario office
Hotel · Montréal
The Westin Montréal
Active mechanical scope at The Westin Montréal — Kolostat-branded jobsite in the heart of the city. A representative downtown hospitality engagement where mechanical work happens behind an operating hotel front.
- Hospitality
- Hotel sector
- Downtown
- Montréal core
Multi-residential focus
Mechanical delivery in occupied multi-residential buildings.
Why owners choose Kolostat for commercial assets
The four levers asset managers actually buy
Procurement, asset management, and ESG teams shortlist on these four. Each is a sourced claim — no marketing varnish.
Delivery in occupied buildings
Mechanical retrofits sequenced around tenant operations — shutdowns, temporary services, and invasive work scheduled outside tenant hours. We deliver complex conversions in manned environments.
ESG-ready monitoring
Integrated dashboards and automated reporting feed your annual ESG disclosures and compliance audits directly. Built for asset managers and REIT portfolio teams.
Grant management
Eligibility, applications, and reporting across ÉcoPerformance, Énergir, Hydro-Québec, and NRCan — clients have captured roughly $50M in financing in recent years, with up to 75% of project costs grant-financed on past mandates.
LEED and ASHRAE track record
Multiple ASHRAE awards for innovation in energy and sustainable design, with LEED-certified deliveries including the Altoria / Aimia Tower in Montréal and Bell Canada HQ (Nun's Island).
Trusted by
Kolostat partners with major Canadian commercial-real-estate, REIT, and telecom-HQ portfolios across Quebec and Ontario.
- Telecom HQBell
- Telecom HQTELUS
- Financial commercialBanque Nationale du Canada
- Real estateMACH
- REIT / asset managerBentallGreenOak
- Multi-residential REITCAPREIT
How we work
Four steps from first conversation to commissioning
Meet
Senior-engineer site walk and discovery. Free.
Visit
We measure existing conditions, loads, and tenant constraints.
Diagnose
Engineering proposal with cost, schedule, and grant eligibility.
Build
Execution, commissioning, and performance handover.
Where this leads
The dedicated services for commercial portfolios
Each commercial engagement maps to a dedicated service page with scope, eligible grants, and contact paths.
Commercial HVAC design-build
One contract from engineering to commissioning for office, multi-residential, and mixed-use projects.
Commercial new construction installation
HVAC, plumbing, gas, sheet metal, and controls for new commercial and institutional builds.
Commercial sheet metal fabrication
In-house ductwork, custom fittings, specialty assemblies, and certified welding — shop and mobile.
Commercial HVAC maintenance
Quarterly and biannual preventive contracts, BMS monitoring, and priority dispatch.
24/7 emergency HVAC repair
Greater Montréal dispatch on 25+ trucks. Heating, ventilation, air conditioning, piping, controls.
Building decarbonization
Heat pumps, heat recovery, electrification, controls. Delivered by Kolostat's Energy division.
Grants and financing
ÉcoPerformance, Énergir, Hydro-Québec, NRCan — free eligibility check, application management, post-implementation reporting.
Also relevant
Solution context
Design-build a new system
One contract from engineering to commissioning — for new construction or full mechanical replacement.
Maintain and repair
Preventive maintenance contracts plus 24/7 dispatch across Greater Montréal and the GTA.
Decarbonize a portfolio
Our Energy division runs the full path — audit, roadmap, financing, build, monitoring. Most projects largely grant-financed.
Asset-manager FAQ
What enterprise buyers ask before they shortlist us
How do you minimize tenant disruption on an occupied office tower or multi-residential building?
We sequence mechanical work around tenant operations — staged shutdowns, temporary services, and invasive work scheduled outside business or sleeping hours. Our teams are routinely deployed in occupied, densely populated buildings, and the construction crew is backed by our service division (25+ trucks, 24/7 dispatch) for off-hours coverage.
Do you deliver LEED-certified commercial projects?
Yes. Our portfolio includes LEED-certified deliveries such as the Altoria / Aimia Tower in Montréal and the Bell Canada head office on Nun's Island — alongside other LEED-certified mandates across Quebec. The work has also earned Kolostat multiple ASHRAE awards for innovative energy and sustainable-design projects.
Can you handle a multi-property portfolio under a single master agreement?
Yes. We structure customized preventive-maintenance contracts that span multi-site portfolios across Greater Montréal, the South and North Shores, and the GTA — with consolidated reporting tailored to your asset mix. Our four offices — Laval (HQ), Montréal (our Energy division), Toronto, and Newmarket — field the same delivery org for capex and opex scopes.
How does grant funding work for commercial retrofits?
Kolostat's Energy division identifies eligible measures across ÉcoPerformance, Énergir, Hydro-Québec, and NRCan, files the analysis and implementation components, and produces post-implementation reporting. Up to 75% of eligible project cost has been financed by grants on past mandates. The eligibility check is free and takes about ten minutes.
Do you serve both Quebec and the GTA?
Yes. We operate from four offices — Laval (HQ), Montréal (our Energy division), Toronto, and Newmarket. Mechanical design-build, decarbonization, and 24/7 service span Greater Montréal and the GTA from the same delivery group.
How does your BMS and reporting plug into our ESG dashboards?
We instrument the buildings during commissioning and deliver energy-accounting dashboards on Automated Logic / WebCTRL® — measuring energy use, savings against baseline, and avoided tCO₂e on an ongoing basis. The output is structured so your ESG team can fold it directly into annual reporting and compliance audits.
Request a quote
Tell us about your project
Submit right here — a Kolostat engineer will follow up to scope the work. Email or phone is required.
Get started
Have a commercial mechanical scope?
One mechanical partner for design-build, decarbonization, controls, and service. RBQ (1269-6704-94), CMMTQ — across four offices in Quebec and Ontario.