Commercial HVAC Services in Sarnia & Lambton County

Postma provides commercial HVAC installation, maintenance and repair across Sarnia, Point Edward, Corunna, Petrolia, Watford and the broader Lambton County area. Rooftop units, boilers and hydronic systems, make-up air and refrigeration, with 24/7 emergency coverage. Call 519-354-9491.

Commercial HVAC Contractors Serving Sarnia & Lambton County

Postma’s commercial division services Sarnia, Point Edward, Corunna, Petrolia, Forest, Brigden, Wyoming, Watford and all of Lambton County.


Why Sarnia and Lambton County Businesses Work With Postma

What Sets Us Apart What It Means For Your Building
Capacity in a cold snap or heat wave 80+ licensed technicians and 60+ stocked service vehicles. When every contractor in the region is booked solid, depth of bench decides whether your building gets seen today or a week from now. We pride ourselves on the size of our team and being local to the community, allowing us to service our customers same-day to ensure that your system is back up and running ASAP.
Three trades, one call HVAC, plumbing and electrical under one roof and on one invoice. When a no-heat call turns out to be an electrical fault, or a boiler problem turns out to be a gas line, the company who diagnosed it is also licensed to fix it.
Documentation you can use Tagged assets, a written report after every visit, and a service history per unit. That record is what you need when you are building a capital budget, prequalifying for tendered work, refinancing or selling the building.
Licensed and prequalified TSSA registered contractor, ECRA/ESA licensed electrical contractor, licensed plumbing contractor, G1 and G2 gas technicians on staff, WSIB in good standing and full liability coverage. Certificates available on request for Lambton County tenders and prequalification packages.

Commercial HVAC Services Available in Sarnia

New Construction

Design-build and tendered mechanical packages for new Lambton County commercial builds and fit-outs.

Preventative Maintenance

Scheduled service with written condition reports, asset tagging and capital replacement forecasting.

Repair & Emergency

24/7 diagnosis and repair on rooftop units, boilers, refrigeration and controls.

Replacement

Boiler and rooftop changeouts, crane work and system upgrades scheduled around your hours.


Sarnia Commercial HVAC FAQ

Do you work on older boiler and hydronic systems?

Yes, and it is a larger share of our Sarnia work than our Chatham work. Condensing and atmospheric boilers, circulating pumps, glycol loops, expansion tanks, radiator and fan-coil distribution, combustion analysis and annual certification.

Can you take on tendered municipal or institutional work in Lambton County?

Yes. We hold TSSA and ECRA/ESA contractor licensing, WSIB in good standing and full liability coverage, and can supply certificates for prequalification. We take plan-and-spec tendered work as well as design-build.

Do you service equipment installed by another contractor?

Yes, and most of our commercial maintenance customers came to us that way. We inspect and document what is on the building, tag the assets, and build the service history from there.

Which Lambton County communities do you cover?

Sarnia, Point Edward, Corunna, Petrolia, Forest, Brigden, Wyoming, Watford and Grand Bend. For multi-site portfolios we will go beyond that radius, ask.

Need commercial HVAC service in Sarnia? Call 519-354-9491 or request a commercial assessment. See all commercial HVAC services, or our full range of commercial services.

Need commercial HVAC service in Sarnia or Lambton County? Call 519-354-9491 or send us an equipment list and we will scope it. Postma covers Sarnia, Point Edward, Corunna, Petrolia, Forest, Walpole, Watford and all of Lambton County, with 80+ licensed technicians and 60+ stocked service vehicles behind every call.