Best Commercial HVAC Contractors in Portland, ME
Compare 20 commercial HVAC companies serving Portland, ME carrying a combined 171 Google reviews at an average of 4.3 stars. 3 offer 24/7 emergency response. Local crews service Boiler, Heat Pump, Split System, Rooftop Unit (RTU), and more. Request free quotes and hire the right contractor for your building.
Commercial HVAC Contractors in Portland
View allSouthern Maine Mechanical
Portland, ME
Southern Maine Mechanical — Gorham, ME. Owner-operated, EPA-certified, 5-star rated commercial HVAC serving Portland met...
Pape Commercial Truck Center
Portland, ME
Pape Commercial Truck Center | South Portland, ME — 4.9★ rated commercial HVAC covering RTUs, boilers, chillers & more w...
Mechanical Services Inc
Portland, ME
Portland, ME commercial HVAC contractor servicing boilers, chillers, RTUs & more for offices, healthcare, and industrial...
Johnson & Jordan, Inc.
Portland, ME
Johnson & Jordan, Inc. — Scarborough, ME mechanical contractor est. 1991. Employee-owned, 250+ staff, serving Portland-a...
Johnstone Supply
Portland, ME
Johnstone Supply in Portland, ME — wholesale HVAC distributor with 22 Northeast locations, expert staff, and parts for R...
Knowles Industrial Services Corporation
Portland, ME
Gorham, ME concrete repair & masonry restoration specialist since 1924. 100% employee-owned. Not a commercial HVAC provi...
United Refrigeration Inc
Portland, ME
United Refrigeration Inc — Westbrook, ME — commercial HVAC & refrigeration service within 25 miles of Portland. 4.4/5 ra...
Mash Mechanical Inc.
Portland, ME
Mash Mechanical Inc. serves commercial HVAC needs across Greater Portland, ME — RTUs, boilers, chillers & more. Rated 4....
Spark Applied Efficiency
Portland, ME
Spark Applied Efficiency — South Portland, ME commercial HVAC, heat pumps, RTUs & VRF systems for offices, retail, resta...
AAA Energy Service - Headquarters
Portland, ME
Scarborough, ME commercial HVAC contractor serving Portland since 1948. RTUs, chillers, boilers, 24/7 emergency service,...
Titan Mechanical Inc
Portland, ME
Titan Mechanical Inc — Portland, ME commercial HVAC contractor offering design-build engineering, mechanical contracting...
Maine International Cold Storage Facility
Portland, ME
Commercial HVAC service in Portland, ME — RTUs, chillers, boilers & more across industrial, office, retail & government...
Trane Supply
Portland, ME
Trane Supply in Westbrook, ME provides Trane HVAC equipment and parts to commercial property managers within 25 miles of...
Warren Mechanical Inc.
Portland, ME
Warren Mechanical Inc. — Westbrook, ME commercial HVAC & plumbing contractor with 50+ yrs experience serving hospitals,...
CC Mechanical
Portland, ME
CC Mechanical — Portland, ME licensed HVAC/R contractor serving commercial buildings across Southern & Central Maine. Sa...
Riverside Mechanical Inc
Portland, ME
Riverside Mechanical Inc — Falmouth, ME commercial HVAC serving Portland metro. RTUs, boilers, chillers, heat pumps. 5-s...
Ferguson HVAC
Portland, ME
Ferguson HVAC in Westbrook, ME supplies commercial HVAC equipment, ventilation, and IAQ products to contractors serving...
Patriot Mechanical
Portland, ME
Patriot Mechanical — Gorham, ME commercial HVAC contractor serving Portland since 2007 with 24/7 emergency service and f...
MB Mechanical Contractors
Portland, ME
MB Mechanical Contractors — Scarborough, ME. ASME & NBIC certified, 35+ yrs experience. Commercial HVAC, boilers & pipin...
LiRo-Hill
Portland, ME
LiRo-Hill offers commercial HVAC in Portland, ME — RTUs, boilers, chillers & more for offices, healthcare & gov building...
Commercial HVAC Services Available in Portland
Why Choose My HVAC Tech in Portland?
Commercial-Focused Only
Every contractor listed works on commercial buildings — RTUs, chillers, VRF — not residential.
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Ratings pulled from verified Google Business Profiles — not anonymous form submissions.
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Frequently Asked Questions — Commercial HVAC in Portland
How many commercial HVAC contractors are in Portland, ME?
My HVAC Tech lists 20 commercial HVAC contractors serving Portland, ME, with a combined 171 Google reviews averaging 4.3 stars. 3 of them offer 24/7 emergency service.
How much does commercial HVAC service cost in Portland?
Commercial HVAC costs in Portland depend on the system type and scope of work. Routine service calls typically run $150–$400. Preventive maintenance contracts for a single rooftop unit average $200–$500/year. Full system replacements range from $8,000 for small packaged units to $100,000+ for large chiller plants.
How do I find a reliable commercial HVAC contractor in Portland, ME?
Start by verifying the contractor holds a current state license and carries adequate insurance. Check reviews from other commercial property managers on My HVAC Tech. Ask for references from similar properties (office, retail, industrial). Get at least three written quotes for any major project.
Do Portland commercial HVAC contractors offer emergency service?
Yes, many commercial HVAC contractors in Portland offer 24/7 emergency response. Response times vary — the best operators typically arrive within 2–4 hours for critical failures. Always confirm after-hours rates upfront, as emergency service typically carries a surcharge.
What's the best time of year to schedule HVAC maintenance in Portland?
For cooling systems, schedule spring tune-ups in March–April before peak demand season. For heating systems, fall service in September–October ensures readiness. Scheduling preventive maintenance during off-peak periods gives you faster scheduling and sometimes lower rates.