Best Commercial HVAC Contractors in St. Louis, MO
Compare 20 commercial HVAC companies serving St. Louis, MO carrying a combined 3,966 Google reviews at an average of 4.6 stars. 3 offer 24/7 emergency response. Local crews service Rooftop Unit (RTU), Split System, Boiler, Heat Pump, and more. Request free quotes and hire the right contractor for your building.
Commercial HVAC Contractors in St. Louis
View allAll American Appliance and HVAC Services
St. Louis, MO
All American Appliance & HVAC Services — St. Louis, MO. Since 1980, licensed & insured, 4.7★ (2,586 reviews), same-day s...
St. Louis Heating and Air Conditioning
St. Louis, MO
St. Louis Heating and Air Conditioning: 4.9-star commercial HVAC serving offices, multifamily & retail within 25 miles o...
Action Mechanical Services
St. Louis, MO
Action Mechanical Services — O'Fallon, IL HVAC, plumbing & heating. Family-owned since 1989. 4.5★ (226 reviews). Free qu...
CSTK St. Louis
St. Louis, MO
CSTK St. Louis: Thermo King dealer for transport refrigeration parts, repairs & fleet service in St. Louis, MO. 45+ year...
Express Services Mechanical, Electrical, & Plumbing
St. Louis, MO
Licensed MEP contractor in St. Louis, MO. 4.9/5 stars, 24/7 emergency response, same-day service, and upfront pricing wi...
Tri-State Mechanical Services, Inc.
St. Louis, MO
Tri-State Mechanical Services — St. Louis commercial HVAC-R contractor, family-owned since 1989, NATE-certified, BBB A+,...
Commercial Kitchen Services
St. Louis, MO
Commercial Kitchen Services — St. Louis commercial kitchen equipment repair, maintenance & parts with 35 years of experi...
Murphy Company Mechanical Contractors & Engineers
St. Louis, MO
St. Louis mechanical contractor since 1907. HVAC, plumbing, refrigeration & data center services. 24/7 emergency repair...
GOLD STAR MOBILE SERVICES & REFRIGERATION LLC
St. Louis, MO
Gold Star Mobile Services & Refrigeration LLC — St. Louis, MO commercial refrigeration & mobile mechanical, 24/7, 4.2★ r...
icon Mechanical
St. Louis, MO
Icon Mechanical — Granite City, IL commercial HVAC & mechanical contractor serving St. Louis with design-build expertise...
United Refrigeration Inc
St. Louis, MO
United Refrigeration Inc in Brentwood, MO supplies commercial HVAC & refrigeration parts within 25 miles of St. Louis, b...
Haberberger, Inc. Mechanical Contractors
St. Louis, MO
Haberberger, Inc. — St. Louis mechanical contractor since 1948 offering HVACR service, piping, sheet metal, and design-b...
Niksic Air Conditioning & Heating
St. Louis, MO
St. Louis MEP contractor since 1991 — commercial HVAC, electrical & plumbing under one company, free estimates, 25-mile...
Safe Guard Commercial Services
St. Louis, MO
St. Louis commercial kitchen hood & exhaust cleaning since 1989. NFPA 96 compliant, 4.8★ rated, free on-site inspection....
A&H Mechanical Contracting
St. Louis, MO
A&H Mechanical Contracting — Troy, IL. 30+ years of commercial HVAC, plumbing & electrical. 24/7 emergency service. 4.6/...
General Parts Group
St. Louis, MO
General Parts Group | St. Louis commercial HVAC & foodservice equipment repair, factory-certified techs, OEM parts, 24-h...
St Louis Heating and Cooling
St. Louis, MO
St Louis Heating and Cooling: 24/7 commercial HVAC repair and installation in St. Louis, MO. 4.8-star rated. RTUs, boile...
Area Wide Inc.
St. Louis, MO
Area Wide Inc. — St. Louis commercial food service equipment sales, installation & repair since 1977. Walk-in coolers, i...
American Boiler & Mechanical
St. Louis, MO
American Boiler & Mechanical — St. Louis commercial HVAC, boiler, and mechanical contractor with 50+ years of experience...
Nations KEC
St. Louis, MO
Nations KEC | St. Louis commercial kitchen design, mechanical contracting & full-build coordination for restaurants and...
Commercial HVAC Services Available in St. Louis
Why Choose My HVAC Tech in St. Louis?
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Every contractor listed works on commercial buildings — RTUs, chillers, VRF — not residential.
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Frequently Asked Questions — Commercial HVAC in St. Louis
How many commercial HVAC contractors are in St. Louis, MO?
My HVAC Tech lists 20 commercial HVAC contractors serving St. Louis, MO, with a combined 3,966 Google reviews averaging 4.6 stars. 3 of them offer 24/7 emergency service.
How much does commercial HVAC service cost in St. Louis?
Commercial HVAC costs in St. Louis 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 St. Louis, MO?
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 St. Louis commercial HVAC contractors offer emergency service?
Yes, many commercial HVAC contractors in St. Louis 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 St. Louis?
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.