Commercial HVAC Denver Metro | Free Estimates · Licensed in 8 Counties
Offices, retail, restaurants, medical, multi-tenant. Rooftop units (RTUs), split systems, VRF, and light commercial heat pumps. NATE Certified technicians serving the entire Denver metro area.
Commercial HVAC Across the Denver Metro Area
On Time Heat & Air provides commercial HVAC services for small to mid-size businesses across the Denver metro area. We service rooftop units (RTUs), split systems, VRF systems, and commercial ductwork. Our commercial clients include offices, retail stores, restaurants, churches, medical clinics, and warehouses. We understand that downtime costs your business money — so we prioritize fast response, efficient repairs, and preventive maintenance that keeps your systems running year-round.
We hold active licenses in 8 Colorado jurisdictions — Adams, Arapahoe, Aurora, Broomfield, Commerce City, Denver, Douglas, and Jefferson — so we're fully authorized to work anywhere in the Denver metro. Every job comes with upfront pricing, honest recommendations, and our workmanship guarantee.
Typical Commercial Pricing
Commercial service: $135/hour flat rate, no overtime charges. RTU replacement: $5,500–$28,500 depending on tonnage (3–25 ton range). Maintenance contracts: $400–$1,200 per visit for small commercial. Free written estimates on all installations.
We answer the phone
When you call (720) 527-0668, you reach our team directly — not a call center. We're owner-operated since 2013, NATE Certified, and licensed in 8 counties. Same-day diagnosis available. Financing from $79/month. 5.0★ from hundreds of Google reviews across the Denver metro.
Why Choose On Time Heat & Air for Commercial HVAC?
Our NATE Certified technicians have the training and real-world experience to handle any commercial HVAC job. We provide upfront pricing, honest repair-vs-replacement guidance, and stand behind every job with our workmanship guarantee. We also offer commercial maintenance agreements to keep your systems running reliably and extend equipment life.
Commercial HVAC Systems We Work On
From rooftop units to multi-zone VRF systems, our NATE Certified technicians are equipped to service, repair, and install all major commercial HVAC equipment types.
Rooftop Units (RTUs)
Light commercial RTUs for offices, retail, and restaurants. Diagnosis, repair, and full replacement up to 25 tons. We stock common RTU parts on our trucks.
Split Systems
Commercial split-system AC and heat pump installations and repairs. Multi-zone configurations for larger floor plans and mixed-use spaces.
VRF / Mini-Split Commercial
Variable refrigerant flow systems for precise zone control. Ideal for offices, medical suites, and multi-tenant buildings requiring individual temperature control.
Commercial Heating
Gas furnaces, heat pumps, and package unit heating for commercial spaces. Full installations, repairs, and seasonal tune-ups before Colorado winters.
Ductwork & Ventilation
Commercial ductwork design, installation, sealing, and repair. Proper ventilation ensures air quality and system efficiency across your entire building.
Maintenance Contracts
Quarterly, semi-annual, or annual PM plans. Includes filter changes, refrigerant checks, coil cleaning, electrical inspection, and written reports.
Fully Equipped Commercial HVAC Vans
Our service vans carry commercial-grade parts and tools so we can diagnose and repair most issues on the first visit — minimizing your business downtime.
Commercial HVAC Jobs in the Denver Metro
From rooftop unit diagnostics to full commercial system installations — our NATE Certified technicians handle it all with professionalism and precision.
Common Commercial HVAC Needs We Solve
Commercial HVAC keeps your business comfortable and your equipment protected. Here are the most common issues we address across the Denver metro.
Rooftop Unit (RTU) Failures
Light commercial RTUs take a beating from Colorado's extreme temperature swings. We diagnose and repair them fast to minimize downtime for your business.
Uneven Temperatures Across the Space
Often a zoning, airflow, or capacity issue affecting your customers and employees. We diagnose the root cause and fix it properly — not just mask the symptom.
Rising Energy Costs
Aging or poorly-maintained commercial equipment wastes money every month. A tune-up or equipment upgrade often pays for itself within one season.
Unexpected Breakdowns
Downtime costs revenue. Preventive maintenance catches problems before they close you down. Our maintenance contracts include priority emergency dispatch.
New Construction & Tenant Improvements
Opening a new location or renovating? We handle full commercial HVAC design and installation, pull all required permits, and coordinate inspections across all 8 licensed jurisdictions.
How We Work With Commercial Clients
- We assess your equipment and usage to recommend repair, replacement, or a maintenance plan that fits your budget.
- We prioritize minimizing downtime — scheduling around your business hours where possible.
- We provide written upfront pricing so you can budget without surprises.
- We offer maintenance agreements that keep equipment running and extend its life.
What Affects Commercial HVAC Cost
Equipment Type and Size
Rooftop units, split systems, and multi-zone setups vary widely in cost. We provide free written estimates before any work begins.
Repair vs. Replacement
We give honest guidance based on equipment age, condition, and repair cost relative to replacement value — never upsell you on equipment you don't need.
Maintenance Plan
Preventive plans cost far less than emergency downtime. For commercial clients, the math almost always favors a maintenance agreement.
Rooftop Access and System Complexity
Rooftop access, crane requirements, and system complexity affect labor. We account for all of this in your written estimate upfront.
Commercial HVAC in Your City
We're licensed and active in 8 Colorado jurisdictions. Click your city for local commercial HVAC pricing, response times, and a same-day quote.
Top 8 Service Cities
Commercial HVAC in Aurora
ZIP: 80014 · 15–25 min response
Commercial HVAC in Denver
ZIP: 80202 · 20–35 min response
Commercial HVAC in Centennial
ZIP: 80112 · 15–25 min response
Commercial HVAC in Englewood
ZIP: 80110 · 20–30 min response
Commercial HVAC in Littleton
ZIP: 80120 · 20–35 min response
Commercial HVAC in Parker
ZIP: 80134 · 25–40 min response
Commercial HVAC in Highlands Ranch
ZIP: 80129 · 20–35 min response
Commercial HVAC in Lakewood
ZIP: 80226 · 25–40 min response
All Other Service Cities
Commercial HVAC in Westminster
Commercial HVAC in Arvada
Commercial HVAC in Thornton
Commercial HVAC in Broomfield
Commercial HVAC in Commerce City
Commercial HVAC in Brighton
Commercial HVAC in Castle Rock
Commercial HVAC in Lone Tree
Commercial HVAC in Greenwood Village
Commercial HVAC in Golden
Commercial HVAC in Wheat Ridge
Commercial HVAC in Henderson
What Our Customers Say
5.0★ Google reviews · Real customers across the Denver metro
"I have had the pleasure of having On Time Heat and Air at my house to service my furnace, and both times have been amazing. Timely and professional. On Time will be my go-to!"
"We had bad experiences with other HVAC companies, and On Time was sent to fix the mess. Our technicians had a great attitude, diagnosed the problem, and quickly fixed everything."
"On Time Heat and Air is the best HVAC company I've ever worked with. They showed up on time, explained everything clearly, and the price was exactly what they quoted. Highly recommend for any commercial work."
Frequently Asked Questions
Real answers from the On Time Heat & Air team.
What sizes of commercial buildings do you service?
Small to mid-size commercial: offices, retail, restaurants, medical clinics, churches, and warehouses up to about 25,000 sq ft. We handle RTUs, package units, split systems, and light commercial heat pumps. For very large industrial systems, we can refer you to a commercial specialist.
Do you offer commercial HVAC maintenance contracts?
Yes — quarterly, semi-annual, or annual PM contracts tailored to your equipment count and operating hours. Includes filter changes, belt inspections, refrigerant checks, electrical inspection, coil cleaning, and written reports. Typical pricing: $400–$1,200 per visit for small commercial.
How fast can you respond to commercial emergencies?
Same-day during business hours for most of the Denver metro. 24/7 emergency dispatch for businesses with active service contracts. New commercial customers without a contract: best-effort response with an honest ETA at the time of your call.
Can you handle our HVAC permits and inspections?
Yes — we pull permits and coordinate inspections for all commercial work that requires them. We hold active licenses in 8 Colorado jurisdictions (Adams, Arapahoe, Aurora, Broomfield, Commerce City, Denver, Douglas, and Jefferson) and have the experience to navigate municipal permit requirements across the entire Denver metro.
Do you do restaurant kitchen HVAC?
We handle the general HVAC for restaurants — rooftop units, split systems, and make-up air. Type 1 commercial kitchen hoods, grease duct cleaning, and exhaust systems require specialty contractors. We can refer you to trusted kitchen exhaust specialists for that work.
Will you provide upfront pricing for commercial work?
Yes — written estimates before any work starts, just like residential. We don't use time-and-materials billing for commercial work unless the scope is genuinely too uncertain to fix-price (some emergency repairs). No surprises.
Do you service commercial HVAC after hours without overtime fees?
For maintenance contract customers: yes, no overtime fees. For non-contract emergency calls: same rate structure as residential — no time-of-day surcharges.
What brands of commercial HVAC do you service?
Carrier, Trane, Lennox, Rheem, York, Bryant, Daikin, Goodman, AAON, and most major commercial brands. RTU work, package units, split systems, VRF, mini-split commercial — all standard parts of what we do.
Other HVAC Services
AC Repair
Fast diagnosis and repair for all AC brands. Same-day emergency service available 24/7.
AC Installation
Professional central air installation and replacement. Free estimates on all new systems.
Furnace Repair
Expert furnace repair for all makes and models. 24/7 emergency heating repair available.
Furnace Installation
New furnace installation and replacement. Energy-efficient systems with financing options.
Heat Pump Services
Heat pump installation, repair and maintenance. Year-round comfort, energy-efficient.