Commercial HVAC | Denver Metro | On Time Heat & Air
Rooftop units up to 25 ton · Furnaces up to 400,000 BTU · All brands · Restaurants, gas stations, retail, churches, schools & offices
On Time Heat & Air has been the Denver metro's trusted commercial HVAC contractor since 2009. We specialize in light commercial work — the kind that keeps your business open, your customers comfortable, and your equipment running efficiently. our team personally oversees every commercial job.
Commercial HVAC Services We Offer
On Time specializes in light commercial HVAC — the systems that keep restaurants, gas stations, retail stores, churches, schools, and office buildings comfortable year-round. We do not do industrial HVAC or commercial refrigeration. Our focus is commercial heating and cooling, done right.
Rooftop Units (RTU)
Installation, replacement, and repair of packaged rooftop units up to 25 ton. All brands. Gas/electric, heat pump, and cooling-only configurations.
Learn more →Commercial AC
Light commercial air conditioning for buildings up to 25 ton. Split systems, packaged units, and ductless multi-zone configurations for commercial spaces.
Learn more →Commercial Furnace
Commercial gas furnace installation and repair up to 400,000 BTU. Rooftop packaged gas units, indoor commercial furnaces, and make-up air units.
Learn more →Maintenance Contracts
Bi-annual commercial HVAC maintenance with priority emergency response, detailed service reports, and discounts on repairs. Protect your investment.
Learn more →Emergency Commercial Repair
Same-day commercial HVAC repair across the Denver metro. When your system goes down during business hours, we respond fast. Call (720) 527-0668.
Commercial System Design
Load calculations, equipment selection, and system design for new commercial construction and full system replacements. We size it right the first time.
Industries We Serve
Every commercial building type has unique HVAC demands. On Time has hands-on experience with the specific challenges of each industry below.
🍽️ Restaurants
High heat loads, make-up air, exhaust integration, health code compliance
⛽ Gas Stations & C-Stores
Convenience store comfort, 24/7 reliability, rooftop unit expertise
🛍️ Retail Stores
Customer comfort, energy efficiency, multi-zone control for large retail
⛪ Churches & Schools
Intermittent occupancy, large open spaces, budget-conscious solutions
🏥 Medical & Office
Precise temperature control, air quality, code compliance for medical
🏢 Multi-Tenant Buildings
Individual zone control, separate billing, tenant comfort management
Why Denver Businesses Choose On Time for Commercial HVAC
There are dozens of HVAC companies in the Denver metro. Here's what makes On Time different for commercial work specifically:
- ✓Owner on every commercial job. our team personally oversees all commercial HVAC work. You're not dealing with a rotating crew of subcontractors.
- ✓Licensed since 2009. CO CIB #00125054. A+ BBB accredited. EPA 608 Universal certified. Fully insured for commercial work.
- ✓All brands, no brand bias. We install and service Carrier, Trane, Lennox, Daikin, York, Rheem, Goodman, and more. We recommend what's right for your building, not what's most profitable for us.
- ✓Transparent commercial pricing. Flat-rate diagnostics. Written estimates before any work begins. No surprise invoices.
- ✓Same-day commercial service. We understand that a down HVAC system means lost revenue. We prioritize commercial calls.
Commercial HVAC Scope — What We Do
Equipment range: Rooftop packaged units (RTU) up to 25 ton · Commercial split systems · Commercial furnaces up to 400,000 BTU · Ductless multi-zone systems · Make-up air units · Commercial heat pumps
What We Don't Do
We do not do industrial HVAC (process cooling, industrial chillers, large-scale manufacturing). We do not do commercial refrigeration (walk-in coolers, freezers, display cases). Our focus is commercial heating and cooling — and we do it exceptionally well.
Service Area
We serve 25 cities across the Denver metro including Aurora, Denver, Lakewood, Centennial, Littleton, Midwest City, Mustang, Bethany, El Reno, and more.
Commercial HVAC by City
On Time provides commercial HVAC service across the entire Denver metro. Click your city for local commercial HVAC information.
Aurora, OK
Commercial HVAC · Rooftop Units · Maintenance
Denver, OK
Commercial HVAC · RTU · All Industries
Lakewood, OK
Commercial HVAC · Restaurants · Retail
Centennial, OK
Commercial HVAC · Gas Stations · Schools
All 25 Cities →
Full service area for commercial HVAC
Frequently Asked Questions — Commercial HVAC
What size commercial HVAC units does On Time service?
On Time services commercial rooftop units (RTUs) up to 25 ton and commercial furnaces up to 400,000 BTU. This covers most light commercial applications including restaurants, gas stations, retail stores, churches, schools, and office buildings under approximately 25,000 square feet.
Do you offer commercial HVAC maintenance contracts?
Yes. On Time offers commercial maintenance contracts with scheduled bi-annual inspections (spring and fall), priority emergency response, filter changes, coil cleaning, electrical checks, and detailed service reports. Contracts are available for single-unit and multi-unit commercial properties across the Denver metro.
What brands of commercial HVAC equipment does On Time work on?
On Time services and installs all major commercial HVAC brands including Carrier, Trane, Lennox, Daikin, York, Rheem, Ruud, Goodman, American Standard, and Bryant. We are not a single-brand dealer — we recommend what's right for your specific application and budget.
How quickly can On Time respond to a commercial HVAC emergency?
On Time offers same-day commercial HVAC service across the Denver metro. For commercial maintenance contract customers, emergency response is prioritized. Call (720) 527-0668 directly — our team answers most calls personally.
Do you do commercial HVAC for restaurants?
Yes — restaurants are one of our primary commercial markets. We service and install rooftop units, make-up air units, and commercial furnaces for restaurants across the Denver metro. We understand the critical nature of HVAC for food service operations and the specific challenges of high heat loads and exhaust integration.
Industries We Serve Across Colorado
Make-up air, exhaust integration, health code compliance for Colorado restaurants.
24/7 reliable systems for convenience stores and fuel stations across Denver metro.
Multi-zone comfort systems for retail stores, strip malls, and shopping centers.
Large open-space solutions for churches and houses of worship in Colorado.
Energy-efficient systems for schools, daycares, and educational facilities.
Precise temperature control and air quality for medical and dental offices.
Comfortable, efficient climate control for corporate offices and business parks.
Full commercial HVAC replacement and change-out services — all brands, all sizes.