10 Best Commercial HVAC Companies in Denver

With three decades of experience, DenTech emphasizes honesty, fair pricing, and expert craftsmanship. Their services include heating, cooling, indoor air quality, and water heaters. Most importantly, they offer light commercial HVAC maintenance plans, making them well suited for businesses looking for reliable ongoing support.

• Competitive approach rather than pushing expensive upgrades.
• Experience and a local focus, meaning faster response times and familiarity with Denver climate/regulations.
• Maintenance plans tailored for businesses, which helps prevent the costly downtime associated with HVAC issues.

2. Summit Heating, A/C, Plumbing & Electrical

Operating since 1998, Summit boasts a team of NATE-certified technicians and markets itself as a top residential and commercial HVAC provider in Denver. They emphasize 100% satisfaction guarantees, emergency services, and full heating, cooling, plumbing and electrical support.

• 24/7 emergency service availability.
• Financing for installations and maintenance plans, which is useful for business clients budgeting larger projects.
• Broad service offering, which can be valuable if your facility needs more than just HVAC (e.g., plumbing, electrical).

3. Comfy Cave Heating & Air

Comfy Cave has over 25 years of experience in the Denver metro, specializing in installation, maintenance, and repair of HVAC systems (including boilers, ductless systems and light commercial applications). They emphasize honest pricing and personalized service.

• Their longevity (25+ years) suggests stability and deep regional experience.
• They handle both heating and cooling systems and also do preventative maintenance plans, which matter for commercial clients.
• Good for businesses looking for service rather than just new installs.

4. Great Guys Heating, Cooling & Electrical

A licensed & insured company with a “people over profits” philosophy. Great Guys offers heating, cooling, indoor air quality and electrical services. They emphasize technician-ownership and transparent communication.

• Emphasis on long-term customer relationships (many referrals) which is good for ongoing maintenance contracts.
• They cover installation, repair, and maintenance for businesses and homes alike.
• Could be a good contender if you want a company that feels more “boutique” yet capable.

5. JM Heating & Air

Founded in 2007, JM Heating & Air offers a decade+ of experience. Their team focuses on quality, integrity, and customer satisfaction across both residential and commercial projects.

• They provide full range of HVAC services, including installations, system replacements, and repairs.
• Their local focus means they’re familiar with Denver commercial HVAC requirements and regulatory environment.
• Good choice when you want a mid-sized provider with personal service.

6. Heart Heating, Cooling, Plumbing & Electrical

This company offers HVAC as well as plumbing and electrical services, making them an integrated service provider. They emphasize maintenance plans (Heart Family Membership) for ongoing care of systems.

• Maintenance plans help keep systems running, reduce unexpected failures, key for commercial HVAC.
• Their integrated services may reduce vendor overhead if you need HVAC plus plumbing/electrical.
• 24/7 live answering means quicker response in urgent situations.

7. Roots Heating & Air

Independently operated in the Denver metro, these folks emphasize honest service, emergency availability 24/7, and have earned recognition (e.g., 2024 “Best of Denver”) for their work.

• The 24/7 service means you’re covered outside standard hours, important for businesses.
• Their local roots mean deep experience with Colorado’s unique HVAC challenges (temperature swings, altitude, etc.).
• They appear to focus on comfort AND service rather than just pushing equipment.

8. Ultimate Heating & Cooling (Plumbing & Electric)

A family-owned business with over 25 years in HVAC, plumbing & electrical. They stress honest, flat-rate pricing and emergency availability day or night.

• Flat-rate pricing helps with budgeting and cost-controls.
• Broad service offering means fewer vendors to manage if your facility has multiple service needs.
• Long track record: 26 years and BBB “A+”.

9. Sparks Heating & Air

Sparks positions itself as a “factory direct, wholesale priced” HVAC company without commissioned sales staff, meaning the aim is to reduce markup and keep costs down.

• Cost control is often a major concern for commercial HVAC (large systems = big budgets).
• Their model may save you money on equipment and installation.
• Good option when price is especially critical.

10. Cool Sunshine Heating & Air Conditioning

With over 25 years of service in the Denver metro, Cool Sunshine emphasizes exceptional service, upfront pricing, and customer-focused installs for both heating and cooling (and IAQ).

• Strong focus on indoor air quality (IAQ) and system health, which is increasingly important for commercial spaces.
• Local experience with Denver climate and business buildings.
• Transparent pricing and experienced team.

How to Choose the Right Commercial HVAC Partner

Here are a few tips for evaluating these providers (or any HVAC company) for your commercial needs:

• Verify commercial experience. Residential HVAC is different. Ask about large systems, multi-zone control, rooftop units, chilled water vs. split systems, etc.
• Maintenance & uptime guarantees. Businesses cannot afford major downtime. Look for maintenance contracts, emergency response, and clear SLAs.
• Equipment & service transparency. Are you given plain explanations, system sizing info, energy usage projections?
• Local/regional knowledge. Denver’s climate, altitude, and permitting environment matter. Local contractors know the territory.
• Budgeting and pricing clarity. Flat-rate quotes, financing, predictable maintenance costs all help prevent surprise expenses.
• References and reviews. Look at recent commercial work, not just residential jobs.