Denver Homes Comfortable Year-Round — Guaranteed

Apex HVAC installs, repairs, and maintains heating and cooling systems for homeowners who want it done right the first time.

★★★★★ 4.9 · 312 Google Reviews · Licensed & Insured · 24/7 Emergency Service
Apex HVAC technician servicing a residential rooftop unit in Denver

Certified & trusted by

NATE Certified technicians
BBB A+ Rating
Carrier Factory Authorized Dealer
Trane Comfort Specialist
Why homeowners choose us

Three things we won't compromise on

Upfront pricing, no surprises

We quote before we touch anything. If scope changes, we call you first. No invoice shock.

Same-day emergency service, every time

We give a 2-hour arrival window and text you 30 minutes out. Not a 4-hour guess.

Comfort guaranteed or we come back

If your system underperforms within 30 days of our work, we return at no charge.

What homeowners say

Trusted by homeowners across Denver

"They found a refrigerant leak two other companies missed. Saved us from buying a whole new unit."
James T., Aurora
"Every tech they’ve sent has been professional and didn’t leave a mess. That matters more than people think."
Linda K., Parker
Mike Reyes, owner of Apex HVAC

A note from our owner

"I started Apex in 2009 after watching my dad get hit with a $1,200 bill for a $90 part and two hours of labor. Every tech we hire goes through the same standard I'd want if it were my house on the line. That's not a marketing line — it's how we've kept customers for 15 years."

Mike Reyes

Owner & Master HVAC Technician

Questions we hear all the time

For non-emergencies, most jobs are scheduled within 48 hours. For emergency calls, we aim to arrive within 2 hours — day or night.
Yes. We work with GreenSky for 0% financing on approved system installs over $2,000. You can apply in minutes on-site.
Every Apex technician is NATE-certified and licensed in Colorado. We carry full liability insurance and workers’ comp on every job.
We service all major brands — Carrier, Trane, Lennox, Rheem, and more. For installs, we recommend Carrier and Trane based on long-term reliability in our climate.
Two seasonal tune-ups per year (spring and fall), priority scheduling, 15% off parts, and a dedicated tech who knows your system’s history.

Ready to stop thinking about your HVAC?

Get a free diagnostic estimate — no obligation, no sales pressure.