Denver’s neighborhood HVAC company
Book in about
30 seconds.
Pick what’s going on, add your zip, and tell us who to call. That’s it. No account, no address yet, no waiting on hold.
- 1
You tell us
A few taps. About 30 seconds.
- 2
We call back
A real Denver dispatcher, within minutes.
- 3
Price, then work
Nothing starts until you approve it.
Rather talk to a person?
Open 24 hours, including holidays. Call or text and a Denver dispatcher answers.
- $99 diagnostic, credited toward the repair
- No overtime fees, nights and weekends
- Same-day across the Denver metro
- Licensed, bonded, and insured Colorado LLC
- 5.0 12 Google reviews, all five stars ↗
- NATE CertifiedNorth American Technician Excellence
- BBB A+ RatingBetter Business Bureau
- LENNOX We service
Lennox systems - We service
Trane systems
What to expect
Your visit, step by step.
- 01
You send the form
A few taps, or call or text. About 30 seconds.
- 02
We call you back
A Denver dispatcher confirms the address and window.
- 03
Price in writing
Flat-rate, before any work. You say yes or no.
- 04
The fix
Most repairs finish on the first visit. Parts on the truck.
Who we are
Hello. We’re Duality.
Duality Heating and Air LLC is a Denver heating and cooling company run by one licensed technician and the people he trusts. We fix furnaces, ACs, heat pumps, and the air in your home, and we do it the way we’d want it done at our own house. Comfort, in perfect balance.
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Denver-based
One technician who lives here, not a call center in another state.
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Price in writing
You approve the number before we touch a tool. It never changes.
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Fix before replace
We repair what can be repaired and show you both numbers when it can’t.