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Duality Heating and Air

Open Now, 24/7

No Heat? No AC?
We're On the Way.

Same-day emergency service across the Denver metro. A real person answers the phone at 2 a.m. and the price we quote is the price you pay. Nights, weekends, and holidays never cost extra.

Call (720) 518-4328
  1. 1

    Tell us what's wrong

    Three taps. Thirty seconds.

  2. 2

    We call you back

    A real Denver dispatcher, within minutes.

  3. 3

    Truck on the way

    Same day. No overtime fees, ever.

Request service

Step 1 of 3

What's the issue?

Step 2 of 3

Step 3 of 3

Your information is always secure and private.

  • 5.0 500+ Happy Customers
  • NATE NATE CertifiedIndustry Qualified
  • BBB A+ RatingBetter Business Bureau
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While You Wait

Five 30-Second Checks Before the Truck Arrives.

About one in five no-heat calls is fixed by one of these. If it is, we'll happily cancel the visit and you owe nothing.

  1. 1

    Thermostat set to Heat (or Cool) and a few degrees past room temperature?

  2. 2

    Furnace power switch on? It looks like a light switch on or near the unit.

  3. 3

    Breaker tripped? Check the panel for anything not fully on.

  4. 4

    Filter clogged? A packed filter can shut a system down on high limit.

  5. 5

    Smell gas? Leave the house, then call your gas utility, then us.

What Counts as an Emergency

If Your Home Is Unsafe or Unlivable, Call Now.

  • No heat below freezing

    Pipes can freeze in hours. We prioritize homes with kids, seniors, or pets.

  • No cooling in a heat wave

    Indoor temps over 85°F are a health risk. Same-day dispatch.

  • Gas smell or CO alarm

    Get out first. Call the utility, then call us to make the system safe.

  • Water pouring from the unit

    A failed condensate line or boiler leak can ruin floors and ceilings fast.

(720) 518-4328Open 24/7 in Denver Book a Service