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Duality vs. doing it yourself.
Plenty of HVAC problems are a filter, a battery, or a breaker. We’d rather you fix those for free. Here’s the honest line between a good Saturday project and a $99 visit that saves you an expensive mistake.
- One in five calls solved on the phone
- We cancel the visit if you fix it
- No charge for the advice
Do it yourself
Free, safe, five minutes.
- Change the filter
- Replace thermostat batteries
- Check the breaker and furnace switch
- Clear leaves and cottonwood off the outdoor unit
- Open every supply vent
- Test the CO detector
Worth a video, carefully
Doable if you’re handy. Power off first.
- Clean the flame sensor (fine emery cloth, gently)
- Clear a condensate drain with a wet-vac
- Replace a capacitor (only if you know how to discharge it)
- Hose down the condenser coil, power off
Call us
Gas, refrigerant, combustion. The $99 is cheaper than the mistake.
- Anything with gas: valves, burners, pressure
- Anything with refrigerant: it’s licensed for a reason
- Heat exchanger inspection: you need a camera and training
- Control boards and wiring on high-efficiency furnaces
- Combustion and CO testing
The honest trade
A $99 visit vs. a Saturday.
A capacitor is a cheap part. The expensive part is knowing it was the capacitor, discharging it safely, and not buying three wrong parts first. That’s what the $99 buys, and it comes off the repair.
Wrong part, twice
The most common DIY outcome. Parts stores don’t take returns on electrical.
Voided warranty
Most manufacturer warranties require licensed service.
The thing you can’t see
A cracked heat exchanger looks fine from the outside. It isn’t.
Your time
Most repairs are under an hour for us. Parts are 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.
Tried the checks?
Still broken? We’ll take it from here.
Three quick taps. A real Denver dispatcher calls to confirm your address and get a truck moving. No call center, no waiting on hold.
- Written flat-rate price before any work starts
- Same-day service across the Denver metro
- No overtime fees, nights and weekends included
Prefer to talk? (720) 447-0177, open 24 hours.