Service areas
Golden to Aurora. Castle Rock to Thornton.
Thirteen cities and every neighborhood between them, all from one shop in Englewood. Pick yours for drive time, the homes we see there, local questions, and zip codes.
- Same-day across the metro
- One shop, one truck, one number
- No trip charge beyond the $99
Our shop
3940 S Hazel Ct, Englewood, CO 80110
Every city below is inside 40 minutes, most inside 25.
Open in Google Maps-
Englewood, CO
5 minOur shop is here on S Hazel Ct. Englewood gets our fastest response times, often under an hour.
Arapahoe County · 4 zip codes · 6 neighborhoods
HVAC in Englewood -
Littleton, CO
12 minTwelve minutes south. From downtown Littleton to the foothills at Ken Caryl and Roxborough, we cover it.
Arapahoe County · 6 zip codes · 7 neighborhoods
HVAC in Littleton -
Centennial, CO
12 minTwelve minutes east. Centennial’s established neighborhoods get honest repair and replacement advice.
Arapahoe County · 5 zip codes · 7 neighborhoods
HVAC in Centennial -
Denver, CO
15 minOur home turf. From Capitol Hill brick to Central Park new-builds, we service every kind of system the city has.
Denver County · 22 zip codes · 10 neighborhoods
HVAC in Denver -
Highlands Ranch, CO
15 minFifteen minutes south. Full heating, cooling, and air quality service throughout Highlands Ranch.
Douglas County · 3 zip codes · 7 neighborhoods
HVAC in Highlands Ranch -
Lakewood, CO
20 minTwenty minutes west. Lakewood’s mid-century ranches and Green Mountain two-stories keep our truck busy all year.
Jefferson County · 7 zip codes · 7 neighborhoods
HVAC in Lakewood -
Wheat Ridge, CO
22 minTwenty minutes northwest. Wheat Ridge’s brick ranches and their original ductwork are familiar territory.
Jefferson County · 4 zip codes · 6 neighborhoods
HVAC in Wheat Ridge -
Aurora, CO
25 minColorado’s third-largest city and a big part of our map. Same-day emergency service across all of Aurora.
Arapahoe County · 12 zip codes · 7 neighborhoods
HVAC in Aurora -
Arvada, CO
30 minOlde Town charm to Candelas new-builds. Arvada is one of our busiest service areas.
Jefferson County · 5 zip codes · 7 neighborhoods
HVAC in Arvada -
Westminster, CO
30 minNorth metro coverage with same-day dispatch along US-36 and I-25.
Adams County · 5 zip codes · 7 neighborhoods
HVAC in Westminster -
Golden, CO
30 minThe west end of our map. Foothills service up to Genesee and Lookout Mountain, where winter is a different animal.
Jefferson County · 2 zip codes · 6 neighborhoods
HVAC in Golden -
Castle Rock, CO
30 minThe south end of our map. Castle Rock’s fast-growing neighborhoods get the same same-day service as central Denver.
Douglas County · 3 zip codes · 7 neighborhoods
HVAC in Castle Rock -
Thornton, CO
35 minThe north end of our map. Fast, friendly service across Thornton and the I-25 corridor.
Adams County · 6 zip codes · 7 neighborhoods
HVAC in Thornton
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.
Not on the list? Ask anyway.
We regularly reach Broomfield, Parker, Lone Tree, Commerce City, and Morrison. Enter your zip and we’ll tell you straight.