01
Furnace & heating repair
No heat, short cycling, strange smells or noises. Same-day and 24-hour.
Comfort
Zone.
Family-owned heating and cooling for Denver homes. Same-day repairs and a real person on the phone at any hour.
4.8★ on Google
NATE-certified
24-hour emergency
Licensed · Bonded · Insured
2:04 a.m. · Inside, 51°
The furnace quit. The snow didn't.
Frost on the inside of the glass. Kids under three blankets. This is the call we are here for.
2:09 a.m. · A real person answers
One call, any hour.
24-hour emergency service. No voicemail maze, no call-back tomorrow.
Call (720) 780-11402:47 a.m. · In your driveway
A local crew, not a call center.
Family-owned, based on South Colorado Boulevard, with NATE-certified technicians on the road.
3:30 a.m. · Burners lit
Fixed right, the first time.
Licensed, bonded and insured. The house starts to breathe warm again.
7:16 a.m. · Sunrise over the Front Range
Back to seventy-two.
Warm windows, a quiet furnace and a family that slept in.
July · 94° outside
Seventy-two. Every season.
The same crew keeps your AC cold when Denver bakes. Same-day heating and cooling, summer or January.
Book serviceWhy Denver calls us
A local crew that answers at 2 a.m.
Comfort Zone HVAC Service is a family-owned heating and cooling company on South Colorado Boulevard. Our NATE-certified technicians bring fast, reliable same-day and emergency service to Denver and the neighborhoods around it.
24/7Emergency service
Same dayRepairs and visits
48 miService radius from 80222
4.8★On Google reviews
Licensed · Bonded · Insured
NATE-certified technicians
Family-owned
Denver Society · #1 ranked heating & cooling
24-hour emergency service
No heat? No AC? We pick up.
Furnaces fail on the coldest night and air conditioners quit on the hottest day. Call any hour and a certified technician is on the way, with the parts Denver systems need.
- Same-day repairs for furnaces, AC units and heat pumps
- NATE-certified technicians who fix it right the first time
- Homes and businesses across a 48-mile radius of Denver
Answering calls 24/7
Services
Warm in January. Cool in July.
From a furnace that won't light to a brand-new central AC system, one team handles the whole house.
02
AC repair & refrigerant
Warm air, frozen coils, leaks or a unit that won't start.
03
New AC installation & replacement
Sized for your home and Denver's dry summers. Out with the old unit, in with an efficient one.
04
Heat pump services
Install, repair and maintenance for year-round heating and cooling.
05
Thermostats & zoning
Smart thermostat upgrades and zoning so every room sits where you like it.
06
Duct cleaning & indoor air
Duct cleaning, air filtration and UV sanitizers for cleaner air at home.
Also:Air handler serviceSeasonal tune-upsDuct installation & repairVentilationEnergy efficiency auditsCommercial HVAC
Reviews
4.8
Average rating across 18 Google reviews from Denver homeowners.
- ResponseSame-day and emergency
- TechniciansNATE-certified
- CoverageDenver and nearby areas
- OwnershipFamily-owned, local
Get comfortable
Too hot? Too cold? Call now.
Tell us what's going on. We'll get a certified technician to your door, day or night.
(720) 780-1140