UniColorado is a residential HVAC contractor in Denver, Colorado with 3,500+ installations since 2014 - from Highlands bungalows to RiNo lofts to Park Hill ranches. Licensed in the city and county of Denver (#2020 1864747 00 CL), we handle furnace installation, AC installation, heat pump systems, and ductless mini-splits, with every system designed for Mile High altitude and your home's specific needs.
UniColorado has been one of the leading HVAC companies in Denver, Colorado since we opened in 2014, and the city's range of homes - from 800 sq ft Capitol Hill apartments to 4,000+ sq ft Park Hill colonials to brand-new builds in Central Park - is what shaped how we work. We've done heavy volume in neighborhoods like Highlands, Wash Park, Congress Park, Park Hill, Harvey Park, and RiNo, so we know the duct systems, the construction eras, and the quirks specific to each part of the city. That experience matters when you're quoting a job: a 1940s bungalow in Wash Park and a 2005 build in Green Valley Ranch need completely different approaches, and we don't run the same playbook on both.
As Denver HVAC contractors, we pull permits through the City and County of Denver for every installation and coordinate directly with Denver's building department on required inspections. Denver has its own building department - separate from Arapahoe County, Jefferson County, or any of the surrounding suburbs - and it operates on its own inspection schedule. There are no workarounds on this: unpermitted HVAC work creates title problems and voids manufacturer warranties.
The altitude adjustment is also something many out-of-state or suburban heating and cooling contractors miss. At 5,280 feet, equipment doesn't perform at its rated sea-level capacity, and furnace combustion is measurably less efficient. Whether it's a central air installation, furnace replacement, or full heat pump conversion, we've been sizing residential HVAC systems for Denver's elevation since day one - which means fewer callbacks and equipment that actually matches the load it's supposed to handle.
BBB A+ Rated
NATE Certified
Mitsubishi Diamond
Local HVACConsiderations
HVAC Challenges Unique to Denver
5,280 ft elevation
Altitude-Adjusted Manual J Calculations: Standard sea-level HVAC sizing tables will leave a Denver home either undersized or inefficient. At 5,280 feet, air is roughly 17% less dense than at sea level, which reduces both AC capacity and gas furnace combustion efficiency. We run altitude-corrected Manual J calculations on every project, accounting for Denver's specific solar radiation index, envelope tightness, and the actual performance curves of the equipment we're installing - not generic contractor rules of thumb.
Extreme Temperature Swings Demand Flexible Equipment: Denver's Front Range weather is genuinely extreme - January lows averaging 15-20°F, summer highs pushing 95°F, and Chinook wind events that can raise outdoor temps 30-40 degrees in a matter of hours. Single-stage conventional equipment struggles with these swings. We recommend cold-climate heat pumps (rated to -13°F or lower) for all-electric homes, or dual-fuel hybrid systems pairing a heat pump with a gas furnace for homes that need the gas backup during extended cold snaps.
Winter Humidification is Not Optional: Denver's winter relative humidity regularly drops to 15-20% indoors without active humidification. At that level, hardwood floors gap and crack, static electricity becomes constant, and 68°F feels genuinely cold because dry air draws heat from skin faster. We integrate whole-home bypass or steam humidifiers into every furnace installation, targeting a 35-45% indoor RH range. Most manufacturers now void warranties on variable-speed furnaces installed without a humidifier in dry climates.
Historic Ductwork Limitations Require a Plan Before Permit: Older Denver neighborhoods - Park Hill, Wash Park, Highlands, Capitol Hill - frequently have gravity heating ducts, unlined flex duct added in the 1970s, or no duct system at all. Static pressure in these systems often runs 0.6-0.8" WC when modern high-efficiency equipment expects 0.3-0.5" WC. We measure existing ductwork airflow during every estimate and include any required duct modifications in the quoted price. If ductwork can't be made to work, we scope a Mitsubishi ductless or Bosch high-velocity solution instead.
Local Climate
Denver sits at exactly 5,280 feet, and that elevation has a direct, measurable effect on HVAC equipment: AC systems derate 10-15% compared to sea-level ratings, meaning a 3-ton unit rated at sea level performs like roughly 2.65 tons here - so undersizing is a real risk if your contractor doesn't account for it. Denver's semi-arid climate averages just 15 inches of annual precipitation, which keeps relative humidity in the 15-20% range through winter, well below the 35-45% threshold where wood floors, respiratory systems, and comfort all start to suffer. Add 300+ days of high-altitude sunshine and the solar heat gain on south- and west-facing rooms is substantial, driving up cooling loads that standard load calculations miss. And Chinook wind events can swing outdoor temperatures 40 degrees in under two hours - from 10°F to 50°F - which is exactly why dual-fuel and cold-climate heat pump systems are better matched to Denver than standard single-stage equipment.
Enter your ZIP.
ZIP Codes We Serve in Denver
Full service areaExtended coverage
41 ZIP codes in Denver service area
Why ChooseUniColorado
Your Trusted Denver HVAC Experts
1
Licensed in Denver: We hold HVAC license #2020 1864747 00 CL, issued by the City and County of Denver. Every installation includes required permits and inspections through Denver's own building department - not suburban county offices.
2
Deep neighborhood experience: Since 2014, we've worked extensively in Highlands, Wash Park, Park Hill, Congress Park, Harvey Park, RiNo, LoHi, Capitol Hill, Central Park, Green Valley Ranch, and University Hills. We know the housing stock in each area and what problems tend to show up.
3
Altitude-adjusted Manual J sizing: At 5,280 ft, equipment derates 10-15% from sea-level ratings. We run elevation-corrected load calculations on every project - not estimates scaled from suburban or sea-level baselines.
4
Rebate stacking: Denver residents served by Xcel Energy can combine Xcel HVAC rebates (up to $6,600) with HEAR program funding for income-qualified households (up to $14,000). We handle the paperwork for both programs.
5
Multi-brand approach: We're certified dealers for Mitsubishi, Carrier, and Bosch - three brands that each solve different problems. Older Denver homes with no ductwork get Mitsubishi hyper-heat mini-splits. Conventional replacements often go Carrier Infinity. Whole-home electrification projects are frequently best-served by Bosch. We recommend based on your home, not inventory.
6
Based in Denver: We're not a suburban company covering Denver as a satellite territory. Denver is where we're based and where most of our work happens, which means realistic scheduling and no mileage surcharges.
Your SatisfactionIs Guaranteed
Our Denver Homeowners Love Us
We're proud to consistently achieve 100% homeowner satisfaction. That's the UniCo way.
5.0Google Reviews (138)
Chastity O.
My mother debra was a customer of theirs. They did an amazing job. My mom feels they were so hood to her. They were professional and supportive even when problems did arise. She appreciates all you did for her. She would recommend yall to anyone!!
Google Review
Kyle M.
Aydin and team were absolutely fantastic. The install was efficient and smooth. By far the best value that we received quotes for.
Google Review
Michael M.
Afshin and Aydin were great to work with! The whole process from solution design through installation went smoothly, all at a fair price. They were always responsive and the job finished on time. Couldn't recommend more.
Google Review
Recent WorkDenver
Recent Projects in Denver
Real installations we've completed for Denver homeowners.
Heat Pump InstallationNovember 2025
Washington Park, Denver
Replaced 25-year-old gas furnace with Bosch IDS Ultra heat pump. 2,400 sq ft 1920s bungalow. Achieved full heating coverage down to -15°F.
Mini-Split SystemSeptember 2025
RiNo, Denver
4-zone Mitsubishi system for converted warehouse loft. No existing ductwork. Each zone with independent temperature control.
AC ReplacementAugust 2025
Park Hill, Denver
Carrier Infinity 19VS variable-speed AC replacing failed 15-year-old unit. 1960s ranch, existing ductwork in good condition.
Furnace ReplacementJanuary 2026
Central Park (Stapleton), Denver
Full system replacement on a 2015 Goodman that failed at 10 years - a common outcome with builder-grade equipment. Installed Carrier 98% AFUE variable-speed furnace with whole-home humidifier. Home is a 2,200 sq ft two-story with intact ductwork that only needed minor sealing.
Ductless Mini-SplitOctober 2025
Capitol Hill, Denver
3-zone Mitsubishi hyper-heat system for an 1,100 sq ft 1905 Victorian apartment. No viable path for ductwork without major renovation. Wall-mount heads in the living room, primary bedroom, and office. System handles both heating and cooling, replacing window units and baseboard electric heat.
Denver, Colorado's capital city, was established in 1861 following the discovery of gold. Defined by the backdrop of the Rocky Mountains, 300 days of sunshine, and a mile-high elevation, Denver serves as a hub for transportation, industrial, and commercial business and is at the center of high-technology industries as the largest city between the Missouri River and the West Coast in the present-day. Combining modernity with an ode to its old Western history, Denver's unique city offerings include over 200 parks as part of the nation's most unique natural parks system, a National Western Stock Show, a mint that produces 10 billion coins per year, six professional sports teams, three universities, a river offering whitewater rafting, and golf courses that are open year-round. Denver's population has grown to approximately 715,000 residents within city limits, with the metro area reaching nearly 3 million, and that sustained growth - combined with an aging housing stock and a construction boom in neighborhoods like Central Park, RiNo, and LoHi - has driven consistent demand for HVAC upgrades and replacements across virtually every part of the city.
