25 Best HVAC Contractors in Denver for 2026

❄️ 25 businesses · 📍 Denver, CO
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated May 4, 2026
Mark Reid
Written by Mark Reid, Home Services Editor · Verified May 4, 2026
Denver's high altitude and dramatic temperature swings create unique challenges for heating and cooling systems. Many homes here feature older furnaces that struggle with the thin air at 5,280 feet, while newer developments in areas like Stapleton and Lowry often have modern heat pumps that need specialized maintenance. The city's mix of historic bungalows, ranch-style homes, and contemporary builds means HVAC contractors need experience with everything from steam radiators to smart thermostats.

Every business listed here has been verified through Google reviews analysis, checking for consistent ratings above 4.0 stars and at least 20 customer reviews over recent months. We've confirmed active licenses through Colorado's Department of Regulatory Agencies and verified insurance coverage where publicly available. Trading history checks help ensure these aren't fly-by-night operations, though you should still verify credentials yourself before hiring.

Before calling any contractor, know your system's make, model, and age if possible. Take photos of error codes or unusual sounds to share during your consultation. Don't accept quotes over the phone without an in-person assessment, and always get written estimates that break down parts and labor costs. Multiple quotes aren't just smart for price comparison, they'll help you spot contractors who might be overselling unnecessary work.
How We Select & Rate The Best HVAC Contractors in Denver, CO

Our selection process analyzes Google ratings and review patterns over extended periods, focusing on contractors with sustained high ratings rather than recent spikes. We verify active trading status through business registrations and check professional licenses through state databases where applicable. Insurance coverage is confirmed when publicly available. This directory provides starting points for your research, not endorsements, so you should still verify credentials, get multiple quotes, and check references before hiring any contractor.

Quick Comparison — HVAC Contractors in Denver, CO

# Business Rating Reviews Phone
1 Applewood Plumbing Heating & Electric Recommended ⭐ 4.8 17,010 (303) 444-1633 View →
2 Absolute Plumbing, Electrical, Heating & Air Featured ⭐ 4.9 3,743 (720) 954-2939 View →
3 Golden West Plumbing, Heating, Air Conditioning, and Electrical Featured ⭐ 4.8 3,700 (303) 529-9771 View →
4 Heart Heating, Cooling, Plumbing & Electric Featured ⭐ 4.8 3,026 (720) 712-0649 View →
5 The Weather Changers Heating and Air Conditioning Featured ⭐ 5.0 1,286 (303) 340-0077 View →
6 Ultimate Heating, Cooling, Plumbing & Electric ⭐ 4.8 1,231 (720) 306-9245 View →
7 Salzano Electric ⭐ 5.0 378 (303) 276-1495 View →
8 Motili ⭐ 4.7 775 (800) 669-9656 View →
9 Roots Heating & Air ⭐ 5.0 274 (303) 381-3061 View →
10 Right Away Heating ⭐ 4.9 318 (720) 646-1962 View →
11 Time Plumbing, Heating & Electric Denver ⭐ 4.6 778 (303) 758-6237 View →
12 Action Air Duct Cleaning Denver ⭐ 4.9 256 (720) 257-3319 View →
13 Veteran Heating, Cooling, Plumbing & Electric ⭐ 4.9 233 (720) 594-6631 View →
14 Comfy Castle Heating and Air ⭐ 5.0 128 (303) 227-9999 View →
15 Precision Climate HVAC Service ⭐ 4.9 97 (720) 664-8310 View →
16 75 Degree Heating & Air ⭐ 5.0 68 (619) 333-7575 View →
17 Brown Brothers Plumbing and HVAC ⭐ 4.9 94 (720) 790-7371 View →
18 Steven & Sons Plumbing & HVAC ⭐ 4.9 91 (720) 730-9741 View →
19 Champs Heating & Air Conditioning ⭐ 5.0 62 (303) 847-8741 View →
20 One Line Electric Plumbing and HVAC ⭐ 4.9 83 (720) 984-7426 View →
21 Total Comfort HVAC Service ⭐ 4.8 100 (720) 586-4411 View →
22 Allegiance National HVAC ⭐ 5.0 42 (720) 837-0377 View →
23 Harmony HVAC Service ⭐ 4.8 79 (720) 605-7110 View →
24 All Weather HVAC Denver ⭐ 4.6 134 (720) 581-4049 View →
25 Steven & Sons Heating and Cooling ⭐ 5.0 33 (970) 405-6220 View →

Our Top Picks

6
Ultimate Heating, Cooling, Plumbing & Electric
4.8 (1,231 reviews)
Denver, CO (720) 306-9245 Website

Ultimate Heating, Cooling, Plumbing & Electric provides comprehensive HVAC, plumbing, and electrical services to Denver residents and businesses from their Broadway location. The company handles everything from air conditioning and heating system installations to plumbing repairs and electrical work. With a 4.8/5 star rating based on 1,231 verified customer reviews, they have built a solid reputation for reliable service in the Denver area.

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7
Salzano Electric
5.0 (378 reviews)
Denver, CO (303) 276-1495 Website

Salzano Electric provides professional electrical services to Denver residents and businesses from their downtown location on Stout Street. The company has earned a perfect 5-star rating from 378 verified Google reviews, reflecting their commitment to quality workmanship and customer satisfaction. Their licensed electricians handle residential and commercial electrical installations, repairs, and maintenance throughout the Denver area.

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8
Motili
4.7 (775 reviews)
Denver, CO (800) 669-9656 Website

Motili provides comprehensive HVAC services throughout the Denver area, operating from their downtown location on Wazee Street. The company maintains a strong reputation with customers, earning 4.7 out of 5 stars from 775 verified Google reviews. Their experienced technicians handle heating, ventilation, and air conditioning installations, repairs, and maintenance for residential and commercial properties in the 80202 area and surrounding neighborhoods.

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9
Roots Heating & Air
5.0 (274 reviews)
Denver, CO (303) 381-3061 Website

Roots Heating & Air provides comprehensive HVAC services including heating and cooling system installation, repair, and maintenance for Denver area residents and businesses. Located on Santa Fe Drive, this locally-owned company has earned a perfect 5-star rating from 274 verified customer reviews. Their certified technicians handle everything from furnace repairs and air conditioner tune-ups to complete system replacements throughout the Denver metro area.

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10
Right Away Heating
4.9 (318 reviews)
Denver, CO (720) 646-1962 Website

Right Away Heating provides comprehensive HVAC services to Denver residents and businesses from their Santa Fe Drive location in the 80223 area. The company handles heating system installations, repairs, and maintenance for both residential and commercial properties. With a 4.9-star rating from 318 verified customer reviews, they have built a strong reputation for reliable service throughout the Denver metro area.

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11
Time Plumbing, Heating & Electric Denver
4.6 (778 reviews)
Denver, CO (303) 758-6237 Website

Time Plumbing, Heating & Electric Denver provides comprehensive HVAC services including heating system installation, repair, and maintenance for residential and commercial properties throughout the Denver area. Located on W 6th Ave, the company has earned a solid reputation with a 4.6-star rating from 778 verified customer reviews. Their experienced technicians handle everything from furnace repairs to complete heating system replacements, serving customers across the 80204 area and surrounding Denver neighborhoods.

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12
Action Air Duct Cleaning Denver
4.9 (256 reviews)
Denver, CO (720) 257-3319 Website

Action Air Duct Cleaning Denver provides professional HVAC air duct cleaning services throughout the Denver area from their Fillmore Street location. The company maintains a 4.9/5 star rating based on 256 verified customer reviews, reflecting their commitment to thorough duct cleaning and improved indoor air quality. They serve residential and commercial clients in the 80206 area and surrounding Denver neighborhoods.

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13
Veteran Heating, Cooling, Plumbing & Electric
4.9 (233 reviews)
Denver, CO (720) 594-6631 Website

Veteran Heating, Cooling, Plumbing & Electric provides comprehensive HVAC, plumbing, and electrical services to Denver residents and businesses from their Brighton Boulevard location. The company maintains a 4.9-star rating from 233 verified customer reviews, reflecting their commitment to quality workmanship and reliable service. Their experienced technicians handle everything from routine maintenance and repairs to complete system installations across the Denver area.

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14
Comfy Castle Heating and Air
5.0 (128 reviews)
Denver, CO (303) 227-9999 Website

Comfy Castle Heating and Air provides comprehensive HVAC services throughout the Denver area, including installation, repair, and maintenance of heating and cooling systems. The company has earned a perfect 5-star rating from 128 verified customer reviews, reflecting their commitment to reliable service and customer satisfaction. Their experienced technicians handle everything from routine tune-ups to complete system replacements for residential and commercial properties.

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15
Precision Climate HVAC Service
4.9 (97 reviews)
Denver, CO (720) 664-8310 Website

Precision Climate HVAC Service provides heating, ventilation, and air conditioning services to Denver residents and businesses from their location on E Colfax Ave. The company maintains a 4.9/5 star rating based on 97 verified customer reviews, reflecting their consistent service quality. They serve the Denver area with comprehensive HVAC installation, repair, and maintenance solutions.

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16
75 Degree Heating & Air
5.0 (68 reviews)
Denver, CO (619) 333-7575 Website

75 Degree Heating & Air provides comprehensive HVAC services throughout Denver, specializing in heating and cooling system installation, repair, and maintenance for residential and commercial properties. The company has earned a perfect 5-star rating from 68 verified customer reviews, reflecting their commitment to reliable service and customer satisfaction. Located in the 80202 area, they serve the greater Denver community with professional climate control solutions.

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17
Brown Brothers Plumbing and HVAC
4.9 (94 reviews)
Denver, CO (720) 790-7371 Website

Brown Brothers Plumbing and HVAC provides comprehensive heating, ventilation, and air conditioning services to Denver residents and businesses from their Broadway location. The company has earned a strong reputation with a 4.9-star rating from 94 verified customer reviews. Their experienced technicians handle installation, repair, and maintenance of HVAC systems throughout the Denver area.

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18
Steven & Sons Plumbing & HVAC
4.9 (91 reviews)
Denver, CO (720) 730-9741 Website

Steven & Sons Plumbing & HVAC provides comprehensive heating, ventilation, and air conditioning services to Denver residents and businesses from their Corona Street location. The company maintains an exceptional 4.9-star rating based on 91 verified customer reviews, reflecting their commitment to quality workmanship and reliable service. They serve the greater Denver area with professional HVAC installation, repair, and maintenance solutions.

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19
Champs Heating & Air Conditioning
5.0 (62 reviews)
Denver, CO (303) 847-8741 Website

Champs Heating & Air Conditioning provides comprehensive HVAC services including heating system installation, air conditioning repair, and maintenance throughout the Denver area. The company has earned a perfect 5-star rating from 62 verified customer reviews, reflecting their commitment to reliable service and customer satisfaction. Their experienced technicians handle both residential and commercial heating and cooling needs for Denver-area property owners.

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20
One Line Electric Plumbing and HVAC
4.9 (83 reviews)
Denver, CO (720) 984-7426 Website

One Line Electric Plumbing and HVAC provides comprehensive heating, ventilation, and air conditioning services throughout the Denver area. The company operates from their Pennsylvania Street location in the 80203 area, offering both residential and commercial HVAC solutions. With a 4.9-star rating from 83 verified customer reviews, they have built a strong reputation for reliable service in the Denver community.

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21
Total Comfort HVAC Service
4.8 (100 reviews)
Denver, CO (720) 586-4411 Website

Total Comfort HVAC Service provides heating, ventilation, and air conditioning services to Denver residents and businesses from their location on 30th Street. The company has earned a 4.8/5 star rating from 100 verified customer reviews, reflecting their commitment to reliable HVAC repairs, installations, and maintenance. They serve the Denver area with comprehensive climate control solutions for both residential and commercial properties.

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22
Allegiance National HVAC
5.0 (42 reviews)
Denver, CO (720) 837-0377 Website

Allegiance National HVAC provides comprehensive heating, ventilation, and air conditioning services throughout the Denver area. The company has earned a perfect 5-star rating from 42 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction. Their experienced technicians handle installation, repair, and maintenance of residential and commercial HVAC systems.

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23
Harmony HVAC Service
4.8 (79 reviews)
Denver, CO (720) 605-7110 Website

Harmony HVAC Service provides heating, ventilation, and air conditioning services to Denver residents and businesses from their location on W 29th Ave. The company maintains a strong 4.8/5 star rating based on 79 verified customer reviews. Their services cover installation, repair, and maintenance of HVAC systems throughout the Denver area.

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24
All Weather HVAC Denver
4.6 (134 reviews)
Denver, CO (720) 581-4049 Website

All Weather HVAC Denver provides heating, ventilation, and air conditioning services for residential and commercial properties throughout the Denver area. Located on Delaware Street, the company maintains a strong reputation with a 4.6/5 star rating from 134 verified customer reviews. Their services include HVAC installation, repair, and maintenance to keep Denver homes and businesses comfortable year-round.

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25
Steven & Sons Heating and Cooling
5.0 (33 reviews)
Denver, CO (970) 405-6220 Website

Steven & Sons Heating and Cooling provides HVAC installation, repair, and maintenance services to Denver residents and businesses from their Lincoln Street location in the 80216 area. The family-owned company has earned a perfect 5-star rating from 33 verified Google reviews, reflecting their commitment to reliable heating and cooling solutions. Their experienced technicians handle everything from routine system maintenance to emergency repairs and new equipment installations.

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Transparency notice: Recommended (#1) and Featured (positions 2–5) listings are paid placements. All other rankings are determined by a combined score drawn from Google ratings, review counts, and reputation signals gathered from multiple independent online sources. How we verify →

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Frequently Asked Questions

How much does a hvac cost in Denver?
HVAC costs in Denver vary widely depending on the job. Basic furnace tune-ups run $150-$300, while emergency repairs typically cost $350-$800. New furnace installations range from $3,500-$8,000 for standard units, with high-efficiency models reaching $12,000. Air conditioning installations cost $4,000-$10,000 depending on your home's size and existing ductwork. Denver's altitude can affect equipment performance, sometimes requiring specialized components that cost more. Always get two or three written quotes to compare pricing and recommendations.
Do I need special HVAC equipment because of Denver's altitude?
Denver's 5,280-foot elevation does affect HVAC performance, but most modern equipment is designed to handle it. Gas furnaces may need altitude adjustments for proper combustion, and some contractors replace standard orifices with high-altitude ones. Heat pumps can lose efficiency in extreme cold, which is why many Denver homes use backup electric heat or dual-fuel systems. Your contractor should understand these altitude considerations and recommend appropriate equipment for our climate.
How often should I service my HVAC system in Denver?
Denver's temperature extremes and dry air mean your HVAC system works harder than in milder climates. Schedule furnace maintenance every fall before heating season, and air conditioning service every spring. Change filters every 1-3 months depending on your system and air quality. The city's frequent weather changes and dust storms can clog filters faster than normal, so check them monthly during heavy-use seasons.
What HVAC issues are common in Denver homes?
Dry air is the biggest issue, causing static electricity, cracked woodwork, and respiratory discomfort. Many homeowners add whole-house humidifiers to combat this. Older homes often have undersized ductwork or poor insulation that makes systems work overtime. Altitude can cause gas pressure issues in furnaces, leading to incomplete combustion or frequent cycling. Ice dams from heavy snow can block exhaust vents, creating safety hazards that require immediate attention.
Should I repair or replace my old furnace?
If your furnace is over 15 years old and repair costs exceed half the replacement price, it's usually time to replace. Denver's utility rebates can offset $600-$1,500 of new high-efficiency equipment costs. Consider replacement if you're facing frequent repairs, uneven heating, or dramatically higher energy bills. Newer furnaces handle Denver's altitude better and often include features like variable-speed blowers that improve comfort and efficiency.
How do I verify an HVAC contractor's credentials?
Check the contractor's license through Colorado's Department of Regulatory Agencies website using their business name or license number. Verify insurance coverage by asking for a certificate of insurance that names you as additional insured for the work period. Look up Better Business Bureau ratings and check recent Google reviews for patterns of complaints. Ask for local references from jobs completed in the past year, and don't hire anyone who can't provide proper licensing documentation.