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14 Best HVAC Companies in Denver

Denver HVAC companies cover very different needs, from a failing furnace or air conditioner to heat-pump upgrades, duct problems, thermostat projects, and whole-system replacement. The best choice depends on the job’s scope and the advice you need before work begins.

Compare contractors by the equipment involved, whether plumbing or electrical work is also required, how clearly they explain repair versus replacement, and how soon the property needs attention.

How this guide is ordered

This list of HVAC companies in Denver comes from checking each business's expertise, its customer ratings and its contact information.

Certain businesses pay to appear in more visible positions.

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#1
The Weather Changers Heating and Air Conditioning
5.01,353 reviews
AC installation and repairOngoing property maintenance
#2
Comfort Pros Heating and Air Conditioning
5.0654 reviews
Heat-pump installationWhole-system replacement
#3
Apex Clean Air AC & Heating Repair
4.92,190 reviews
Heat-pump installationDuct and airflow problems

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Compare 14 local options

The Weather Changers Heating and Air Conditioning, Denver#1
What stands out

  • Clear scheduling and arrival updates

The Weather Changers Heating and Air Conditioning

5.01,353 reviews
10525 E 40th Ave #203, Denver, CO 80239, United States
Best for
AC installation and repairOngoing property maintenance

The Weather Changers Heating and Air Conditioning serves Denver with air-conditioning repair, maintenance, installation, and broader heating and cooling support. The company’s approach is especially well suited to homeowners who want the problem explained clearly before deciding between repair, replacement, or ongoing service. Estimates can be discussed openly, and payment-plan options may help with larger work.

Scheduling is handled with clear communication, including arrival updates and tighter confirmation windows. Technicians are described as efficient, respectful, knowledgeable, and careful about leaving the work area clean. The team also supports ongoing service for multiple properties and can handle new system installations as well as seasonal maintenance.

Comfort Pros Heating and Air Conditioning, Denver#2
What stands out

  • Strong heat-pump and furnace focus

Comfort Pros Heating and Air Conditioning

5.0654 reviews
7270 Gilpin Way #220, Denver, CO 80229, United States
Best for
Heat-pump installationWhole-system replacement

Comfort Pros Heating and Air Conditioning is a Denver HVAC contractor focused on furnaces, air conditioning, heat pumps, replacements, repairs, and indoor comfort. The company brings more than 40 years of combined industry experience and has served the local community for more than 15 years, with particular strength in heat-pump and furnace work.

Its process is notable for careful walkthroughs, tailored system recommendations, and clear explanations before installation is complete. Crews work respectfully inside the home, keep the area clean, and help homeowners navigate available rebates and discounts. The scheduling team also works to accommodate demanding appointments, including weekend visits when needed.

Apex Clean Air AC & Heating Repair, Denver#3
What stands out

  • Detailed diagnostics and ductwork care

Apex Clean Air AC & Heating Repair

4.92,190 reviews
6401 Broadway Unit L, Denver, CO 80221, United States
Best for
Heat-pump installationDuct and airflow problems

Apex Clean Air AC & Heating Repair provides Denver homeowners with HVAC diagnostics, furnace and heat-pump installation , repairs, duct cleaning, and indoor air-quality support. Its diagnostic approach centres on identifying the underlying issue and explaining the options clearly, which is useful when airflow, comfort, or system performance has changed.

The team also handles complex installations, including ductless heat pumps and challenging attic work, with attention to clean finishing. Technicians are described as thorough, professional, and willing to work within a defined budget. Apex serves the wider Colorado region as part of a broader heating and cooling operation.

Lou’s Heating & Cooling, Denver#4
What stands out

  • Owner-operated, diagnosis-first service

  • Flat-rate repair pricing

Lou’s Heating & Cooling

5.0364 reviews
1880 S Pierce St #5, Lakewood, CO 80232, United States
Best for
AC and furnace repairsHomeowners seeking direct advice

Lou’s Heating & Cooling is a family-owned HVAC contractor serving Denver and the surrounding metro area with AC repair, furnace repair, swamp-cooler service , maintenance, installation, and emergency assistance. The company’s owner-operated model keeps the service personal, with direct explanations, prompt communication, and a diagnosis-first approach rather than automatically steering homeowners toward replacement.

Flat-rate pricing is used for repair work, with the cost established before work begins. Technicians are described as efficient, tidy, knowledgeable, and willing to explain the reasoning behind a recommendation. That combination makes Lou’s particularly useful for homeowners who want a straightforward repair assessment or a carefully planned AC addition.

Heart Heating, Cooling, Plumbing & Electric, Denver#5
What stands out

  • HVAC, plumbing, and electrical under one team

  • Careful explanations and tidy work

Heart Heating, Cooling, Plumbing & Electric

4.83,235 reviews
646 Bryant St, Denver, CO 80204, United States
Best for
Multi-trade home projectsAC inspection and repair

Heart Heating, Cooling, Plumbing & Electric provides Denver homeowners with air-conditioning repair alongside heating, plumbing, and electrical services. Its HVAC work includes thorough inspections, system cleaning, furnace support, and practical guidance on repair or replacement. The wider service offering is useful when one project involves connected home systems, such as heating equipment, water lines, or an EV charger.

Technicians are known for patient explanations, tidy work areas, and careful attention to safety issues. Service is organized around identifying the problem, discussing suitable options, and completing the work efficiently without unnecessary pressure.

Ultimate Heating, Cooling, Plumbing & Electric, Denver#6
What stands out

  • Broad HVAC and indoor-air services

Ultimate Heating, Cooling, Plumbing & Electric

4.81,246 reviews
4321 Broadway Unit 3, Denver, CO 80216, United States

Ultimate Heating, Cooling, Plumbing & Electric is a Denver home-services company covering HVAC, indoor air quality, plumbing, and electrical work. Its heating and cooling projects include system upgrades, heat pumps, furnaces, and air conditioning, while indoor-air services address testing and whole-home purification needs suited to Denver’s dry climate and seasonal smoke or allergen concerns.

Installation crews are described as organized, communicative, and careful about maintaining a clean workspace. The company’s wider service model can be useful when a comfort project extends beyond one appliance, with transparent pricing and follow-up support built into the process.

Steel T | Denver HVAC#7
What stands out

  • Clear guidance on modern HVAC technology

  • Family-owned multi-trade service

Steel T | Denver HVAC

4.8954 reviews
2750 S Shoshone St, Englewood, CO 80110, United States
Best for
Heat-pump and thermostat projectsPlanned HVAC installation

Steel T Home Services is a family-owned Denver HVAC contractor handling heating, air conditioning, maintenance, installation, indoor air quality, and thermostat-related work. The team also provides plumbing and electrical services, making it a possible single point of coordination for broader home upgrades. Online estimates and on-site consultations support both planned installations and repair decisions.

Technicians are particularly effective at explaining newer systems, including heat pumps and smart controls, in accessible language. Service is organized and clean, with careful troubleshooting, detailed installation work, and attention to the homeowner’s questions throughout the project.

Roots Heating & Air, Denver#8
What stands out

  • Thorough system comparisons and installations

  • Reliable emergency HVAC support

Roots Heating & Air

5.0303 reviews
840 Santa Fe Dr, Denver, CO 80204, United States
Best for
Furnace or AC replacement

Roots Heating & Air is a Denver HVAC contractor focused on furnace and air-conditioning installation, replacement, repair, maintenance, and emergency service. The company is a strong fit for homeowners comparing major system work, with thorough estimates, clear explanations of available options, and crews experienced in coordinating heating, cooling, electrical adjustments, and related equipment.

Scheduling and installation are handled with an emphasis on punctuality, tidy workmanship, and efficient completion. Roots is also useful when a second opinion is needed before replacing an older system, particularly for homeowners who want a careful assessment rather than an automatic upsell.

Major Heating and Air Conditioning, Denver#9
What stands out

  • Commercial HVAC and geothermal expertise

  • Clear residential repair explanations

Major Heating and Air Conditioning

4.9459 reviews
6285 W 48th Ave, Wheat Ridge, CO 80033, United States
Best for
Commercial HVAC systemsGeothermal or major replacements

Major Heating and Air Conditioning serves Denver with residential and commercial HVAC repair, installation, maintenance, air conditioning, heating, and geothermal solutions. Its commercial capabilities extend to complex systems such as rooftops, chillers, boilers, cooling towers, controls, and building automation, making the company especially relevant for facility managers and larger properties.

For residential work, technicians are valued for explaining diagnoses clearly, answering detailed questions, and completing repairs efficiently. The company also provides free installation estimates, financing options, upfront pricing, and background-checked employees, helping homeowners plan replacements with greater clarity.

Sanders & Johnson Heating, Cooling, and Plumbing, Denver#10
What stands out

  • Thorough, tidy HVAC service

Sanders & Johnson Heating, Cooling, and Plumbing

4.8820 reviews
7100 Broadway #7K, Denver, CO 80221, United States
Best for
Heat pump installationAC and furnace repairs

Sanders & Johnson Heating, Cooling, and Plumbing provides residential HVAC and plumbing services across Denver, with installation, repair, maintenance, and on-site support. The team handles air conditioning, heating, heat pumps, evaporative coolers, indoor air quality solutions, and related comfort improvements.

Its approach emphasizes organized installations, careful cleanup, clear explanations, and practical recommendations before suggesting replacement. Online estimates are available, and heat pump installation is a recognized area of expertise. The company’s service history in the Denver area stretches back more than four decades.

Right Away Heating, Denver#11
What stands out

  • Responsive, no-pressure diagnosis

Right Away Heating

4.9337 reviews
340 Santa Fe Dr, Denver, CO 80223, United States
Best for
Emergency heating repairsHeat pump or furnace replacement

Right Away Heating & Cooling serves Denver with heating and cooling installation, repairs, maintenance, and emergency HVAC support. Its technicians work on furnaces, boilers, heat pumps, and major system replacements, with safety checks and clear explanations built into the process.

The company’s service style is notably responsive and organized, from last-minute assistance to neatly completed boiler and plumbing work. It also helps homeowners compare repair and replacement options without pressure, making it a useful fit when a system needs prompt diagnosis or a carefully planned upgrade.

Premier Heating and Air, Denver#12
What stands out

  • Detailed Bryant system guidance

  • Long-term replacement coverage

Premier Heating and Air

4.71,624 reviews
8000 E Prentice Ave Ste C5, Greenwood Village, CO 80111, United States

Premier Heating and Air provides residential heating and cooling installation, repair, and maintenance for Denver and the surrounding metro area. The team works with furnace and air-conditioning replacements, including energy-efficient Bryant heat pump systems, and takes time to explain equipment choices, costs, and expected benefits.

Professional technicians are described as careful and knowledgeable during installations, with a focus on getting systems properly set up and answering questions along the way. The company also advertises finance options, a 10-year parts-and-labor warranty, and a best-value guarantee for comparable estimates.

Applewood Plumbing Heating & Electric, Denver#13
What stands out

  • Plumbing, HVAC, and electrical repairs

  • Detailed repair explanations

Applewood Plumbing Heating & Electric

4.817,712 reviews
5000 W 29th Ave, Denver, CO 80212, United States
Best for
Homeowners coordinating several repair trades

Applewood Plumbing Heating & Electric serves Denver homeowners with plumbing, drain cleaning, heating, cooling, and electrical repair. The team handles problems ranging from clogged or damaged drain lines to household electrical projects, with on-site service designed around practical home repairs.

Clear explanations are a defining part of the service. Technicians are known for discussing repair options, expected timing, and pricing in understandable terms, while dispatch follow-up and tidy workmanship add structure to larger or more disruptive jobs.

Squeaks Services Plumbing Heating & Air - Denver#14
What stands out

  • Clear explanations across plumbing and HVAC

  • Same-day home-comfort service

Squeaks Services Plumbing Heating & Air - Denver

4.81,981 reviews
4620 E Colfax Ave, Denver, CO 80220, United States
Best for
Plumbing and HVAC repairs togetherWater-heater or heat-pump work

Squeaks Services Plumbing Heating & Air provides Denver plumbing, heating, and cooling work, from shower-leak repairs and water-heater replacement to heat-pump and air-conditioning service. The team’s approach is notably explanatory: technicians walk through the problem, outline the available options, and check that the system is working properly before leaving.

Same-day service and fast response support urgent home-comfort needs, while tidy completion and clear updates make the process easier to follow. The family-owned company also handles routine maintenance and larger system replacements.

Summary

The comparison at a glance

#BusinessRatingReviewsBest for
#1The Weather Changers Heating and Air Conditioning 5.01,353AC installation and repair
#2Comfort Pros Heating and Air Conditioning 5.0654Heat-pump installation
#3Apex Clean Air AC & Heating Repair 4.92,190Heat-pump installation
#4Lou’s Heating & Cooling 5.0364AC and furnace repairs
#5Heart Heating, Cooling, Plumbing & Electric 4.83,235Multi-trade home projects
#6Ultimate Heating, Cooling, Plumbing & Electric 4.81,246—
#7Steel T | Denver HVAC 4.8954Heat-pump and thermostat projects
#8Roots Heating & Air 5.0303Furnace or AC replacement
#9Major Heating and Air Conditioning 4.9459Commercial HVAC systems
#10Sanders & Johnson Heating, Cooling, and Plumbing 4.8820Heat pump installation
#11Right Away Heating 4.9337Emergency heating repairs
#12Premier Heating and Air 4.71,624—
#13Applewood Plumbing Heating & Electric 4.817,712Homeowners coordinating several repair trades
#14Squeaks Services Plumbing Heating & Air - Denver 4.81,981Plumbing and HVAC repairs together

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Map and areas

Map of HVAC companies in Denver

HVAC coverage can vary by contractor and by the equipment installed at your property, so a nearby company is not automatically the right match. Denver homeowners may need a focused repair specialist, a replacement team, or a contractor able to coordinate several trades. Before scheduling, confirm that the company serves your address and handles your specific system. For urgent loss of heating or cooling, ask about the earliest diagnostic visit; for planned work, allow time for an on-site assessment and written options.

Services to compare

  • AC installation and repairContractors in this guide cover cooling-system diagnostics, repairs, and installation when an air conditioner is unreliable or due for replacement.
  • Heat-pump installationHeat-pump specialists can help evaluate a conversion or new installation, including how the equipment should operate across Denver’s seasonal conditions.
  • Whole-system replacementReplacement-focused companies can assess an aging setup and explain whether changing the full system makes more sense than repairing one component.
  • Duct and airflow workAirflow-focused service addresses rooms that heat or cool unevenly, restricted distribution, and duct-related performance concerns.
  • Indoor air-quality concernsSome contractors can discuss equipment or corrective work related to indoor air quality rather than treating temperature alone.
  • AC and furnace repairsRepair services can investigate faults affecting either cooling or heating, helping homeowners decide what requires immediate attention.
  • Swamp-cooler serviceLou’s Heating & Cooling is associated with swamp-cooler service for homes using evaporative cooling rather than a conventional AC setup.
  • Multi-trade home projectsCompanies combining HVAC with plumbing or electrical capabilities may simplify projects where equipment work overlaps with other home systems.

How to choose HVAC companies in Denver

  1. Describe the exact failureRecord which system is affected, what it does when switched on, unusual sounds, error codes, and the rooms involved before requesting a diagnostic visit.
  2. Request repair and replacement pathsAsk the technician to separate the immediate repair from the longer-term replacement option, including expected service life, compatible equipment, and work excluded from each proposal.
  3. Check heat-pump scopeFor a heat-pump project, ask whether the quote includes sizing, electrical requirements, thermostat compatibility, backup heat, removal, and commissioning.
  4. Investigate airflow symptomsWhen rooms differ in temperature, ask whether the contractor will inspect ducts, registers, static pressure, insulation, and balancing rather than simply increasing equipment size.
  5. Clarify the written estimateCompare labor, equipment model, permits, warranty coverage, disposal, follow-up visits, and payment stages so two proposals describe the same completed job.
  6. Ask about scheduling urgencyIf heating or cooling has stopped, request the earliest diagnostic appointment and ask what safe temporary steps are appropriate while waiting.

Frequently asked questions

Which Denver HVAC companies handle heat pumps?

Comfort Pros Heating and Air Conditioning, Apex Clean Air AC & Heating Repair, and Steel T are associated with heat-pump work in this comparison. Ask each contractor about sizing, electrical needs, thermostat compatibility, and the full installation scope.

What should I do if my home has duct or airflow problems?

Describe the rooms affected and when the imbalance occurs, then ask for a duct and airflow diagnosis rather than only an equipment recommendation. The assessment should address distribution, restrictions, pressure, and possible insulation issues.

Can one company handle HVAC plus plumbing or electrical work?

Heart Heating, Cooling, Plumbing & Electric and Ultimate Heating, Cooling, Plumbing & Electric are associated with broader multi-trade services. Confirm which parts will be performed directly, how the work is coordinated, and whether separate estimates are provided.

When should I repair instead of replace an AC or furnace?

Ask for both options after the technician identifies the failed component, the system’s age, likely future repairs, efficiency implications, and compatibility with your home. A written comparison is more useful than choosing from a single verbal recommendation.

Do Denver HVAC companies service swamp coolers?

Lou’s Heating & Cooling is associated with swamp-cooler service. Before booking, confirm that the contractor works on your specific evaporative system, handles the current fault, and can advise whether seasonal maintenance or a larger correction is needed.

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