Best HVAC Companies in Denver, Colorado

AMD Plumbing and Excavation earns a 4.8‑star rating from six customers, highlighting reliable emergency plumbing, pipe repairs, and sewer‑excavation services. With a decade of experience, the firm offers warranties, credit‑card payment, and transparent pricing, earning praise for prompt, knowledgeable work and clear communication and friendly customer service throughout the project.

Hartzell Heating & Air provides 20+ years of Colorado HVAC service, including heat‑pump, AC, furnace installation and maintenance. EPA, NATE and Rheem certified, BBB‑rated, and a 2025 top‑3 Aurora AC contractor. Reviews note thorough, prompt work and clear pricing. Free estimates and Colorado HEAR heat‑pump rebates offered for homeowners today.

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Peak HVAC offers same‑day air conditioning installation across the Denver metro, using certified technicians to size and fit high‑efficiency units. Services include old‑unit removal, single‑day setup, free consultation, and warranty coverage. Customer reviews note prompt response, accurate diagnostics, and reliable performance after replacement for homes and businesses citywide year‑round service.

Leonardi HVAC Training Center offers an 8‑10 hour A/C Pressure Testing, Vacuum, and Charging Procedures course for $350 plus a $10.45 fee. No prerequisites required. Students learn leak detection, superheat/subcooling charging, and refrigerant recovery using direct and manifold methods, preparing them to effectively install and commission new or retrofitted systems.

TopServ offers appliance and HVAC repair throughout Denver, featuring same‑day appointments, a $25 discount, and warranties of 90 days on labor plus one year on parts. Technicians are licensed, insured, and experienced with premium brands such as Sub‑Zero, Viking, Wolf. Services include refrigerator, dryer, washer, AC, and furnace quick repair.

Champion HVAC Service provides a range of Denver HVAC solutions, including AC repair, new installation, system replacement, heat pump and furnace maintenance, air duct cleaning, indoor air quality, thermostat and air handler services. Their NATE‑certified, bonded, insured technicians offer same‑day and 24‑hour emergency support, emphasizing reliable, family‑owned operation, customer focus.

ProGuys HVAC offers AC repair in Denver, covering installation, maintenance, and component repairs. Prices range from $200‑$1,000 for repairs, $100‑$300 for tune‑ups, and $1,200‑$3,000 for new units. Services include emergency 24/7 response, duct cleaning, furnace repair, energy‑efficient upgrades, smart thermostat setup, and residential as well as commercial support across neighborhoods.

ThermaCare HVAC Service offers NATE‑certified technicians for AC repair, new installations, furnace and heat‑pump work, and indoor‑air quality solutions in Denver. The company provides same‑day and 24‑hour emergency service, air‑duct cleaning, thermostat support, and system replacements. Licensed, bonded, insured, it is family‑owned with strong customer reviews across the region today.

ComfortFlow HVAC offers a broad range of indoor climate solutions, including AC repair, replacement, new installations, heat pump and furnace services, thermostat support, and air duct cleaning. Certified NATE technicians provide same‑day and 24‑hour emergency assistance. The family‑owned firm has operated in Denver since 2008, emphasizing reliable, customer‑focused quality service.

PerfectTemp HVAC Service offers licensed, bonded, and insured HVAC repair for Denver residents. Their NATE‑certified technicians provide same‑day and 24‑hour emergency assistance. Services include air‑handler work, new AC installations, system replacements, thermostat and heat‑pump maintenance, indoor‑air‑quality solutions, furnace repairs, and duct cleaning. Customer support is responsive and professional throughout operations.

Apex Clean Air provides heating, cooling, and indoor‑air‑quality solutions across Denver, Aurora, Lakewood, and surrounding Colorado communities. Services include furnace and heat‑pump installation, AC repair, duct cleaning, and system diagnostics. Customers note clear communication, fair pricing, and reliable technicians, supported by multiple trust‑badge recognitions for homeowners seeking energy efficiency throughout.