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Claim This BusinessAscendant Heating & Air Conditioning opened its doors in November 2011 at 938 S Monaco St Pkwy in Denver. The family-owned contractor has compiled an impressive track record, earning a 4.8-star rating across 89 customer reviews. Serving the Denver metro area within a 12-mile radius of the 80224 zip code, the company dispatches NATE Certified technicians who handle furnace repair, air conditioning installation, heat pump services, and indoor air quality improvements for residential customers throughout the city and surrounding neighborhoods.
What distinguishes Ascendant from other Denver HVAC contractors is their commitment to same-day service and round-the-clock availability for emergencies. Their team specializes in high-efficiency system installations, including units rated at 97% efficiency and 16 SEER that qualify for local utility rebates. The company handles the full scope of residential heating and cooling needs, from thermostat programming and air duct cleaning to complete system replacements, without subcontracting work to outside crews.
Customer reviews highlight specific technicians who have earned trust through thoughtful service. Katie C. describes working with Herbert for appointments over multiple years, praising his honesty in recommending only necessary repairs rather than pushing unnecessary upgrades. When Tabitha Benton's system failed during a summer heat wave, Ross arrived promptly, helped select an eligible high-efficiency system, and arranged a portable AC until installation day. Herbert and Brendan completed the installation while answering her questions, with manager Tony personally inspecting the completed work.
All three featured reviewers award 5-star ratings, with each story including specific technician names and describing repair scenarios ranging from annual maintenance to complete system replacement during extreme weather. Customers emphasize honest assessments, punctual arrivals, and thorough explanations of new equipment.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Diagnose and repair cooling system issues, perform tune-ups, and clean components to maintain efficiency.
Fix heating system failures, replace worn parts, and ensure safe operation during cold months.
Install complete heating and cooling systems, including high-efficiency units up to 97% efficiency and 16 SEER ratings.
Install and maintain heat pump systems for year-round heating and cooling in Denver homes.
Install and program smart thermostats, and train homeowners on system operation.
Improve home air through ventilation upgrades and filtration solutions for Colorado allergies.
Clean ductwork to improve system efficiency and reduce airborne particulates in the home.