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27 Years
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Emergency
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Your Trusted HVAC Partner in Denver
Since 1999 Rabbit Heating & Air has provided quality affordable HVAC service for customers in Thornton, Denver and surrounding areas. Please let us know how we can help you. We install quality Lennox furnaces, air conditioners, boilers, air quality products and duct systems at the best prices. Your heating and cooling equipment requires maintenance to ensure proper and safe operation.

We offer maintenance services to keep your family safe and comfortable while insuring maximum equipment efficiency and reliability. Get your heating and cooling system ready for the season NOW!. Rabbit Heating & Air Conditioning is the leading specialist in heating & air conditioning services in Denver including all HVAC services, repairs, and installations for the Denver Metro area.

From furnaces to AC units, boilers to water heaters, humidifiers to swamp coolers, we do it all, while exceeding industry standards. We install top-notch Lennox products quickly, at unbeatable prices, and perform repairs on all brands of equipment.
Services
HVAC Maintenance Furnace Repair AC Installation Boiler Services Water Heater Repair
Served areas
  • Brighton CO, Commerce City CO, Centennial CO, Thornton CO, Northglenn CO, Westminster CO, Lakewood CO, Aurora CO, Erie CO, Broomfield CO, Wheat Ridge CO, Denver CO
Details
  • Year established: 1999
  • Employees: 10
  • Licensed
  • Insured
Highlights and features
  • We offer 20 years of local HVAC expertise with NATE-certified technicians.
  • Our team provides free diagnostics with all completed repair services.
  • We guarantee to meet or beat competitive quotes from licensed providers.
  • We offer 24/7 emergency service for urgent heating and cooling needs.
  • Our installations include a 1-year labor warranty and manufacturer parts coverage.
Associations and certifications
  • NATE
  • EPA
  • Better Business Bureau
Payment methods
  • Cash, Debit cards, Credit cards, Mobile payments
What people say
Professional technicians Affordable prices Prompt service Quality workmanship Clear explanations
Services
HVAC Maintenance
Our preventative HVAC maintenance ensures optimal system performance and longevity. Technicians perform carbon monoxide testing, component inspections, and thorough cleanings for furnaces and air conditioners. Annual servicing reduces breakdown risks, lowers energy bills, and maintains manufacturer warranties while ensuring safe operation for Denver's climate.
Furnace Repair
We diagnose and repair all furnace brands with 24/7 emergency response. Our NATE-certified technicians handle ignition issues, heat exchanger problems, and efficiency concerns using stocked service trucks. Repairs include a 30-day labor warranty and manufacturer parts coverage for Denver's winter reliability.
AC Installation
Professional AC installations feature Lennox and Concord systems with SEER2 efficiency ratings. Our process includes proper sizing assessments, ductwork adaptation, and electrical upgrades when needed. New installations come with a 1-year labor warranty and manufacturer parts protection for Denver's summer cooling needs.
Boiler Services
We provide boiler installations, repairs, and certifications for residential and commercial properties. Services include efficiency assessments, leak repairs, and replacement of 80+ AFUE models. Our technicians handle permits and code compliance for Denver area boiler systems requiring hot water distribution solutions.
Water Heater Repair
Emergency water heater repairs address leaks, heating failures, and pressure issues across all brands. Our technicians perform same-day replacements when needed, installing energy-efficient models with proper venting and code compliance for Denver's residential and commercial clients.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service for urgent heating and cooling issues in Denver.
What HVAC brands do you service?
We repair all brands including Lennox, Concord, and other major furnace and AC manufacturers.
How often should HVAC systems be serviced?
Manufacturers recommend annual maintenance for optimal performance and safety of heating and cooling systems.
Do you offer financing options?
Yes, we provide 12-month no-interest or 60-month low-rate financing on new Lennox equipment.
Are estimates free?
We offer free in-home estimates for new installations and major repair projects.
What areas do you service?
We serve Denver, Thornton, Lakewood, Westminster, Broomfield, and surrounding Colorado areas.
Videos
Reviews (13)
Boeun Chea
Aug 13, 2023 Report
Rabbit bear several other quotes and came out within 24 hours of my water heater going out. They communicated well. Prices were always clear and no hidden fees. Technicians arrived on time and were respectful and explained the whole process. They finished quickly and cleaned after themselves. I paid what I was quoted. This is how business should be done!
Eric Dougherty
Feb 04, 2023 Report
Great technicians and service. Our heat went out in the middle of the night and they were here same day and install next day postponing plans they had that were less urgent. Pricing was reasonable and the level of attention given on informing me the progress from start to finish was excellent. Installed both a new furnace, ac unit, and re-ran ducts, new registers, and intake in the same day, whereas other companies were 6 weeks out prioritizing larger jobs. Would recommend them to anyone.
Kathy Rames
Jan 01, 2023 Report
Fast, friendly service and my new high efficiency furnace is amazing! Everything was explained to me from beginning to end, which I really appreciated. Thank you!
Merilynn Waldman
Jul 21, 2021 Report
We used Rabbit Heating & Air to replace our 24 yr old furnace in our crawlspace & install new Central Air. They arrived on time, work masks due to covid & throughout duration of the job. They completed the entire job in 1 day. They put down coverings & cleaned up so well. The furnace & AC passed City Inspection with 1 visit. The crew was instructed by Rick to remove old insulation & re-connect a vent.

They were efficient from start to finish. They performed every detail as Rick instructed them to do. They didn't try to sale anything extra. The end costs were exactly what was on the estimate. Their pricing is very fair. They answered all of our questions. Rick showed us how to replace the filter & basic information. Barb assisted with the financing on the phone, it was critical in the process. The new furnace is working great, with so much more air flow coming thru the vents. We cannot wait to use the AC! They were ready to work & get the job done. So happy we chose Rabbit Heating & Air. We Highly recommend them! Lynn & Adam
Anthony Jensen
Jun 11, 2021 Report
Rick and his team were amazing. They are very professional, respectful and hard working. They even worked extra late to make sure we had AC working that night. Pricing was very reasonable. We highly recommend them! Services:Heating system installation, Install AC
D. C.
Jan 30, 2021 Report
Rick and Alejandro did a great job, the whole process was painless and easy, great bid, great and professional installation. Highly recommended
Kate McElroy
Jul 19, 2020 Report
Rick is a fantastic person to work with, and his team Alex and others are hard workers who do the job right. We had 3 quotes for a new AC system and theirs was the most honest & reasonable with a high quality product and excellent service. Would absolutely recommend them, we are very happy with our new system, the way it was done, and the cost.
Paul Bonsell
Jul 31, 2019 Report
The owner is very knowledgeable. He was more interested in getting me the best equipment for the size of my house rather than just letting me buy the most expensive system. I bought a furnace from them and a year later i upgraded to central air. In my opinion and i did my research. i got not only a killer deal on equipment they supplied but the installers went above and beyond. Everyone else i know that has central air, you can tell the installer just threw everything in as quick as they could.

Not these guys, they really spent a lot of time and effort on the install. I am a skilled tradesman myself so typically my opinion when i hire someone to do work is that i could've done it better. That was definitely not the case this time. i was thoroughly impressed and got way more than my money's worth. I highly recommend Rabbit Heating and Air. I hope to see this company continue to be successful in a market that is extremely difficult based on how much competition there is out there.
Ajay Malhotra
Dec 09, 2018 Report
Rick was very helpful in determining the correct a/c unit based on the layout of our home. His team was able to come and install the unit within a few hours. I am pleased with their diligent work and the price they offer for the a/c units. They even list their price online, so cool. Furthermore, the inspection passed with no issues at all. Lennox seems to be a fantastic brand and it cools my house in no time.
Elizabeth Fanning
Sep 03, 2018 Report
Water heater not working, was able to come within 2 hours of calling- on a Saturday evening no less. No other company contacted was willing- although they deceivingly advertise hours as though they are available until 8 and even 10 pm. Rick was very knowledgeable and provided an objective assessment of the problem and the overall condition of the water heater. No sales pressure to upgrade, although incentive was offered with partial cost of repair credited towards a new hot water heater if replaced within the next 30 days. I was also impressed that he declined to take a tip after an efficient repair on a holiday weekend. Rabbit Heating and Air can definitely count on my future business! Thank you!
Dave Smelker
Aug 23, 2018 Report
Rabbit replaced our AC unit and did a great job. They went above and beyond, including reworking the ducting to ensure it was as efficient as possible. They responded quickly, were incredibly professional, knowledgeable, clean, friendly, and polite. They will be our go to for any heating or cooling needs in the future.
Mary K. Nguyen
Dec 22, 2017 Report
Mark, technician from LENNOX Rabbit Heating & Air, he is knowledgeable and fast. They warranty their products and services. Thank you Mark
John K.
Jul 01, 2017 Report
I am pleased with the service. I have used them three times in the past two years. I am pleased with how thorough they are when they visit, but I am more pleased at the fact that they don't gouge me. So far I have had excellent luck. I will use them again in the future. As well, I did not think they were too expensive.