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27 Years
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Your Trusted HVAC Partner in Denver
Since 1999, Rabbit Heating & Air has been delivering quality, affordable HVAC services to customers in Thornton, Denver, and nearby areas. Let us know how we can assist you. We specialize in installing premium Lennox furnaces, air conditioners, boilers, air quality products, and duct systems at the most competitive prices. Regular maintenance is essential for the proper and safe operation of your heating and cooling equipment.

We provide maintenance services to ensure your family's safety and comfort, while maximizing equipment efficiency and reliability. Prepare your heating and cooling system for the upcoming season now! Rabbit Heating & Air Conditioning is the foremost expert in heating and air conditioning services in Denver, offering a full range of HVAC services, repairs, and installations for the Denver Metro area.

From furnaces to AC units, boilers to water heaters, humidifiers to swamp coolers, we handle it all, exceeding industry standards. We install top-of-the-line Lennox products promptly and affordably, and we offer repairs for all brands of equipment.
Services
HVAC Maintenance Furnace Repair AC Installation Boiler Services Water Heater Replacement Emergency Repairs System Inspections Duct Cleaning Thermostat Installation Energy Efficiency Upgrades
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
  • 20+ years of local HVAC expertise in Denver
  • NATE-certified technicians for quality service
  • A+ Better Business Bureau rating for trustworthiness
  • Flexible financing options on new equipment
  • 24/7 emergency repair availability
Associations and certifications
  • NATE
  • EPA
  • Better Business Bureau
Payment methods
  • Cash, Checks, Debit cards, Credit cards, Financing available
Services
HVAC Maintenance
Regular maintenance ensures optimal HVAC performance. Our technicians perform safety inspections, component testing, and cleaning to prevent breakdowns. Services include carbon monoxide checks, filter replacements, and efficiency tuning for furnaces, AC units, and boilers. Annual maintenance extends equipment lifespan and maintains manufacturer warranties.
Furnace Repair
Emergency and scheduled furnace repairs for all brands. We diagnose issues like ignition failures, blower malfunctions, and heat exchanger cracks. Our team provides same-day diagnostics and transparent pricing for residential and commercial systems. Repairs include parts replacement and system recalibration to restore safe operation.
AC Installation
Professional AC installations for new and replacement systems. We offer Lennox and Concord units with SEER2 ratings up to 16. Our process includes load calculations, ductwork adaptation, and electrical upgrades. Standard installations include condensing units, evaporator coils, and 220V circuit connections for reliable cooling performance.
Boiler Services
Comprehensive boiler maintenance, repair, and installation services. Our technicians handle high-efficiency models with AFUE ratings up to 84.4%. Services include annual inspections, pressure checks, and component replacements. We specialize in hydronic heating systems for residential and light commercial applications in cold climates.
Water Heater Replacement
Installation of standard and high-recovery water heaters. Our team assesses household needs to recommend tank capacities and venting options. Services include old unit removal, plumbing adaptations, and code-compliant installations. We offer power-vent models for improved energy efficiency and consistent hot water supply.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency repair services for furnace, AC, and boiler failures with no overtime charges.
What financing options are available?
We offer 12 months no-interest or 60 months at 7.99% APR financing on new Lennox equipment for qualified customers.
Are maintenance plans available?
Yes, our annual maintenance plans include two inspections per year, priority scheduling, and 10% off repair services.
Do you install smart thermostats?
Yes, we install and program smart thermostats compatible with all major HVAC systems for improved efficiency.
What warranties do you provide?
We offer a 1-year labor warranty on installations and manufacturer parts warranties ranging from 1-10 years.
Videos
Reviews (17)
Diego G.
Aug 23, 2025 Report
Amazing focus on specifics! They examined my whole ductwork and flue, highlighting problems I wasn't even aware of. Following the cleaning, the air circulation enhanced significantly, and the fireplace operates flawlessly now. Really comprehensive assistance.
Brian Fricano
Sep 26, 2023 Report
We had 2 AC Units and 2 Furnaces in our home that were undersized despite it being a new home. Rick (the owner) came out to our house to bid the project and walk me through our options. In addition to providing the best pricing in the Denver area (they even post their prices on their website), the company was very professional and they completed the entire job in 1 day! I would highly recommend Rabbit Heating and Air if you are looking to replace your AC unit or Furnace.
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!
Wes
Apr 23, 2023 Report
Spoke to Rick (service tech) on the phone he was very knowledgeable, professional, and a pleasure to speak with. We need more service men like Rick in this world!
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!
Jake Weber
Dec 02, 2022 Report
Rick at Rabbit Heating and Air definitely takes pride in getting a good job done. I had a 35 year old furnace and no AC, so I was looking to upgrade everything at the same time. He gave me tons of options which I definitely appreciate. Compared to the cheapest competitors who just said "We'll throw in an economy AC and furnace for ya", his detailed explanation on options really helped me feel like I was a part of the process.

Because I care so much about the environment, he was able to get me a High Efficiency Heat Pump/AC installed High Efficiency Furnace installed for a lesser price than the "Economy Models" from big name contractors, and while it's not the dirt cheapest installation, I feel good knowing I got a quality system installed. I recommend Rabbit Heating and Air 100%.
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
Britinie Horvath
Sep 03, 2020 Report
From start to finish this company is one of the best I've every dealt with. Amazing people and great workers. They are thorough, kind and hard working. They were able to get me in for set up of my AC almost right away. They came out made sure everything was covered so nothing would get damaged or dirty. The job was a tough one and they worked all day at it. Everyone was courteous and polite and their financing options are so helpful. They are very fair with their pricing as well! I will be using them again for any of my HVAC needs. I highly recommend them!
Byron Guidry
Aug 21, 2020 Report
Rick Rodriquez was very professional and fair. Rabbit presents their pricing up front. They are very competitive and do not add fees. We compared to Costco contractor and they were cheaper. They flexed their replacement appointment around our family vacation but still fit us on their schedule on 97 degree days. They fixed numerous things: bad pad placement, moved the electric service box, doubled our basement return duct capacity, which greatly increased the air output on the second floor! Along with a larger and more efficient unit, our electric bill went down! I recommend Rabbit and will use them again!
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.
Sandra Torres
Oct 11, 2019 Report
Rabbit installed both my furnace and water heater, I have never seen a company so professional from beginning to end friendly phone staff and the installation was on point very nice work, I would recommend Rabbit and the crew to everyone :
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.
Ronald Shaw
Jan 29, 2018 Report
I was very pleased with this company. Rick Rodriquez was proffessional and thorough. Rabbit Heating and Air was on time and came to my repair facility the same day that I called. We really appreciate you guys.
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
Neal McCracken
Jun 29, 2014 Report
I'm very happy with Rabbit. Rick was the technician from Rabbit. He did very good quality work. They showed up on short notice and fixed the problem. I'll call these guys again in the future for anything HVAC related.