Avalanche HVAC Services offers full-service heating and cooling services including A/C and furnace repair, installation, and maintenance. We proudly serve Castle Rock, Parker, Littleton, Centennial, Elizabeth and surrounding areas.

Castle Rock HVAC Services

Avalanche HVAC Services of Castle Rock offers comprehensive heating and cooling services including HVAC repair, installation, tune-ups, inspections and maintenance. We can service your air conditioner, furnace, mini-split heat pump, boiler, swamp cooler, and all other heating and cooling systems. We also install necessary accessories such as water heaters, humidifiers, thermostats, and electronic air cleaners. For the best in Castle Rock HVAC companies, look no further! AC Repairs. Furnace Repairs. New Installations. Regular maintenance. We do it all! 

As a local, family-run small business, we strive to treat you with the same loyalty and respect that we treat our own home. Our team takes pride in the way we are able to establish positive, long-lasting relationships with our clients. We will always listen to your concerns, never up-sell you on unnecessary services, and will work ensure that you remain satisfied with our services long after we are gone. 

Proudly servicing Castle Rock, Littleton, Parker, Highlands Ranch, Elizabeth and surrounding areas.



We service and install central air conditioners, swamp coolers, and heat pumps. We use only the most trusted brands and our experienced technicians are licensed and insured through the state of Colorado.


Keep your family warm and comfortable this winter. Avalanche HVAC installs, services and repairs all brands and types of furnaces, boilers and heating elements, including water heaters and heat pumps. Click the icon for more info.

Customized Service


Avalanche HVAC does more than just repairs. When you call we will listen to your concerns and set up a time to come to the home and check out your unique situation. Our experienced HVAC technicians will outline the service options and together we will come up with a solution. We also install thermostats, humidifiers, air filters, water heaters and more.

Pictured is a high efficiency boiler we installed  for a household in Castle Rock. What is the best HVAC company near me? Look no further.


Call us at (303) 736-8151 today!

A man working on a heating unit in Castle Rock, CO

A/C Units


Electric Furnaces

Window Units

Swamp Coolers

Gas Furnaces


Air Filters

About Us


Avalanche HVAC is a locally owned and family run business that has been providing quality HVAC services to Castle Rock and surrounding areas since 2011. Our services have been given an A+ Rating by the Better Business Bureau, a 5 Star rating on Yelp, and a 4.9 Star Rating on Google with over 425 reviews. Avalanche is also a Google Guaranteed business, meaning our work is vetted and your satisfaction is guaranteed.

We our success comes from our company outlook. We treat our clients with utmost respect and honesty, and care for their homes as if they were our own.

The Best in HVAC Systems and Units

We install and service all of the top HVAC brands, including Carrier, Trane, Carrier, Rheem, Goodman, Lennox, Amana, and more. We take pride in our work and only offer what we know to be the best of the best in both products and service.

The video contains a 3 ton ducted heat pump, 3 zone mini split, quiet cool whole house fan and a steam humidifier that we recently installed.

Questions? Want to set up an appointment? Call Today!

(303) 736-8151


R Gault
R Gault
All around excellent! I won't hesitate to call again!!!
Sarah Marie Klingensmitth
Sarah Marie Klingensmitth
Andy with Avalanche is amazing! He did an awesome job on a furnace tune up for one of the rentals I manage. Even more, he alerted me of a very small pinhole leak in a nearby drain pipe that he noticed during the tune up. He saved my owners potentially $1000’s because after getting the pipe repaired, it was clear it was close to bursting and would have flooded the basement. If you want someone who will do a great job and goes above and beyond in caring for his clients, call Andy with Avalanche!
Ben Contreras
Ben Contreras
Received prompt service on the phone from Andy and had a technician out to repair the problem in short time. The technician Jacob showed thorough knowledge of diagnosing the problem and quickly came up with a solution. Highly recommend their service.
Russ King
Russ King
Fantastic service! Jacob came in, diagnosed the issue within ten minutes after my description, was honest about the part and timing of getting it in and still got it done faster than I expected. Pricing was good too! If you like to have companies in your book that you will depend on and trust, I'd add Avalanche for sure. Thanks again!
Ellen Muscato
Ellen Muscato
The company went above and beyond in delivering quality service in an efficient and proficient manner. They were easy to work with, communicated promptly and fully completed the project as agreed upon when they provided the estimate (no changes in the final bill). We were very pleased with the service and with the new water heater, furnace and HVAC.
Julie Espino
Julie Espino
Andy was very professional knowledgeable. I would highly recommend Avalanche HVAC. I will definately be using them again.
Terry Pfister
Terry Pfister
Great local company. They’re always right on time, professional & explain everything really well. 👍. They’re great about making every attempt to get out to you as quickly as possible, I called this morning and they were out to service our commercial HVAC systems that afternoon! We’ve used them for years and like that we can continue to do business with a quality local business. Thank you!
Daphne Dinnebeil
Daphne Dinnebeil
I have had good experiences with Avalanche HVAC. They have installed a humidifier and performed maintenance on our furnace. They are responsive, and very knowledgeable. Good communication as well.
google guaranteed
yelp 5 star

Service Area

Castle Rock and Surrounding Areas

Call Us


Mon-Friday: 7am – 7pm