Avalanche HVAC Services offers full-service heating and cooling services including A/C 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 air services including HVAC repair, installation, and maintenance. We can service your air conditioner, furnace, heat pump, 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 in the Colorado winters. Avalanche HVAC installs, services and repairs all brands and types of furnaces 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. 

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 375 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.

Air Conditioner Units
Gail Ward
Gail Ward
Best experience. Knowledgeable. Will definitely use again, he's on my speed dial for future problems.
Diana Hutton
Diana Hutton
The representative was prompt and very respectful. I would definitely call Avalanche for all my HVAC needs.
Sutherlan Wilson
Sutherlan Wilson
After our warranty company sent out a competitor and told us we'd be looking at a $600+ bill for cleaning our coil and blower to get our AC working again, we decided to get a second opinion with Avalanche and we couldn't be happier. Andy gave a courtesy call, arrived up on time with a friendly smile, and explained what he found in layman's terms. His honesty and expertise saved us that $600 when he discovered the previous company neglected to remove a piece of fallen insulation that covered the coils and was causing the AC to freeze over. You just don't find people as genuine, well-meaning, and with such integrity like Andy at Avalanche anymore and we are eternally grateful for his time and expertise. He has a customer in us for life now, when we aren't so fortunate with our hvac outcomes. Thank you Andy for saving the day!
Natalie Gray
Natalie Gray
Was on time, professional and courteous. Fixed all the wiring that a rodent had chewed and had the AC working in less than 2 hours. I will use them again!
Daniel Payan
Daniel Payan
Great experience with Andy. He was thorough, helpfully and informative regarding our AC unit (maintenance). Will reach out to them again for my heating and cooling needs
Melissa Garner
Melissa Garner
Jacob was very professional and courteous when he came to my home to fix the AC unit. He was able to explain the issue with the unit very clearly, and spent time showing me how to operate and set up my Nest unit. Overall experience was great, and I highly recommend Avalanche HVAC!!!
Karilee Harkema
Karilee Harkema
Great company!! Professional, on time, friendly, and made sure everything was done right for a great price!
xavier gonzalez
xavier gonzalez
Fast with good communication and got our AC back up and running in no time!
google guaranteed
yelp 5 star

Service Area

Castle Rock and Surrounding Areas

Call Us

(303) 736-8151 


Mon-Friday: 8am – 5pm