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Protect your system and save on repairs with our comprehensive Heating Service Plans.

Call (303) 736-8151 today for plan options & pricing!

HVAC Services in Littleton, CO

Trusted Heating & Cooling Experts Serving Littleton, CO

Family-Owned HVAC Excellence for Littleton Homes & Businesses

At Avalanche HVAC, we’ve been keeping Arapahoe County homes comfortable since 2012. As the historic heart of South Denver, Littleton sits at 5,351 feet elevation — meaning your heating and cooling system faces real Colorado weather challenges all year round. Whether you need emergency furnace repair in January or AC service before a summer heat wave, our local team is ready.

We serve Littleton, CO and all surrounding South Metro communities with the same commitment to quality, transparency, and fast response times that earned us a 4.9-star Google rating from over 587 customers.

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Call Now For Same Day Service on Your AC, Heater, Furnace, Boiler or Plumbing Repair In Littleton! (303) 736-8151

Full-Service HVAC in Littleton, CO — Everything Your Home Needs

From summer AC tune-ups to emergency furnace repairs in the middle of a snowstorm, Avalanche HVAC handles every heating and cooling need for Littleton homeowners:

Air Conditioning Repair & Service: Fast diagnosis and repair of all AC brands. Our $99 AC tune-up includes a comprehensive multi-point inspection to prevent mid-summer breakdowns.
Furnace Repair & Maintenance: At 5,351 ft elevation, your furnace works hard. We service all makes and models with a $89 furnace tune-up backed by a 1-year guarantee.
Boiler Service & Repair: Expert service for hydronic and steam boiler systems common in Arapahoe County homes.
Heat Pump Installation & Repair: Year-round heating and cooling efficiency — ideal for Littleton’s variable climate.
24/7 Emergency HVAC: No overtime charges. We respond fast when your system fails at the worst possible time.
Water Filtration Systems: Clean, filtered water for your home. Ask about our whole-home solutions.

Why Littleton Homeowners Choose Avalanche HVAC

We’ve earned the trust of South Metro Colorado families since 2012. Here’s why Littleton residents call us first:

Local Expertise: We know Arapahoe County homes, elevations, and the unique HVAC demands of Colorado’s Front Range climate.
Transparent Pricing: Flat-rate quotes before any work begins. No surprise charges, no hidden fees.
NATE-Certified Technicians: Our team holds the industry’s gold standard certification for HVAC excellence.
Google Guaranteed & BBB A+: Background-checked, vetted, and accredited. You can trust who we send to your home.
Same-Day Availability: Most Littleton service calls are completed the same day you call — including 24/7 emergencies.
Carrier Authorized Dealer: We install and service top-tier equipment with full manufacturer warranty support.

Common Questions About Our Littleton HVAC Services

Have questions about our HVAC services in Littleton, CO? We’ve answered the most common ones below. Don’t see your question? Call us at (303) 736-8151 — we’re happy to help.

Contact Us

Do you serve Littleton, CO?

Yes! We proudly serve Littleton, CO and all of Arapahoe County. Whether you need same-day AC repair or a scheduled furnace tune-up, our team can reach you quickly from our Castle Rock base.

How much does HVAC service cost in Littleton?

Our furnace tune-up is $89 (with a 1-year guarantee) and AC service is $99. Repair pricing is always quoted upfront before any work begins — no surprise charges. Call (303) 736-8151 for a free estimate.

Do you offer 24/7 emergency HVAC service in Littleton?

Yes. We offer 24/7 emergency heating and cooling service in Littleton with no overtime fees. If your furnace goes out in the middle of the night or your AC fails during a heat wave, call us at (303) 736-8151.

What HVAC brands do you service in Littleton?

We service all major HVAC brands including Carrier, Trane, Lennox, Rheem, Goodman, Bryant, and more. As an authorized Carrier dealer, we also offer top-tier Carrier equipment installations for Littleton homeowners.

What Our Customers Are Saying

      
   Avalanche HVAC Services
   588 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   Ashley Andrus 
 
 
 
 Trustindex verifies that the original source of the review is Google. The Avalanche team always responds quickly and is super knowledgeable and helpful!
  
 
      Posted on Google  
   
   Michael Calvelage 
 
 
 
 Trustindex verifies that the original source of the review is Google. Efficient, effective, on time and stook care of business
  
 
      Posted on Google  
   
   Mike “EmthonScrib” 
 
 
 
 Trustindex verifies that the original source of the review is Google. On time and corrected the problem with our heater.
  
 
      Posted on Google  
   
   Jim Gregory 
 
 
 
 Trustindex verifies that the original source of the review is Google. Donald was very knowledgeable and explained what the problem was doing and what he was doing. He explained the things I should do. Very nice, pleasant workmanship.
  
 
      Posted on Google  
   
   Tom Gibson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Don and Caleb were great technicians sent to work on our A/C  They performed the repair and inspection to my full satisfaction.  This is the latest time I have used them and I certainly would recommend them to anyone in need of HVAC service and will use them in the future.
  
 
      Posted on Google  
   
   Jim Lennon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Communication was outstanding.  Follow-thru on promises were kept.  The entire job was well done and very professional.
  
 
      Posted on Google  
   
   Simon Johnson 
 
 
 
 Trustindex verifies that the original source of the review is Google. These guys are the best. Excellent knowledge and service
  
 
      Posted on Google  
   
   Jeni B 
 
 
 
 Trustindex verifies that the original source of the review is Google. Service was great!
  
 
      Posted on Google  
   
   Terry Pfister 
 
 
 
 Trustindex verifies that the original source of the review is Google. We have had this Avalanche HVAC servicing both our commercial and residential units for many years.  They're a great local company and they really set customer service as a high priority.  Thank you for all that you do!
  
 
      Posted on Google  
   
   Jennifer Devenish 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have used Avalanche for years now. Well over 10 years now, I highly recommend them to family and friends for any of their heating or cooling needs. Very professional, prompt, and super polite.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more