NATE - Certified

HVAC Service Areas in Northern Colorado

McCormick Heating & Cooling is family-owned in Greeley and serves communities across Northern Colorado — find your city below for local AC, heating & emergency service. NATE/EPA-certified, 20+ years.

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1116

4.9-Star Reviews

20+

Years of Local Service

BBB A+

Accredited Business

NATE - Certified

Technicians

Family-Owned

and Operated

What Areas Does McCormick Heating & Cooling Serve?

McCormick Heating & Cooling serves Greeley (our headquarters and map-pack city) plus Northern Colorado and the Front Range — including Loveland, Longmont, Fort Collins, Windsor, Evans, and many more across Weld, Larimer, and Boulder counties.

Operating from one central Greeley location lets our local crews reach most Northern Colorado neighborhoods within a short drive, so you get the same family-owned service whether you're in town or one county over. We provide air conditioning, heating, indoor air quality, and emergency HVAC service to every community listed on this page. Pick your city below.

Greeley

(HQ · map-pack city): Our home base at 2881 S 31st Ave. Same-day AC, heating, and emergency HVAC for every Greeley neighborhood.

Loveland

Foothills temperature swings are hard on equipment. We keep Loveland furnaces and AC units tuned for the season ahead.

Longmont

From older downtown homes to newer builds, we right-size heating and cooling for Longmont's mix of housing.

Fort Collins

Our northernmost hub. Fast repairs, system replacements, and indoor air-quality upgrades across Fort Collins.

Windsor

A quick drive from our Greeley HQ. Efficient AC and furnace service for Windsor's growing neighborhoods.

Evans

Right next door to headquarters so Evans homeowners get some of our fastest same-day response times.

Boulder

Front Range comfort solutions for Boulder's energy-conscious homes, from high-efficiency systems to air quality.

Platteville

Local heating and cooling for the southern Weld County stretch.

Additional Northern Colorado communities we cover:

Ault · Berthoud · Dacono · Eaton · Erie · Firestone · Fort Lupton · Frederick · Galeton · Garden City · Gill · Gunbarrel · Johnstown · Kersey · La Salle · Lucerne · Lyons · Mead · Milliken · Niwot · Nunn · Pierce · Severance · Timnath · Wellington

Don't see your town? We cover much of Northern Colorado and the Front Range. Give us a call and we'll confirm coverage for your address.

Why Choose a Local, Greeley-Based HVAC Company?

Because you get a real local team, not a national call center. McCormick is based in Greeley, dispatches technicians across Northern Colorado from one HQ, and backs every visit with 20+ years of family-owned service and a satisfaction guarantee.

A single, established Greeley location means consistent scheduling, faster drive times to most NoCo towns, and the same trusted crew from your first tune-up to a full system replacement. We also understand Front Range conditions: high-altitude, dry-climate homes near 4,665 feet put a real strain on furnaces and AC systems. Our techs size and service equipment accordingly. Same-day service and after-hours emergency support (additional cost) keep you covered when comfort can't wait.

McCormick Heating & Cooling has been family-owned and operated since 2006. That’s more than 20 years of Northern Colorado HVAC service backed by a satisfaction guarantee. Our NATE- and EPA-certified technicians stand behind every install and repair, so homeowners across the region trust us with their comfort.

That experience shows up in the details: factory-trained, NATE-certified and EPA-certified technicians, manufacturer warranties on new equipment, and a workmanship guarantee on the jobs we complete. 5.0 ★ rating · 1,030+ Google reviews reflect the consistent, local service families count on year after year.

    
 
 
      Trustindex verifies that the original source of the review is Google. McCormick’s came through again with Justin doing a great job for us. We had furnace and A/C maintenance done at our new house to make sure everything was working properly. A couple of issues were found and Justin had them fixed within a couple of hours. Now we have peace of mind about our HVAC system. Highly recommend McCormick’s!
  
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   Mary P. 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Angelo is a fantastic worker, he was very helpful and made things easier.
  
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   miskokittagakoonsekwe 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Angelo was very knowledgeable and helpful. Would definitely use this company again!
  
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   Lilyana Palafox 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Spencer was great! He solved our gas leaks very quickly.
  
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   J Stark 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Justin provided excellent service during our fall furnace checkup. Justin was very friendly and courteous. Treated our home and us with much respect.
  
  Posted on Google  
 
    
   Kevin Vaubel 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Spencer did really great
  
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   Justin Shaver 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Justin gave fantastic service. Was quick and responsive. Thank you McCormick services for a rapid repair.
  
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   Ethan Stein 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Justin was friendly, communicative, and efficient. Would definitely hire him again.
  
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   Michelle Brodsky 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. McCormick was very quick and responsive when I reached out about a furnace concern. They got me scheduled same day and Justin showed up on time and was very thorough and professional. He walked me through the service and made sure everything was functioning properly. Great company and great staff!
  
  Posted on Google  
 
    
   Samantha Bellendir 
 
 
 
 
  
  
 
 
      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

No Heat or No AC? We're Here 24/7

Fast after-hours emergency HVAC service when your system can't wait.

CALL (720) 217-4801

Don't See Your City?

Call (720) 217-4801. McCormick covers much of Northern Colorado and the Front Range, and we'll quickly confirm whether we service your address. If your town isn't listed yet, we'll connect you with the nearest local crew or take your details through our free estimate form.