EMERGENCY SERVICES

FEEL BETTER AT HOME WITH A NEW AC INSTALL

Air Conditioning Installations in Greeley, Colorado

McCormick Heating & Cooling has been in the business of installing new air conditioners in Greeley and the entire front range for over 15 years. In that time, we’ve built a strong reputation as a reliable and caring service provider. We want to provide exceptional service to our local community and we know that our fellow Coloradans deserve the best. We take care of you and your home the way we take care of our own, and we guarantee that you won’t find any other HVAC provider in Greeley that is more personable and professional than the technicians at McCormick Heating & Cooling. As fellow Greeley residents, we understand the importance of having a fully functional air conditioner during the hot, Colorado summers.

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McCormick HVAC Van

Local HVAC Installations You Can Trust!

  • Locally Owned & Operated

  • Unbeatable Prices

  • 100% Satisfaction Guaranteed

  • 5-Star Google Rating

  • NATE & EPA Certified Technicians

  • Multiple Financing Options

Looking For More Cooling Services?

Visit our Air Conditioning Services page to explore installation, maintenance, and alternative cooling options.

Signs It May Be Time For a New AC Unit

  • Age – Consider the age of your unit as the first factor!  The average lifespan of a central AC unit is about 15-20 years. According to the Department of Energy, even if your AC is only 10 years old, you may save 20%-40% of your cooling energy costs by replacing it with a newer, more efficient model.
  • Noises –  Listen for any troublesome noises coming from your AC unit such as squealing, banging, clicking, hissing, buzzing, or rattling.  Any loud noise is indicative of an issue.
  • Smells – You can help prevent funky odors with routine maintenance, but if you ever notice any kind of burning smell coming from your AC, turn it off immediately and contact a professional.  Any other foul odors like dust, mildew, or mold, mean your system likely needs service, maintenance, and/or a deep cleaning.
  • Poor Performance – Some common warning signs that it may be time for a new AC are: your system runs constantly but doesn't seem to cool the house, you notice a change in your systems airflow, or you detect an increase in your home's humidity level. These are all signs that there's potentially an issue with your HVAC system. Pro Tip: If the cost of your repairs exceeds the value of your AC unit, then it is time to replace!

 

Just need a AC repair service? Check out our AC repairs page.

An HVAC Company You Can Trust

Just Ask Our Customers

Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I submitted a claim through First American Home warranty and they assigned McCormick to take a look at my fire alarm. They called as soon as they opened and set up an appointment with Jake Hernandez to come out today! He was quick to diagnose problem and replaced the malfunctioning alarm. Thank you Jake for your exceptional service! Update 4-2-26 Josiah and Brian came out to tuneup and clean the A/C. They were friendly and professional explaining what was happening during the service. Thank you!!!
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Marcia Jackson profile picture
Marcia Jackson
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Always a pleasure to have McCormick Heating & Cooling over to keep my HVAC system up and Running. Justin and Josiah were professional, punctual, and explained some basic maintenance I should keep my eyes on. 10/10 would recommend Justin and McCormick Heating & Cooling to anyone needing such services.
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Nick Minar profile picture
Nick Minar
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Angelo was a fantastic tech, his other coworkers were just as great, they took care of us 100% and left my furnace room better than they found it, very happy…Thank you McCormick Heating and Cooling!
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derrek majors profile picture
derrek majors
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Angelo was very good at his job, went above what was necessary to make sure everything was installed correctly and will remain safe for us for the future. Cleaned up everything and looks better than before he arrived. Thank you
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Yvonne Majors profile picture
Yvonne Majors
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Wow! What a great experience. Justin was so cheery and fast. He got everything fixed and even changed out the filter. Thanks a bunch
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Kara Tuzinovic profile picture
Kara Tuzinovic
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David and Jason replaced my H Vac system. They were so very knowledgeable and kind. They explained how to use and perform maintenance on my new system. I was extremely pleased how they showed care for my home. Thank you gentlemen I truly appreciate you both. I would recommend McCormick to anyone needing work with their H Vac system.
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Cathy Miller profile picture
Cathy Miller
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I’ve been using McCormick for 7 years now- they are very skilled at working on my non-traditional HVAC mini split system and have consistently saved me money over other companies. Josiah was able to diagnose and fix my heat issue on the spot! Thanks McCormick!
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Kimberly Lammertin profile picture
Kimberly Lammertin
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Justin and the team at McCormick Heating & Cooling were excellent. They took the time to thoroughly diagnose issues with my boiler, test multiple valves, and walk through the system carefully to identify the most cost-effective solution rather than just recommending unnecessary replacements. Their approach was thoughtful, transparent, and very professional. Justin in particular was fantastic—knowledgeable, patient, and clearly experienced. He explained what he was doing at each step and made sure everything was working properly before finishing the job. In the end they replaced the necessary components and got the entire system running perfectly. It’s rare to find a company that is this honest, responsive, and detail-oriented. Highly recommend McCormick Heating & Cooling if you want quality work and technicians who genuinely care about doing the job right.
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Alexander Whiteman
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Quick service. In and out quick. Couldn’t expect anything better.
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Gavin Torres profile picture
Gavin Torres
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My entire experience was smooth, informative and successful! Angelo and David installed the new furnace. They were efficient and patient with all my questions. And they were knowledgable and friendly! Highly recommended for your HVAC needs! Thank you Mcormick!
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Isa Segismundo
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Satisfaction Guaranteed
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What Makes McCormick's HVAC Team So Special?

Licensed & Certified

Our HVAC technicians are licensed and NATE-certified so you can rest assured easy knowing your home is in good hands.

Satisfaction Guaranteed

We guarantee our craftsmanship for 3 years from the date of install.  Every unit we install comes with a 10-year limited parts warranty and 3 years of free maintenance!

We Do It All

No matter what brand of air conditioner you prefer, our team of highly skilled technicians can install it.

 

The Benefits of Installing A New AC Unit

  • Keep Cool – Installing a new air conditioner is an essential part of keeping your home comfortable.
  • Save Money – Save 30%-50% on your energy bills with a new energy efficient unit.
  • Reduce Allergens – Modern AC units have upgraded filtration systems allowing for less debris and dust which means a cleaner home for you and your family!
  • Control Humidity – New AC units can help control humidity levels so you can remain comfortable in your home all year round.
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View Other AC Services

Installs, maintenance, seasonal tune-ups and more.

Financing Options

McCormick has partnered with multiple lenders to give you the best HVAC financing options possible.

AC INSTALL/
AC REPLACEMENT
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McCormick is a Trusted Armstrong Air Partner

McCormick Heating & Cooling is an Authorized Armstrong Dealer

In order to provide the best service possible, we’ve partnered with Armstrong Air for all your air conditioning replacement and installation needs. A division of Lennox, Armstrong has been in operation since 1928 and has seen and repaired it all throughout the years. All AC services and unit replacements are performed by technicians that have been certified by the North American Technician Excellence (NATE) organization, so you can always be confident that you’ll always be receiving the help of a highly skilled professional. This gives us the ability to combine the knowledge and expert services of experienced industry professionals and the excellent customer service you’d expect from a locally owned business. Schedule an appointment to request one of our NATE-certified technicians to attend to your air conditioning installation needs!

HVAC Options Made Affordable.

HVAC Coupons

Our coupons are always changing! Check back regularly to see if there's a coupon for the HVAC service you need.

HVAC Financing

We know the cost of AC installations can add up quickly. McCormick is happy to partner with Foundation Finance Company to offer financing for your HVAC services.