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Greeley

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HVAC System Maintenance

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Residential HVAC Services

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Air Filtration and Purification Systems

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HVAC System Installation

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Quality, Year-Round HVAC Maintenance in Greeley

A Plus provides dependable HVAC services and repairs, including routine maintenance, installations, and emergency services. Our maintenance plans are designed to save you money while catching HVAC issues early, helping you avoid costly repairs down the line. Just like preparing for an exam, regular furnace and AC maintenance keeps your system ready to handle Greeley’s freezing January mornings or blazing July afternoons.

Homeowners across Northern Colorado trust A Plus for preventive maintenance, system replacements, energy-efficient upgrades, and more. Whatever the season, we have you covered.

Preventive HVAC maintenance

Furnace tune-up service

Central air system maintenance

Heat pump troubleshooting

Furnace replacement

Central air system installation

Air filtration upgrade service

Indoor air purifier installation

 

Call today to schedule an appointment with our Greeley HVAC company. We offer free estimates and exclusive discounts for seniors and military personnel.

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Join Our Member Service Plan for Extra Perks


Regular HVAC maintenance is crucial to keeping your system running at peak performance. By joining our member service plan, you’ll enjoy:

  • Priority service
  • 15% off future repairs
  • Biannual maintenance visits
  • 10% off all air quality products
  • A $50 credit toward a new comfort system for every year you’re with us!
 

A Plus: Full marks from homeowners in Greeley and Northern Colorado

  • We give back to the community
  • We service all types of HVAC equipment
  • We follow strict EPA standards
  • We bring years of specialized experience
  • We prioritize outstanding customer service
  • We treat each client like family

As authorized distributors of AprilAire and Lennox products, we’re ready to meet all your HVAC installation and air quality needs in Greeley. Contact us today to get started on your next project!

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ExcellentGoogle star 1Google star 2Google star 3Google star 4Google star 55.0452 reviews
5.0Google star 1Google star 2Google star 3Google star 4Google star 5
Excellent452 reviews
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Kara Owen profile picture
Kara Owen
4 November 2026
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We had a great experience with A+! I initially reached out to them about HVAC maintenance, air duct cleaning, and a dryer duct cleaning. Zach came out to take a look and said we actually didn’t need our air ducts cleaned yet - I appreciated his honesty. Everyone from A+ who came out was professional, on-time, and skilled. They made sure we understood what work was done and how we could best take care of the systems in our house. We fully plan to use them for all of our HVAC and duct cleaning needs moving forward!
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John Krueger profile picture
John Krueger
2 November 2026
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Have complete confidence in Zach, Grant and Mike and their ability to provide excellent service. Great personalities, friendly, courteous, respectful young men!
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Sherry Haubert profile picture
Sherry Haubert
29 October 2026
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A plus is my new go to for heating and air! Micheal and his apprentice were very professional and informative, without being condescending. I will definitely be using their services again!!
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Barbara McGrane profile picture
Barbara McGrane
29 October 2026
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Thorough.
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Aaron Eyl profile picture
Aaron Eyl
28 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I would highly recommend A Plus Heating & A/C. Scheduling an appointment was easy. The communication was great (which is hard to find these days). My technician was Michael, who was on time, courteous, and explained to me what the issue was. I ended up needing a new thermostat and I had Michael complete the biannual maintenance on my system. I feel like the maintenance was reasonably priced but thermostat was a little more expensive than I was expecting. I did end up going with a higher end thermostat that works better with my system. Also, I truly believe you get what you pay for and in this case working with A Plus was painless. I am more then willing to pay a little extra for a good experience. A plus will be my go to HVAC company from now on.
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Russ Gentert profile picture
Russ Gentert
28 October 2026
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The guys (Grant and Mitch) did a very good job troubleshooting and repairing my old furnace. They were super friendly and professional.
Posted on Google Google
Chip Brownlee profile picture
Chip Brownlee
26 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Prompt competent service. The technicians I felt we very respectful, friendly and explained what they were doing and findings. Definitely will use this service in the future for AC and Furnace needs
Posted on Google Google
Ray Depew profile picture
Ray Depew
26 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
It's a great small business to work with. Every interaction with them has been courteous and professional. I would recommend them to anybody. UPDATE, OCT 2026: Still true, every word of it.
Posted on Google Google
Troy Dixon profile picture
Troy Dixon
23 October 2026
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Michael is great
Posted on Google Google
Ryan Fernandez profile picture
Ryan Fernandez
23 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Awesome company! Highly recommend!

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Service Areas

Longmont, Lyons, Berthoud, Loveland, Windsor, and Johnstown, CO Serving all of Northern Colorado

Preferred Vendors

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Lennox Premier
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