HVAC Company Serving Johnstown

Give your home a passing grade in year-round comfort with A Plus Heating & AC! Serving Johnstown, Berthoud, Loveland, and Windsor, Colorado, we offer top-tier residential HVAC services to keep you comfortable no matter the season.

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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Your Comfort, Our Priority

Depend on our Johnstown HVAC company for reliable preventive maintenance, furnace tuneups, and more.

Homeowners across Northern Colorado trust us for comprehensive HVAC solutions. As a Johnstown HVAC company, we install, replace, service, and repair all types of systems. Whether your system is acting up or you need a full replacement, we’ve got you covered. Our services include:

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 Johnstown HVAC company. We provide free estimates and offer special discounts to seniors and military personnel.

Join Our Exclusive Service Plan for Added Benefits

Preventive HVAC care is key to a long-lasting system. Our member service plan ensures your system operates smoothly year-round. Sign up to receive:

Priority service
15% off future repairs
Biannual maintenance visits
10% off all air quality products

The longer you stay with us, the more you save! For each year on the service plan, you’ll earn a $50 credit—apply those credits toward a brand-new comfort system down the road.

Why Choose Our Johnstown HVAC Company?

Our local HVAC services stand out for a reason. Customers choose us because:

We give back to the community
We service all makes and models
We follow strict EPA standards
We bring years of specialized experience
We prioritize outstanding customer service
We treat each client like family

As proud distributors of AprilAire and Lennox products, our Johnstown HVAC contractors are here to help with all your heating, cooling, and air quality needs. Contact us today to learn more about how we can assist with your residential HVAC projects.

      
 Excellent5.0445 reviews
 5.0
 Excellent445 reviews
  Write a review 
 
 
 
   
 
 
      Posted on Google  
   
   marcia larson 
 20 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. I was so pleased with A Plus Heating & AC and the service provided by Zach yesterday!
Zach was very personable, professional and efficient in checking my furnace system. He gave me the confidence that the system was working properly for the season and identified and addressed all my concerns.
Thank you Zach and A Plus!
I will be using your company again in the spring for the AC checkup and will recommend you to friends and family!
A great local business!!
  
 
     Posted on Google  
   
   Debbie & Marilyn McJilton 
 18 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Grant did an excellent job as usual. He's always very professional and efficient and explains the work he has done complete with photos. I'm always happy with the services from A Plus!
  
 
     Posted on Google  
   
   Daisy Riesberg 
 17 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Zach was extremely thorough and showed great attention to detail. He took the time to explain everything I needed to know about properly caring for my furnace, including what I should and shouldn’t do to keep it running efficiently. I really appreciated his patience, knowledge, and willingness to educate me rather than just complete the job. His professionalism and quality of work were outstanding! I highly recommend Mitch and his team. A job very well done!
  
 
     Posted on Google  
   
   Scott Oetting 
 17 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Mitch was very good - great at problem solving to ensure that the furnace was in the best working order as possible.
  
 
     Posted on Google  
   
   Paul Phillips 
 16 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. The technician came back to replace some PVC pipe that was leaking from another companies original install. Thank you Zack for finding and Repairing/Replacing it promptly and properly! Very satisfied!
  
 
     Posted on Google  
   
   Linda Krier 
 15 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Grant was great - knowledgable, explained things well, made good suggestions.   He inspired my confidence.
  
 
     Posted on Google  
   
   Danny Secrest 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Michael did a great job determining the problem with my heating system.
  
 
     Posted on Google  
   
   Mike Goeser 
 14 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Grant came to perform HVAC and humidifier maintenance and did a great job!  Very professional and great service!  Thanks a lot.
  
 
     Posted on Google  
   
   Matthew Regenie 
 13 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Zach came out and talked us through options to cool down our older two story home in Fort Collins and was very knowledgeable and honest on the best option for us.
  
 
     Posted on Google  
   
   Alyssa G 
 13 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Michael and the guy he was training, sorry I don’t remember his name did a great job, they text us to let us know they were on there way. They  were on time, and very polite. They cleaned the coils and did all the other inspections on our furnace .