4.7 
740 *The Angi rating for Heating And Air Conditioning Service companies in Johnstown, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Johnstown, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on June 25, 2025
Serving Johnstown, CO and surrounding areas
Approved
In business since 2011
Emergency services offered
Customers say: Super punctual
"Dayne got a fairly old swamp cooler up and running and working great. The anxiety over the price was put to rest when given the bill, it was a relief in how reasonable the price was."
Serving Johnstown, CO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1978
Free estimates
Emergency services offered
"Brian, the HVAC technician was professional, friendly and extremely knowledgeable, he provided a full estimate before starting the work and then performed the repair immediately. We were back up and running in minutes. Well Done 1 hr team."
Serving Johnstown, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Emergency services offered
"Professional, efficient, and very high quality work. Heart has performed multiple major projects for us (replacing furnace, water heater, humidifier, and now AC system) and I would absolutely recommend them for any similar work."
+24
Serving Johnstown, CO and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"We had two AC units and a new furnace installed they were prompt, efficient, very respectful and great customer service! Dean was an absolute pleasure to work with, they have earned my business for life on any HvAC services I might need! Highly recommend"
+3
Serving Johnstown, CO and surrounding areas
Approved
In business since 2008
Emergency services offered
Warranties offered
"Kitchen remodel electric. Trevor Lance knocked it out of the park."
+38
Serving Johnstown, CO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Best HVAC team in town! Great communication, fair prices, and easy to work with and on time. Used them to fix a boiler issue before sub zero temps rolled in."
+35
Serving Johnstown, CO and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"Our AC went out and we needed to get it fixed ASAP for a family reunion we were having at our house in the coming days. I submitted an Angi request and Tony was the first to call within minutes. He was very friendly and professional, and was able to schedule a same day appointment amidst the heat wave and countless others experiencing AC issues. Once he arrived he conducted a thorough diagnostic and determined what the problems were and proposed the fix. The costs were more than reasonable and he was able to complete the repairs in a timely manner and rescue us from the heat and another sleepless night! I would highly recommend Bertolini HVAC Services and they will be my go to for any future HVAC issues."
Serving Johnstown, CO and surrounding areas
Approved
In business since 2017
Free estimates
Small jobs welcome
"I actually had my furnace and my air conditioner replaced. I found Brandyn, Curtis and Rob all to be very professional and informative. (It was my choice to replace both, no pressure to upsale) Furnace was pushing 30 and air was not far behind. Rob and Curtis answered all my questions and left my house and yard exactly as they found them. I was very pleased to have chosen 1st Action to handle my job. Jan H."
Serving Johnstown, CO and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Knowledgeable experienced professional service at reasonable cost. Great fast service."
+7
Serving Johnstown, CO and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"These guys were great! Excellent service, friendly workers and professional all the way through. I truly believe that the fact that this company is veteran owned sets the standard for all employees. I would hire them for any of my plumbing or HVAC needs. If they did work but an issue arises after they complete the job, no problem. Theyâ ll be there that same day to fix it. They explained everything they were doing and answered all questions I had."
+1
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