4.8 
101 *The Angi rating for Heating And Air Conditioning Service companies in Denver, PA 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 Denver, PA 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 26, 2026
Serving Denver, PA and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Fantastic. In and out in within 2 hours. Cost $15,000 less than another Angie's List HVAC service person quoted me."
+6
Serving Denver, PA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"They were prompt and very professional. They kept us informed during the entire process of cleaning our ducts and dryer vent. They also installed an air scrubber and the total cost was several hundred dollars less than the quote we received from an HVAC company. The HVAC company told us we needed mold remediationâ ¦. DuctGurus found no mold. We received great service so we will be using and recommending this company in the future."
+190
Serving Denver, PA and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"I have a service contract with Petro. They came out to fix a leak on my heater. Service person came out on time, fixed the problem and cleaned up so you would never know he was even there. Very pleasant experience all the way through."
Serving Denver, PA and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Super professional group of the most experienced techs around. I would highly recommend and count on them for all my home’s hvac needs."
+3
Serving Denver, PA and surrounding areas
Approved
Super Service Award Winner
In business since 1959
Free estimates
Emergency services offered
"My new HVAC system failed at beginning of summer . They worked with me to fix and resolve the problem . The last visit with their technician Hunter went well. He took the time to explain and show us the different filters that we need to monitor. Thank you Hunter , Tyler and AC techs. I canâ t live without AC. Otherwise I drip with sweat . No Florida retirement for me ."
+16
Serving Denver, PA and surrounding areas
Approved
In business since 2001
Warranties offered
Credit card accepted
"Installed new 3 zone heat pump Great job"
+8
Serving Denver, PA and surrounding areas
Approved
In business since 2024
Free estimates
Customers say: True professional
"Woke to a chilly home stemming from a heat-pump issue. Posted my repair service need on Angi and within minutes, received a text and phone call from HOFFMAN MECHANICAL, who was able to come out same day and got my Lennox unit up and running again at a fair cost for both parts and the weekend/after hours service call fee. I would use them again without hesitation, and I am happy to highly recommend this company!"
Serving Denver, PA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"I hired Juan to mount a TV on the wall at my house. He was prompt and very nice! He also helped me to install a new router and get my devices connected. Highly recommended for excellent service!"
Serving Denver, PA and surrounding areas
Approved
In business since 1982
Emergency services offered
Warranties offered
"I can't say enough about the team at Old Skool HVAC. I learned of this organization from a close friend who had work done and recommended them. Frank is a great guy. On time, professional, knowledgeable, and his team is a reflection of this as well. They were always on time, on schedule, clean, and very personable. They finished our job a little early, and during the first heat wave just about week or two ago, our house never felt better. Great service, quality, and pricing. It's funny, with central AC, you never really know that it's hot out until you leave the house and come home. It's during this first transition that I realized how quiet and effective of a system that was installed. If you are looking for any form of HVAC work in your home of business, I'd recommend contacting this group of professionals."
Serving Denver, PA and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"They did a wonderful job cleaning our air dusts. They explained everthing and weee very professional and courteous. Would use them again as needed"
+3
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