Heat Pump Install, And Much More!, Furnace Install , and 1 more
"We would have appreciated a FOLLOW UP call after install to see if there were any problems or how was the system working for us."
James D. in March 2021
HVAC, Electrician, Electrician , and 1 more
"He really knew his work he was professional on time and explained to me what he was doing I would and will use him again.."
Tereasa B. in September 2021
Residential Installs
About us: "We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business"
Mini-Splits, Commercial Refrigeration, HVAC Installations , and 7 more
"I needed the water heater replaced at my house as soon as possible and Alex was super accommodating. I couldn't be more satisfied with his service. His professionalism and expertise were evident from start to finish. Not only did he provide a great price, but his work was also top-notch. He arrived on time, communicated clearly, and ensured everything was installed correctly and efficiently. I highly recommend Prime Cooling and Heating LLC for any HVAC needs. Excellent service!"
Christine M. in August 2024

HVAC
"Absolutely fantastic experience with George. I got home from a work trip at 5:00pm to discover my furnace s blower fan had burnt out. George came that evening and stayed until 9:30 to fix it, at a price that was more reasonable than those quoted by others. He was a true professional and I would recommend him to anyone."
Jake B. in December 2019
ALL HVAC SERVICES, Refrigeration
"Did a radiator and boiler inspection, fixed an issue with my boiler. Called back to install a digital wifi thermostat. Will also be calling to replace my boiler before next year. Great guy, excellent pricing. Going to be doing lots of business with him!!!"
Benjamin B. in October 2023
In business since 1980
About us: "In 1972, Donnelly’s Cooling, Heating & Plumbing began serving Pennsylvania residents with premier plumbing services and later expanded to add their superior HVAC services. As the area’s top choice for plumbing, heating, and cooling service, we’re proud to offer unmatched professionalism and quality results. With same-day and emergency services, our team is always available for your home service needs. Plus, with service for all brands and free estimates, you can trust you’re in excellent hands with our team."

Geothermal Heating and Cooloing, HVAC
"Great company. I had my AC fixed. Their staff, from April who handles admin, to Wayne who diagnosed our machine and found the leak for the cost of the initial visit whereas other companies wanting to charge us a $1000 to do that. To Thomas, who did a professional job, making sure I was informed of the process, answering any questions I had, and taking care of any concerns. He was professional and very personable. I can't say how much they cost compared to other contractors but right off the bat they saved me $1000 which puts them far ahead of the crowd in my book. Even if it was a bit of a premium, its a premium I am happy to pay for good craftsmanship and piece of mind."
6D1D356AE65C9B05447D86BA307AE43BDC1BD4E5807F79D2A35FFF57D63B30CC D. in May 2026
gas boiler, mon-sat 8-4, gas furnance , and 5 more
"Demetri, the technician, was on time and worked our furnace issue until it was fixed. He explained everything as he went and stuck around long enough to make sure the repair worked."
Tom W. in December 2021

Sewer & Water Line Replacement - We Can Repair or Replace a Water or Sewer Line Without Destroying Your Front Lawn - Call for a Free Water or Sewer Line Inspection, Plumbing - Water Heaters, Leaky Faucets, Running Toilets, Sump Pump Repair & Installation & Much More, Heating - We Service All Makes & Models, 2 Year Warranty on Repairs, Annual Service Plans for Cleaning & Maintaining Equipment , and 2 more
"After signing up with Servicepro, I was on the phone with Horizon within 10 minutes. This was about 9:30 PM. They offered to come and fix the problem he next morning (day before Thanksgiving) but I declined because I was going away. Anyway I scheduled a 10 am appointment for Friday November 28, 2008 and they were very prompt. The techinitian expalined the issue and my heat was up and running within the hour. Very impressed with their service and professionalism. I am now signed up for annual check up for my HVAC system and would not hesitate to recommend them to others."
kirk A. in December 2008

Generator Installs, Panel Upgrades, Electrical Switches, Outlets & Fixtures - Repair
"This was as good an experience as one could want given a plumbing problem."
Duane C. in November 2022
Glenside Heating & Furnace Contractors are rated 4.6 out of 5 based on 1608 reviews of 1608 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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