Get matched with top nest installation pros in Mount Prospect, IL

"Very responsive and offered options for financing. The Legendary Service Team has a thorough understanding of regulations and offers environmentally friendly suggestions for your HVAC needs. They did a furnace/AC replacement in my home. Their scehduling system texts you when they are in route to your home. The install went seamlessly. They kept all work areas covered and clean. I will use them for all future maintenance needs."

"The job was completed perfectly."

"Robert was great. I needed help installing my 75" tv. I left a message over the weekend. He called me in the morning on Monday, and TV was installed that same afternoon. He was able to provide the mount and at a fair price. All in all, very glad to find his service and expertise. After the mounting we chatted about other upgrades I wanted to do and he gave me some helpful advice on what to think about. I would definitely recommend his services."

"The best! Installed my dishwasher from home depot (they kept making up new reasons they couldn't). No issues at all. Courteous. Ever so grateful. Will use again."

"The new furnace and A/C were installed professionally and on time."

"The service guy came out very quickly. Had a smart thermostat installed. He walked me through setting up the app. Did a fast and a great job. I highly recommend this company if you want it done and done right."

At One Hour Heating & Air Conditioning, we've been proudly serving Chicago-area communities with expert heating and cooling services for over 65 years.\n\nOur reputation is built on delivering legendary service—with every technician fully background-checked, drug-tested, and bringing at least five years of professional HVAC experience to your home.\n\nYou, the customer, are the most important part of our business, and we never forget that.\n\nBe sure to ask about our flexible financing options—we're here to keep comfort within reach.

"The technician showed up an hour late but they did call and say he was running late. The technician was very knowledgeable and knew the model of thermostat I had very well. The work went very well on the thermostat installation with no complications. The work took the amount of time the technician quoted. I am quite happy with the installation!"

"Responded within minutes to my service request and was available same day. Successfully installed the smart thermostat. Very happy with his service and would hire him again, if needed."

"Got quotes from several companies and they were far and away the lowest price, next closest was almost $2k more. Guys came in and installed dual furnace and free humidifier in a day. Highly recommend."