Get matched with top thermostat installers and replacers in Buffalo Grove, IL

"In the middle of the night on 2/2/22 during a snowstorm, my furnace went out. I texted Carlos at 7am, and by 10:30am he had replaced the blower motor, and I had heat. Besides that, my furnace is running more quietly than it's ever run before. Very impressive."

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.

"I just won a beautiful water heater from Legendary Service, and they were amazing. The installation was quick, easy, and clean. The owners came down personally to make sure everything went smoothly. Very nice people and I would definitely go to them for all my plumbing and heating needs!"

"Prompt arrival and quick service Plus answered all my questions about thermostat replacement"

"Nicole came out to see if my furnace could be fixed. She recommended a new install since fixing it would be feasible for a furnace that old. I asked how many BTU's and she sent me an analysis she did. She came for the install on time and it took as long as she estimated it would. She is very knowledgeable and is ok with answering questions for a novice. The price was competitive. Highly recommend."

"Tech was super quick with repair. Was very nice and straight to the point. Explained everything and visually showed us what was wrong with our dryer. Really great service. Highly recommend!"

"Response was fast and repair/replacement was quick. Communication on quotes and repair status was very good"

"CJ Russell was the first company to call me reference this work. He seemed honest and scheduled time to look at what needed to be done. James came out. i showed him the steel door I wanted replaced with another steel door. i showed him the paint color i wanted. James made necesary calls to find the door. He painted the door then installed it one day later. The color looks great and so does the door! James also replaced hardware on a closet door and adjusted another door so it smoothly slides now. James did a great job and cleaned up after all work was completed. His pricing was reasonable and his work is of good quality. i would hire him again. l"

"Small job but critical to fitting in a new frig. Job went flawlessly. No problems at all"

"Connected new attic fan, installed by roofer, in place in attic that was difficult to get to. Also very quickly diagnosed and fixed Casablanca fan in bedroom. Honest, ethical, knowledgable, time-efficient, motivated to do quality work. Much more cost effective than competitive contractors."