Get matched with top thermostat installers and replacers in Oak Brook, IL

"Excellent service from start to finish. The technician handled our thermostat installation and central A/C repair quickly and professionally. Everything is working perfectly now and the whole process was explained clearly. Very reliable team and highly recommended."

"Donnie gave an estimate that was significantly below the competition. City Inspector reviewed work and commented on high quality install of new furnace. Crew was professional and timely. Great value!"

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 had a real emergency, in the midst of the freezing cold, and they arrived in 30 minutes to access the situation. The following day they fixed ALL of the issues that I had with my electricity"

"Installed nest gen 4 thermostats for my furnaces "

"I recently had Hot Cold Air Company repair my furnace, and I am thoroughly impressed. Their technician arrived promptly, diagnosed the issue quickly, and explained everything clearly. The repair was done efficiently, and my furnace is now working perfectly. I highly recommend Hot Cold Air Company for their exceptional service and professionalism."

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"The contractor was professional and knowledgeable. He provided high quality customer service. He was thorough and precise with its service to our air conditioner. I will definitely call on his service again. He was the best and my air conditioner is running very well. This is why I use Angi's."

"They did a great job replacing and securing old drywall in our garage. They installed an electrical outlet which works perfectly but his suggestion, to make it easier, was to use BX which is not code in the area. Luckily I knew that because my parents would have gone with it unknowingly. I definitely wouldn’t hire them for carpentry work. We had a prehung front entry door put in and screen door reinstalled. We ended up having to have someone else come out and redo the job because they installed it so out of square that you could see daylight and the screen door wouldn’t close unless you pushed it with all your weight. They didn’t replace the interior trim or the piece of flooring they pulled out. They did a good job installing the peephole, mail slot and handle. Would recommend for small jobs but nothing too involved. Definitely not electric or carpentry."

"We were very happy with the repair of the hinge on our storm door. He repaired it by replacing a few washers that has gone missing. Other repair people recommend we replace the whole door."