Get matched with top thermostat installers and replacers in Palatine, 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."

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!"

"Andrew contacted me in a timely manner and was able to come out the same day. He brought different thermostats for me to choose from. Everything was very professional. I highly recommend."

"The project was to install a zone system for my upper and lower floor, I have a large house and cooling and heating it was always a problem, the second floor was always to hot in the summer and cold in the winter. The AC and furnace was working none stop and the result was crazy electric bill. I called 2 other AC technicians before Climate Construction to get estimates, after talking to both of them I felt that I am getting ripped off. one told me that I need to change the AC and furnace unit to get results and the other said the I need to replace bunch of duct work or the zoning will not work. Than I called Climate Construction , Roman came in and quoted me with a very very reasonable price, the AC didn't had to be changed and nor the furnace, I was surprisingly amazed! The job was completed FAST and guess what, everything worked like a CHARM! I set the schedule of the thermostat for the lower floor during the day and upper floor during the night! The result are UNBELIVABLE! GET YOUR SELF A ZONING SYSTEM!! and be carful not to get ripped off!"

"I spoke with Val on the phone, my refrigerator was leaking water. He said he would be able come by between 12-3pm. When he was on his way, he texted me with his ETA. Arrived promptly, and diagnosed the problem quickly. Replaced the connector on the water line, tested it, working properly, all set! I was very grateful that he was able to come out so quickly and fixed the problem. Very nice serviceman. I highly recommend him!"

"Kevin and Brad did an amazing job! They replaced the subfloor that had been damaged by a leak from my toilet, installed new flooring, and put in a new toilet, making the bathroom look brand new. They showed up on time, stayed until the job was completely finished, and made sure everything was cleaned up before they left. Super friendly, professional, and hardworking. I highly recommend them!"

"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!"

"I received prompt quotes for all tasks requested and prices were reasonable. All appointments scheduled in a short timespan and both Andy, the owner, and workers consistently arrived as scheduled. I initially contacted Andy to help locate a shower pan to meet my needs, and he suggested a cultured marble base that worked out well. Since I couldn't install the base myself, I hired HMMH to do the installation and also had them do the rough plumbing at the same time. I then engaged HMMH to deliver, hang, and tape and mud the drywall -- nearly 100 sheets total. Cement board was used in the shower and greenwall was used in the rest of the bathroom. Drywall was used elsewhere including the bedroom and bathroom ceilings. The workers were very efficient and the muddling was excellent with virtually no major or minor defects requiring touch up. I then had HMMH install tile in the bathroom shower and floor, and for a hearth and surround for a fireplace. For the tilework, Andy sent Heath who is very meticulous as is required for good outcomes with tile."

"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."