Miller's Area Heating
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Miller's Area Heating
Miller's Area Heating and Air Conditioning was founded in 1948 by two zealous hardworking men known in town as the Miller brothers. Jim and Ray Miller started with just one truck and a truckload of know-how and integrity. They found the town of Grayslake an ideal place to build their dream; so a location in the center of town was chosen as their business location, and after all these years the address is still the same.

In 1975, after 27 years in the HVAC business, Ray decided he wanted more of his time devoted to fishing and less time devoted to work; so he sold the company to Jim. Jim obviously had a plan of his own because at about the same time Ray sold his portion of the business, Jim's son, John, was growing into just the man Jim needed to replace Ray.
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During this very unusual time, we have put a plan to do our part to help keep our community safe. First and foremost, we are going to stay calm, patient, kind, and positive! Is your furnace acting up, blowing cold air, or making too much noise? Don't get left in the cold! Our experienced team of professionals is here to keep your home or business warm and cozy.
Miller's Area Heating is your #1 Commercial HVAC contractor in Grayslake, IL, and the surrounding communities. When your air conditioner needs service we are the leading choice for all of your company's cooling needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Miller's Area Heating are the qualified and professional crew for the job.
Miller's Area Heating is the leading Commercial HVAC company in Round Lake, IL, for your company's heating needs. We install, service, and repair all commercial makes and models. If you need heating service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.
Not spending money unnecessarily as a business owner is a smart strategy toward success. To cut costs, sometimes owners will decide against spending on regular commercial HVAC maintenance, since their systems and equipment seem to be running well. That is a mistake. By having regularly scheduled maintenance performed, you are actually saving money in the long run, since many repairs are preventable with regular maintenance.
According to the U.S. Department of Energy's Energy Star program, leaky ducts in attics or crawlspaces can account for 20 percent or more of a home's heating and cooling energy losses. This results in higher utility bills for you and difficulty keeping your house comfortable. Run your system, and check all the ducts and joints you can access.
Reviews (7)
Ward Feger
Ward Feger
Dec 29, 2021
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Based on reviews, I decided to use Miller for my HVAC check ups. First came the A/C check-up last spring. Everything seemed fine until he left and I noticed he left my garden hose unrolled from my back yard to the side where the unit was, and the water still running. I wasn't too annoyed, just thought he forgot.
Decided to sign up for one of their maintenance contracts. Called them to come back out in the fall for the furnace and humidifier check. Also asked them to install a new thermostat (an Ecobee they advertise on the website). I get a call less than 30 minutes before he is supposed to show
Naomi Moderson
Naomi Moderson
Dec 27, 2021
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We bought our AC from Miller's and have used them for annual maintenance for both our furnace & AC. The technicians have always arrived on time and always have the time to answer any questions. Would recommend.
Service: Heating maintenance
Jefferson McMillan-Wilhoit
Jefferson McMillan-Wilhoit
Nov 23, 2021
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While I originally gave Miller's a 5-star rating because of the yearly furnace tune-up they provided, I just had them come back out because our pilot light went out on one of the furnaces. The same technician (Josh) who worked on our system last time was the one who came out this time. He quickly diagnosed and resolved the problem. And, because we had a maintenance contract with Miller's, the service call and repair was covered. Not saying that will happen for everything (the part that was out was minimal), but I was thankful to have the maintenance contract.
Overall, both times Josh has been
Ogelini Thirston Iii
Ogelini Thirston Iii
Nov 13, 2021
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Extremely appreciative of the quick turnaround and repair on my furnace today. Called about Noon, diagnose and repair by 2pm.
Knowledgeable staff and techs, so professional and fast!
I definitely recommend!
Melissa Leaderman-Pekofsky
Melissa Leaderman-Pekofsky
Oct 13, 2021
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We recently switched to Miller’s and they are amazing!! Very thorough and great a diagnosing issues!!! We highly recommend them!!
Lisa LoMonaco
Lisa LoMonaco
Sep 17, 2021
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Great service at a fair price. My technician was courteous and honest.
Amy S.
Amy S.
Aug 16, 2021
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Positive: Professionalism, Quality, Responsiveness, Value
We were absolutely 💯 satisfied with the no pressure estimate and install for replacing our old boiler. Miller's installed a new condensing boiler within our price range and everything was timely, professional, and easy! Miller's answered all of our questions (we had a lot!) and had excellent communication all around.
Services: Installation, Heating system installation, Thermostat installation