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Miller's Area Heating

Miller’s Area Heating and Air Conditioning was founded in 1948 by the Miller brothers. We are proudly still excelling in our family-owned and operated business located in downtown Grayslake, IL. Our highly skilled HVAC technicians are NATE-certified and consistently take courses for continuing education to learn about state-of-the-art products and techniques in the heating and cooling industry which allows us to better serve our Lake County customers.


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Customer Testimonials

We love hearing from our customers! If you've had us work on your HVAC system we would love to hear from you too.

Miller’s Area Htg. has been our “go-to” HVAC company for several years.

“Miller’s Area Htg. has been our “go-to” HVAC company for several years. Dependable and trustworthy. Our AC started struggling last week so I obtained several proposals for a replacement. Holly, Miller’s Project Mgr., came out the next day. Her knowledge and professionalism was outstanding. We purchased a 2 stage variable speed, 4 ton air conditioner and a 95V furnace. Holly took care of the paperwork and obtained the village permit. Everything was installed today by Mike, Oney (our friendly regular technician), and Sean in a matter of only 8 hours. Their workmanship was impeccable. They removed all of the old equipment and performed a clean up of the work areas. Mike, the lead installer, took the time to update me on their progress throughout the day, walking me through the new included wi-fi thermostat, and completing a checklist and walkthrough at the conclusion of the job. They made sure that there were no questions left unanswered before they left. I’m now enjoying the comfort of our new AC thanks to Miller’s Area Htg. and Air Conditioning. Thanks very much! 1/9/19: I should have also mentioned that when the building inspector came for the final approval, he was impressed by the workmanship by Miller’s.”

Always on time and always done efficiently

“Maintenance calls, always on time and always done efficiently.”

-William S.

I have had several great experiences with Millers

“I have had several great experiences with Millers, 1st one 3 years ago in winter when my furnace would not start up, I called the people who installed the furnace (not millers) and they told me it be a $300 trip charge because it was a Sunday PLUS what ever it cost to fix it… I decided that sounded a bit excessive.. I called Millers and they said they they do not charge just to arrive at your house. well a really nice guy came over and started working on my furnace, (it had never been serviced since its install) he tested everything and found a dirty sensor was the problem, he proceeded to disassemble the furnace and clean everything.. he definitely worked a full hour on it, and of course the furnace worked fine, I just looked up the bill in check book from 11/24/2014 total charge $109. WOW! I almost feel like a stole something from them at that price. Also had my office furnace serviced 1/7/2016 total cleaning also $109 I cant find my more recent receipt for a more serious failure, and electronic board failed and the board was something like $300.. still when I think about my Car getting serviced I had an electronic module in my door go bad and that was $250 and a second one in the tailgate was another $250 my bill was $700 just to fix some stupid modules that randomly caused weird problems in my car. Replacing a $300 board in my furnace seems like a deal compared to my car.

Last Note here the people in the office and owners at Millers are great regular people, the kind of people you would not mind having as your neighbor or a night out on the town. I stopped in their office to thank them and the owners are great down to earth people.”

-Paul B.

Our Most Recent Articles...

An HVAC technician in Grayslake, IL, servicing a homeowner's air conditioner.

Is HVAC Preventative Maintenance Worth It?

April 16, 2019

Maintaining your heating and cooling system with preventative maintenance reaps multiple benefits for you! Protect your HVAC investment for the long haul…

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A happy & healthy young puppy in Grayslake, IL.

Does Indoor Air Quality Affect My Pet?

March 26, 2019

Protect your pets from indoor air pollution by changing your air filters regularly. To learn more, contact Miller’s Area Heating at 847-223-0211 today!

Read More
Woman annoyed that her Grayslake, IL, home keeps losing power because her heat pump is tripping the circuit breaker.

Why Your Heat Pump is Tripping the Circuit Breaker

March 12, 2019

It can be frustrating if your heat pump is tripping your circuit breaker, but it’s a safety measure in place to protect you. Here are five common causes…

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We Service All Brands

We service all HVAC brands.

We Service All Brands

We service all HVAC brands.

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