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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.

Air Conditioner Maintenance in Round Lake Beach, IL 60073

“Tech did an outstanding job.” – Stephen H.

Air Conditioner Replacement in Lake Villa, IL 60046

“They replaced our 27 year old furnace/AC.. from our consultation with Holly till completion was done professionally,courteously and done a day ahead of time. The experience was easy peasy and we are very happy. Cant wait for the dog days of summer to be able to cool our home without dreading our electric bill. HIGHLY RECOMMEND MILLER HEATING.”

– Sue K.

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.”

Our Most Recent Articles...

Air conditioner in backyard of home

Four Things to Know About Your AC

May 7, 2019

Air conditioning isn’t exactly a stimulating topic to bring up at parties. It’s not something most people think about too excessively. But at Miller’s Area Heating, we’re obsessed with it! We want to share with you some things that you may not have known about your air conditioner (AC).

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The importance of air conditioner maintenance in Grayslake, IL.

Video – The Importance of Air Conditioner Maintenance

April 30, 2019

The best time of year to have your air conditioner maintenance scheduled is spring, even if you reside in a locale with pretty warm weather all year long.

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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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Need HVAC Service?

Contact the experts at Miller's Area Heating.

Call us at 847-223-0211!

We Service All Brands

We service all HVAC brands.

We Service All Brands

We service all HVAC brands.

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