Serving Customers in Lake County Since 1948

Miller’s Area Heating and Air Conditioning was founded in 1948 by the Miller brothers. We are proudly still exceling 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.

Contact us today at (847) 223-0211 to schedule your on-site evaluation!
We look forward to serving you.

We offer a wide array of services to our customers which include:

  • Maintenance, Repair, and Replacement
  • Retro Fit
  • Custom Design
  • Renovation
  • New Construction
  • Gas Piping
  • Ductwork
  • Energy Recovery Ventilation
  • Ultraviolet Lights
  • Water Heaters
  • Whole House Generators
  • In-Floor Heating
  • Free On-Site Evaluation of your Needs
  • 24-Hour Emergency Service
We offer a wide array of products to our customers which include:

  • Furnaces
  • Air Conditioners
  • Air Cleaners
  • Humidifiers
  • Zoning Systems
  • Integrated Control Systems
  • Boilers
  • Radiant Heat
  • Hot Water Heat
  • Garage Heaters
Our Brands
Latest News Fall Furnace Tune-Ups

Remember!! It’s time to tune up your furnace for optimal performace and efficiency. Call us today to schedule your appointment. Evening hours available for your convenience now through October 18th, 2012.


Whole House Generators

Miller’s Area Heating offers 24/7 power protection with automatic standby whole house generator systems. Protect your family Prevent damage or costs due to an outage No gasoline to store Runs on propane or natural gas Contact us today to discuss … Continue reading


Client Testimonials I was very happy that they were able to squeeze me in. The maintenance person was very nice and the ladies in the office were very friendly. Dana P., Grayslake, IL Miller's did a great job, and their installer was well prepared and efficient. The humidifier is also doing very well for us, we have all been more comfortable and have no 'dry skin' complaints any more. Barry O., Grayslake, IL Very good customer service. Prompt attention to my needs. Jerry and Ken are great technicians. Janet G., Grayslake , IL In the 20 years that I have owned this building, this is the best "upgrade" that I have made. John Miller made this all possible and he is truly more than a commendable representative for your products.
Ken and Judy F., Wildwood, IL

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