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



Miller's Area Heating and Air Conditioning | Trane Furnaces, Trane Air Conditioners

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.

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 to run their business out of 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.

Father and son worked together successfully until 1993 when Jim sadly lost his battle with cancer. Since then, John has been the driving force behind Miller’s Area Heating and Air Conditioning. John Miller is continuing his family’s dream. After nearly 60 years in the heating and cooling business, the goal is still the same – To operate with utmost integrity, to keep up with the latest technology and education available, and to deliver great service and products.

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

  • Furnaces
  • Air Conditioners
  • Ductless Systems
  • Air Cleaners
  • Humidifiers
  • Zoning Systems
  • Integrated Control Systems
  • Boilers
  • Radiant Heat
  • Hot Water Heat
  • Garage Heaters

Serving Customers in Lake County Since 1948