Serving Customers in Lake County Since 1948




"Seriously, Miller's is outstanding. They are so friendly and pleasant to work with, have fair prices, and always seem to be available - even in the busy season. I don't even bother comparing other companies because I truly want to give Miller's my business. They are professional, very knowledgeable, and give great customer service. We've hired them for a new furnace, and are about to replace our ancient humidifier with a new one."

​– Rachel Bleier


"We had a great experience with Miller Heating! They were very professional and courteous, and prompt! We had them completely remove our 23+ year old HVAC home system and replace it with a beautiful new Trane system, complete with a 90% energy efficient furnace, thermostat, blacklight air filter (used for sanitizing air in hospitals), air filter, humidifier, air conditioner, condensate drain pump, water heater expansion tank, and an external duct blower to augment air to a bedroom which had zero forced air since we had the house built in '93. Their staff and technicians were great to work with and very knowledgeable. In addition, they have the manpower to complete a extensive project like we just had done in a very timely manner!

Miller Heating put in an energy efficient furnace and water heater for us in our first Grayslake home during the late eighties, so we had confidence in them before we contacted them for this latest project.

We highly recommend them for any HVAC needs!"

– Dan Chesman


"I have been working with Millers Area Heating for about 7 years. We always have a positive experience. Holly always provides accurate quotes and their prices are very competetive. The work is done in a timely and professional manner within the budget discussed. We recomend Millers to all of customers. I would highly recommend Millers Area Heating."

– Aaron Glenn


​Miller's has been the greatest blessing for solving our heating and air conditioning problems anywhere in Lake County. We had no heat two winters ago, called numerous heating companies with no solution from any of them, and Miller's Heating came to our rescue with a compatible solution to repair our heating system. The owner and his very qualified experienced staff got the job done quickly. Excellent customer service and follow ups are continuous from the owner and all the staff. My husband and I live in an area where all the heating systems in the homes are obsolete. Just last week we had another problem with the old blower system leaking, they came out same day, brought spare heaters to keep us warm and installed updated equipment. We are just thrilled with their ability to deliver quality work. I have a sewing business in my downstairs family room that was always cold, now we don't have to use our heaters because of their innovative abilities to solve difficult heating systems to our home. We highly recommend this company for their work and qualified expertise with any heating and cooling problems. Very quick to respond always.

– Shelia Winstead

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