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Miller's Area Heating is the leading HVAC company in Grayslake, IL, for your furnace service needs. We service and repair all makes and models. If you need furnace service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.

How Much Money Can a New Furnace Save You?

Our AFUE energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit's AFUE value and compare it to a newer, more efficient system. You can even customize it to better match your home's system for a more accurate calculation.

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Furnace Repair

Don’t get left in the cold! Is your furnace acting up, blowing cold air, or making too much noise? Our experienced team of professionals is here to keep your home warm and cozy. We repair all makes and models, and we will never try to sell you a service that you don’t need. Our technicians are honest and hard working, and we’re always transparent and fair about the work we do.

Furnace Replacement

Sometimes a repair is not sufficient to fix your furnace. Sometimes a new furnace is the most cost-effective and energy-efficient way to go. We will always be honest with you about a possible furnace replacement. We value our time and your money––we don’t want to perform repairs or service on an appliance that is in need of replacement.

If you do need a furnace replacement, we know how overwhelming it can be. Here are some of the frequently asked questions about furnaces that we get from some of our Grayslake, IL residents:

What Are The Different Types Of Furnaces?

Single Stage: A single-stage furnace has only one stage of operation. It can either be turned on or turned off.

Two Stage: A two-stage furnace has two settings––full and half speed. This is a more efficient way to heat and provides for better comfort, because it can move the air at a slower pace.

Variable Stage or Modulating: A variable-stage or modulating furnace modulates the speed and heat output based on the temperature outside and the desired comfort level. This furnace only works as much as you need it, making this type the most energy-efficient type of furnace.

What Is AFUE?

AFUE, or Annualized Fuel Utilization Efficiency, is a measure of furnace-heating efficiency. The higher the AFUE, the more efficient the furnace.

What Size Furnace Do I Need?

We can calculate the correct size furnace for your home. The number of BTUs, or British Thermal Units, needed to heat your home is dependent on a number of variables. Contrary to what you might think, a bigger furnace may not necessarily mean more heating power for your home. Call us at Miller's Area Heating, and we can set up an appointment to calculate the furnace size you might need.

Need Furnace Service?

Contact the experts at Miller's Area Heating.

Call us at 847-223-0211!

Gas Furnace Repair in Round Lake Beach, IL 60073

“Corey came out within 40 minutes of my call on Thanksgiving Day. He explained each of his diagnoses in understandable detail. Unfortunately the first diagnosis was wrong. While acting on his second diagnosis he discovered a loose connection which was causing the whole problem all along. This is not a complaint, I know it's always a process of elimination. And I was very pleased that nothing needed to be replaced, so it only cost me the service call. Corey was also very nice to deal with. He represents your business well. Thanks again for taking care of us all these years.” – Jeff L.

Gas Furnace Maintenance in Barrington, IL 60010

“Extremely fast response to a 'last minute' call. It wasn't an emergency, but was handled quickly and correctly. Thanks.”

– Jim D.

Gas Furnace Maintenance in Grayslake, IL 60030

“Love the work you all do for me! Happy Thanksgiving 🦃”

– Deb H.

Gas Furnace Maintenance in Grayslake, IL 60030

“The team seemed to be very knowledgeable and honest. They corrected a major issue that was carelessly 'completed' by my prior heating/cooling company which could have resulted in a fire. I can't tell you how grateful I am for that!!! You guys are my new go-to company, thank you.”

– Gail B.

Gas Furnace Maintenance in Grayslake, IL 60030

“Technician was very prompt and efficient.”

– David w.

Gas Furnace Maintenance in Grayslake, IL 60030

“Every experience I have had with Millers has been exceptional, this last one isn't any different! From my initial call to the tech doing the service, they are friendly and professional and I will continue to recommend them to all of our friends and neighbors.”

– dean f.

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“great service in a very timely manor with friendly technition”

– Bob B.

Gas Furnace Maintenance in Grayslake, IL 60030

“Service tech was prompt & on time. Very thorough & curteous.”

– Mike R.

Gas Furnace Maintenance in Grayslake, IL 60030

“Technician was on-time, worked quickly, friendly and answered my questions. Scheduled maintenance was straightforward and I am satisfied with Miller’s Area Heating & AC.”

– Andrew K.

Gas Furnace Maintenance in Grayslake, IL 60030

“The technician was prompt, friendly, and efficient. Working with the office is a joy as they are always so helpful and call back / send info quickly.”

– Vincent S.

Miller's Area Heating proudly provides HVAC service to Grayslake, Libertyville, Round Lake, Wildwood, Ingleside, and the surrounding Illinois communities. Visit our service area page for more coverage details, call us at 847-223-0211, or request service online today.