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 Ingleside, IL 60041

“Shane was very through with his troubleshooting and explanation.” – Nancy W.

Gas Furnace Repair in Grayslake, IL 60030

“Your technician took the time to find the problem – the humidifier solenoid, not the blower as we thought – and then made a trip back to your office for the part, and then returned and did an excellent job of installing it. Now, with 0 degrees outside, we’re warm and comfortable inside. Thanks!”

– Mike C.

Gas Furnace Maintenance in Libertyville, IL 60048

“Technician was friendly and efficient. Price was good. Would contact Miller’s for any future heating and A/C needs.”

– Angela G.

Gas Furnace Maintenance in Grayslake, IL 60030

“prompt and efficient”

– june s.

Gas Furnace Repair in Round Lake, IL 60073-5924

“Excellent service, very professional and courteous.”

– Francisco A.

Gas Furnace Maintenance in Grayslake, IL 60030

“Josh was very polite and informative.”

– Alice W.

Gas Furnace Maintenance in Grayslake, IL 60030-2620

“Fall Maintenance technician was thorough & informative as we expect from Miller’s”

– Mike D.

Gas Furnace Maintenance in Lake Villa, IL 60046

“This morning Shane arrived on time and diagnosed the issue with our furnace which turned out to be a failed ignitor. Shane had the replacement part in his van. The service took less than an hour and we couldn’t be happier. Our home is nice and warm again in time for New Years Eve. Thanks again Miller Area heating for your prompt service! Best regards and Happy New Year! Mike & Cheryl”

– Michael F.

Gas Furnace Maintenance in Wildwood, IL 60030

“Service was good! Your technician was excellent.”

– Joseph T.

Gas Furnace Maintenance in Waukegan, IL 60087

“Great service! Office called when technician was on his way. Technician was friendly and efficient. He wore a mask and foot covering. Will use this company in the future.”

– Vicki M.

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.