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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 Maintenance in Mundelein, IL 60060

“Dan was awesome. Great job, all seems to be working fine. Thanks!” – Joyce L.

Gas Furnace Maintenance in Grayslake, IL 60073

“Service person was very informative an made me comfortable when he left!”

– Robert S.

Gas Furnace Installation in Spring Grove, IL 60081

“Fantastic! I had a very challenging installation for area heating . I needed not only a furnace but it also had to be whisper quite. Very professional installation and the building comfort exceeded my expectations.

– Gordon R.

Gas Furnace Replacement in Round Lake Beach, IL 60073

“Everyone I dealt with from beginning to end was very nice; Friendly and professional. I am glad to support a local business.”

– Karrie A.

Gas Furnace Maintenance in Grayslake, IL 60030

“Professional & personal, willing to take the time I need and educational.”

– Jacquelyn S.

Gas Furnace Repair in Grayslake, IL 60030

“I first dealt with Kevin who came out to check out the problem, he was great. Curt came by to loan me a couple of heaters to use until my part came in and she was also great. Then Brian came and fixed my furnace and got me up and running again, so obviously he was great too! Everyone I dealt with was very knowledgable and professional. Things were done in a timely manner. Everything was put back in place and very clean and tidy. I'm very happy with Miller's Area Heating & Air Conditioning and will be calling to set up a service package in the near future.”

– Dawn H.

Gas Furnace Maintenance in Round Lake Park, IL 60073

“No problems.”

– Jane B.

Gas Furnace Maintenance in Grayslake, IL 60030

“Miller's Area Heating has been a long time business in the Grayslake area. John is a straight forward guy and is reflected in the service technicians that are part of the company. Easy to work with and no pressure advice. Glad there is a company that one can trust to get things done right without trying to sell you service you don't need.”

– Ed B.

Gas Furnace Maintenance in Round Lake Beach, IL 60073

“Furnace malfunctioning, also needed new thermostat. Called today around 1pm. Tech was there at a little after 2pm. Everything was fixed and he was gone by 3pm. Perfect. Thanks.”

– Jeff L.

Gas Furnace Replacement in Gurnee, IL 60087

“Replaced Furnace and A/C with a matched Trane system. Miller's proposal was one of three. Selected them based on my Home Inspector's recommendation, their price, quality of proposal information, and follow up. Install was done on date promised, very timely and efficient. Excellent post-install follow up.

The system runs very quietly and provides extremely even, comfortable HVAC throughout our 2300 sf ranch, much better than any of my previous 4 homes. And no more loud blasts of air when the system kicks on!”

– Joe 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.