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Furnaces

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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 Grayslake, IL 60030

“Very helpful and professional.” – Eric P.

Gas Furnace Repair in Gurnee, IL 60031

“Called and received an appointment on the same day. The service technician Kevin was polite and knowledgeable and fixed the issue all in a couple of hours. Well done!”

– Lisa S.

Gas Furnace Maintenance in Grayslake, IL 60030-2620

“Technician was very helpful and pleasant. Eliminated our concerns.”

– Mike & Marianne D.

Gas Furnace Maintenance in Vernon Hills, IL 60061

“timely and efficient!”

– renee p.

Gas Furnace Maintenance in Grayslake, IL 60030

“fast service and very satisfied”

– ron e.

Gas Furnace Maintenance in Grayslake, IL 60030

“fast service and very satisfied”

– ron e.

Gas Furnace Repair in Ingleside, IL 60041

“The heat exchanger had to be replaced, a big job. Work was completed with no problems in a reasonable length of time. The tech was very helpful in explaining what he was doing when I checked on the his progress. He also answered a number of questions I has before he got started and when he was done which I appreciated.”

– Joe S.

Gas Furnace Repair in Ingleside, IL 60041

“The tech resolved the problem quickly.”

– Joseph S.

Gas Furnace Repair in Round Lake Beach, IL 60073

“Blower motor needed replacing. Unfortunately it wasn't in stock locally. Had to wait over weekend for delivery. You lent us 4 space heaters to see us through. Part came in on Monday and was replaced that afternoon. Everything went well. You guys are reliable for sure. Thanks.”

– Jeffrey L.

Gas Furnace Installation in Lindenhurst, IL 60046

“after shopping prices and products Miller's went above and beyond the call to earn my business.first meeting with Holly their project manager and going over just exactly what my home needed,then picking out the correct furnace,humidifier,air conditioner,and wifi thermostat to replace my aging units she submitted a proposal that after some fine tuning was acceptable.then i was contacted and we set up a time for installation.their techs Martin and Juan arrived on time and quickly got the project underway.they were neat,put drop clothes over their pathway and answered all my questions.the install went without a hitch and the new system is a thing of beauty.products were installed and they cleaned up all garbage so it looked like nothing was displaced.i will gladly refer Millers to friends and family who is looking for a reliable hvac company.”

– david t.


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.