Gas Furnaces

Furnace service.

K Komfort Heating & Cooling is the leading HVAC company in Grafton, WI, 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 Grafton, WI 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 K Komfort Heating & Cooling, and we can set up an appointment to calculate the furnace size you might need.

Gas Furnace Repair in Milwaukee, WI 53218


“Our heat in the office went out when it was 20F. KKomfort technicians arrived onsite within an hour, quickly diagnosed the issue, located and replaced the damaged part and restored the heat to our building. If you are looking for an honest and fair heat and air conditioning repair option — I highly recommend KKomfort!”

- Alex S.

Air Conditioner and Furnace Installation


“The quote was accurate and reasonable The installers showed up on time ready to work, they were knowledgeable courteous, and professional. Starting at 8:30 they completed the job at 5:00 new furnace and air conditioner all in one day. Program my smart thermostat and answered all my questions. After the installation was overall work areas were spotless. When making a large investment It’s a good idea to get several quotes. Do you yourself a big favor and make sure K-Komfort in Grafton is one of them”

- Mike B.

Need Furnace Service?

Contact the experts at K Komfort Heating & Cooling.

Call us at 262-375-0075!