Furnace Replacement and Installation in North Georgia

When a furnace stops being worth repairing, the replacement has to be sized, piped, vented and checked for your house, not just set in place. Comfort Medics replaces gas furnaces for homeowners across North Georgia from our base in Kingston. We’re licensed and insured (GA. REG. CR2011437), the owner has 17 years in HVAC, and a real person answers our phone 24/7.

Get a Free Furnace Estimate Call (470) 360-8887

Repair or Replace? We Price Both

If your furnace has quit or keeps needing repairs, we check it and give you pricing on both options so you can decide. A repair visit has a $125 service fee, credited toward the repair when you go ahead with the repair or a new system. Comfort Club members don’t pay service fees. If you already have a replacement quote from someone else, a second opinion before you decide is free.

What We Look At During Your Free In-Home Estimate

A new furnace has to move the right amount of air through your ductwork and vent safely, so the estimate covers more than the cabinet:

• your current furnace and where it sits (attic, basement, crawlspace or closet)
• the ductwork it connects to
• the gas line
• the flue and venting
• the electrical and condensate needs of the new equipment

You get an exact, upfront price for your home before any work is scheduled. Removal and disposal of your old furnace is included.

Installation Day: How We Check a New Furnace

We size the new furnace with a load calculation for your home. We pull the permit on every replacement and install to the manufacturer’s requirements. Then we check the work with measurements, as they apply to your equipment:

• temperature rise across the furnace
• gas pressures
• flue sizing and venting
• airflow and static pressure in the ductwork
• condensate drainage on high-efficiency furnaces

These are the same checks in the Comfort Medics Installation Standard that we use on every new system.

Attic, Basement and Closet Furnaces

Many furnaces in our area sit in attics, basements or closets. We replace them in place and plan the venting, condensate and access for that location at the estimate.

Furnace Prices (as of November 2026)

Installed starting prices for our furnace replacements in North Georgia:

• Furnace only: starting at $4,000 (typically $4,000 to $8,000)
• Evaporator coil (if your AC coil sits on the furnace and needs replacing too): starting at $2,000 (typically $2,000 to $4,000)
• Complete system (furnace and air conditioner): starting at $7,000 (typically $7,000 to $18,000)

Your final price depends on your home’s size, the capacity it needs, the efficiency level you choose, ductwork, gas and venting work, where the furnace sits, and permit fees. For the full breakdown, see our HVAC replacement cost guide for North Georgia.

Replacing Your AC at the Same Time?

It depends on the age and condition of each one. At the free in-home estimate we look at both and price each option, so you can decide what makes sense for your home. If you’d rather heat with electricity, ask us to price a heat pump installation as well. We also install dual-fuel systems (a heat pump paired with a gas furnace) and 95%+ high-efficiency furnaces.

Brands, Comfort Add-Ons and Warranty

We install Goodman and other major equipment brands (see HVAC brands we install). As an authorized Aprilaire dealer, we can add a whole-home humidifier or air cleaner while the furnace is being replaced.

Every new furnace comes with:

• a 10-year manufacturer parts warranty on qualifying equipment (registration may be required)
• a 10-year labor warranty from Comfort Medics
• our lifetime craftsmanship guarantee

Optional third-party extended coverage, such as JB Warranties, is also available.

Financing a New Furnace

If monthly payments work better, financing is available through FTL Finance and other lenders, for new systems and repairs, subject to credit approval. See how financing works.

No Heat Right Now?

Call (470) 360-8887. We offer 24/7 emergency service, and a person answers. If the furnace can be repaired safely, we’ll tell you. If it can’t, we’ll price a replacement on the spot.

Where We Replace Furnaces

Based in Kingston, GA, we replace furnaces in Kingston, Rome, Cartersville, Calhoun, Adairsville, Woodstock, Canton, Marietta, Acworth, Kennesaw, Smyrna, Dallas, Milton, Roswell, Jasper, Ball Ground, Ellijay and Dalton. See all of our service areas.

Furnace Replacement FAQ

How much does a new furnace cost?

As of November 2026, our installed furnace-only replacements start at $4,000 and typically run $4,000 to $8,000. You get an exact price after a free in-home estimate.

How long does a furnace replacement take?

Most changeouts take about 2–3 hours. Ductwork or electrical changes, when they’re needed, can add time.

Do you pull a permit?

Yes. We pull the permit on every replacement.

Can you replace a furnace that’s in the attic?

Yes. We replace attic, basement, crawlspace and closet furnaces, and we plan venting, condensate and access for that spot at the estimate.

Do I have to replace my AC too?

Not always. It depends on the age and condition of each. We price each option so you can choose.

What warranty comes with a new furnace?

A 10-year manufacturer parts warranty on qualifying equipment (registration may be required), a 10-year labor warranty from Comfort Medics and our lifetime craftsmanship guarantee.

Is the estimate really free?

Yes. In-home estimates for a new system are free. A second opinion on someone else’s replacement quote is also free.

Get Your Free Furnace Estimate

Call (470) 360-8887 or send the form and we’ll call you back.