It’s 15 to 20 years old or older
Most furnaces last 15 to 20 years. Past that, parts get harder to find, efficiency drops and breakdowns get more frequent.
AFFORDABLE AIR HEATING & COOLING
Reliable heat for Ohio winters, sized for your home.
When your furnace is aging, unsafe or costing more to keep running than it’s worth, it’s time to look at a replacement. Affordable Air has replaced gas, propane and electric furnaces across Chillicothe and Southern Ohio since 2006. We’ll recommend the right system, explain every option and give you a free written estimate.
Got a replacement quote from someone else? Get a free second opinion.

WEIGHING YOUR OPTIONS
Most furnaces last 15 to 20 years. Past that, parts get harder to find, efficiency drops and breakdowns get more frequent.
A cracked heat exchanger can let carbon monoxide into your home. On most older furnaces, it means replacement, not repair.
If you’re calling for service every winter, the repair bills can add up faster than you’d expect.
Older furnaces can run at 80% efficiency or less. Many new furnaces convert 95% or more of their fuel into heat.
Cold rooms, drafty spots and a furnace that runs nonstop can mean the system is undersized, worn out or fighting ductwork problems.
These can signal combustion problems that need immediate attention. Make sure your carbon monoxide detectors are working.
THE EQUIPMENT IS ONLY PART OF THE PICTURE
You bring your comfort goals. We bring the technical know-how to evaluate your home and explain the options.
We size your new furnace with a load calculation, not by matching the old one. An oversized furnace short-cycles, wears out faster and leaves temperature swings; an undersized one runs nonstop on the coldest days.
Natural gas, propane and electric furnaces each make sense in different homes. For homes on propane or electric heat, we’ll also show you how a heat pump or dual-fuel system compares. See heat pump vs. furnace.
Standard-efficiency furnaces cost less upfront; high-efficiency condensing furnaces cost more and save more on fuel, especially with propane. High-efficiency models need PVC venting and a condensate drain, which we’ll plan for.
Two-stage and modulating furnaces run longer at lower output, which means quieter operation, more even temperatures and less stop-and-start wear.
Your furnace’s blower also moves air for your AC. If your air conditioner is aging too, replacing both together ensures they’re designed to work as one.
We inspect your furnace, venting and safety controls before recommending anything, and give you the price in writing. If a repair still makes sense, we’ll say so—and if replacement is the better call, we’ll tell you why.
WEIGHING YOUR OPTIONS
Most furnace problems under 15 years old are worth repairing, and we’ll tell you when they are. When a furnace is near the end of its life, needs a major repair like a heat exchanger or control board, or has become a safety concern, replacement usually makes more sense.
Use the $5,000 rule as a gut check: multiply the repair cost by the furnace’s age. If the result tops $5,000, start looking at replacement. Our guide to repair or replace explains more.
Most furnace replacements in our area fall in these ranges, installed:
| System | Typical installed price |
|---|---|
| 80% gas furnace, single stage | $3,000–$4,500 |
| 96% high-efficiency gas furnace, single stage | $3,800–$5,500 |
| 96–97% furnace, two-stage or variable speed | $4,800–$7,000 |
Typical installed price ranges for Chillicothe-area homes as of October 2026. Your exact price depends on your home, system size and installation needs. Estimates on new systems are free, and financing is available for all credit types (0% APR for 72 months, with approved credit).
CLEAR SCOPE. INFORMED DECISIONS.
The price of a new furnace depends on its size, efficiency rating, single-stage vs. two-stage vs. modulating operation, fuel type, venting changes, ductwork condition, whether a new AC coil is needed and installation details like the thermostat, gas line work and permits. Every estimate is free and in writing.
Request your free estimateFROM FIRST CONVERSATION TO EVERYDAY COMFORT
We look at your home, your current furnace, venting and ductwork, and ask what matters to you.
You get a written estimate with clear choices and exactly what’s included.
Most furnace replacements are completed in one day. We remove and haul away the old equipment.
We test the furnace, check combustion and safety controls, register your warranty and show you how to use your new system.
BRANDS WE SERVICE
Affordable Air is a Trane Comfort Specialist and an authorized Day & Night dealer, and we install Goodman equipment. We install gas, propane and electric furnaces and can pair them with a heat pump for dual-fuel efficiency. See brands we install.

The local people behind your home comfort.
YOUR HVAC CONTRACTOR. YOUR NEIGHBORS.
Affordable Air was founded in Chillicothe in 2006 and still works out of our shop at 949 East Main Street. We replace furnaces in historic downtown homes, basements across Ross County and propane-heated farmhouses throughout Pickaway, Pike, Scioto, Jackson, Fayette and Vinton counties.
Communities we serve: Chillicothe · Circleville · Waverly · Washington Court House · Jackson · Portsmouth · All service areas
About Affordable AirBEFORE YOU CALL
Most installed gas furnaces in our area run $3,000–$4,500 for a standard 80% furnace, $3,800–$5,500 for a 96% high-efficiency furnace and $4,800–$7,000 for a two-stage or variable-speed model. Your exact price depends on your home and installation needs, and estimates are free.
Most furnaces last 15 to 20 years with yearly maintenance.
Most replacements are finished in one day. Venting changes, fuel conversions or ductwork work can add time.
Often, especially if you heat with propane or plan to stay in your home for years. We’ll show you the expected savings so you can decide.
It depends on your fuel options and home. Many Southern Ohio homeowners choose a dual-fuel system that pairs a heat pump with a furnace.
Yes. We replace and install propane furnaces throughout rural Southern Ohio.
Yes. Financing for all credit types, including 0% APR for 72 months, with approved credit.
COMFORT CLUB
The Comfort Club is $270 a year and includes an annual furnace tune-up, an annual A/C tune-up, priority service, 10% off repairs and special access to deals.
KEEP EXPLORING
LET’S MAKE YOUR HOME COMFORTABLE AGAIN
Need a repair, a replacement estimate or routine maintenance? Start here.
(740) 779-0079Prefer to text? (740) 273-8551
For urgent service, please call.