Furnace Installation in Columbia, TN
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Maury County will get in touch.
Tell us about the job
It takes about a minute.
Maury County asks a lot from a furnace
Winter nights here average 30°F, and homes need heat from October through April, seven months of the year. That's most of the year for a furnace to start up, run, and shut off without a problem.
Most homes in the area heat with electricity, and the power doesn't always stay on. Tennessee saw 20% of households lose power for 24 hours or more in 2024, and this area has logged 9 winter storms and 104 damaging wind events over the past ten years. Any furnace installed now has to hold up through storms as well as cold nights. If it's a gas furnace and it's non-weatherized, federal rules require it to reach at least 80 percent AFUE.
- 7 months
- October through April, your furnace is on duty
- 30°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
- What size furnace does my house need?
- The right size depends on your square footage, how well the house is insulated, your ceiling height, and how many windows you have, so there is no single number that fits every home. A furnace that is too big cycles on and off too fast and never runs long enough to heat evenly. One that is too small runs constantly and still can't keep up on the coldest nights. A contractor will run a load calculation on your house and size the furnace to match it, not just swap in whatever size is already there.
- How do I know it's time to replace my furnace?
- Watch for rooms that stay cold no matter what you set the thermostat to, a furnace that's cycling on and off more than it used to, or repairs that keep coming back. An older furnace nearing the end of its expected life is more likely to fail on the coldest night than a newer one. With heat needed here from October through April and winter lows averaging 30°F, a furnace that's struggling now will only fall further behind as the season goes on. If yours is old and needs its second or third repair in a year, replacing it is usually the safer call.
- Is a high-efficiency furnace worth it?
- It depends on how much you run your furnace and how long you plan to stay in the house. Since homes here need heat for 7 months of the year, a furnace runs a lot more than it would somewhere with a shorter winter, and that extra runtime is where higher efficiency pays off over time. Every furnace built since November 2015 already has to hit at least 80 percent AFUE, so the real question is whether it makes sense to go beyond that minimum. A contractor can walk through the options for your house and what each one costs to install.