Furnace Installation in Maryville, TN
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Blount County will get in touch.
Tell us about the job
It takes about a minute.
Seven months of heat, and winter nights near 31°F
Maryville needs heat from October through April. That is seven months of the year your furnace has to work, not just a few cold snaps. Winter nights average 31°F, so the burner is cycling on and off most nights through the whole stretch.
Most homes here heat with electricity, and the power does not always stay on. Blount County has seen 20 winter storms and 107 damaging wind events over the past ten years, and a fifth of Tennessee households lost power for at least 24 hours in 2024 alone. A new gas furnace is worth asking about for exactly that reason. Any non-weatherized gas furnace built since November 2015 has to hit at least 80 percent AFUE, so that efficiency comes standard now no matter which one goes in.
- 7 months
- October through April, your furnace is on duty
- 31°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 home's square footage, how well it's insulated, your window count, and your ceiling height, so there's no single number that fits every house. A contractor works this out with a load calculation, not a tape measure and a guess. Going too big is as much a problem as going too small. An oversized furnace cycles on and off too fast, which wears out parts sooner and leaves rooms feeling uneven, while an undersized one runs constantly on the coldest nights and still can't keep up. With winter lows here averaging 31°F, that load calculation should account for real cold, not just a mild day.
- How do I know it's time to replace my furnace?
- Watch for uneven heat between rooms, a furnace that runs longer than it used to, or repair bills that keep coming back. If your furnace was manufactured before November 19, 2015, it may not meet the 80 percent AFUE minimum required now, which means a newer unit burns less fuel for the same heat. A furnace that struggles to keep up shows it fastest here, since homes need heat from October through April. If yours is already falling behind in the fall, it won't get easier to live with once nights are averaging 31°F.
- Is a high-efficiency furnace worth it?
- It depends on how much you heat and how long you plan to stay in the house. A high-efficiency furnace burns less fuel to produce the same heat, and with 7 months of heating season here, that difference gets used a lot more than it would somewhere with a short winter. The upfront cost is higher, and a contractor can price out both options for your specific house so you're comparing real numbers, not estimates. Furnaces built new already have to meet an 80 percent AFUE minimum, so ask a contractor how much higher efficiency would actually gain you over that baseline.