Furnace Installation in Rolla, MO
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Phelps County will get in touch.
Tell us about the job
It takes about a minute.
What a Rolla winter asks of a new furnace
Rolla needs heat from October through April, seven months of the year. Winter nights average 25°F, so a new furnace has to hold up through a long, cold season, not just a few cold snaps.
Most homes in Phelps County run on electric heat, and the power here doesn't always stay on. Missouri saw 19% of households lose power for 24 hours or more in 2024, and the last ten years brought 10 winter storms and 56 damaging wind events. That is worth weighing when you decide what kind of furnace goes in and how it runs when the electricity does not. Any new gas furnace installed also has to meet the federal minimum of 80 percent AFUE.
- 7 months
- October through April, your furnace is on duty
- 25°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?
- A contractor has to work this out room by room, not off square footage alone. Sizing depends on how much heat your house loses through its walls, windows, and attic, and how much air leaks in and out. A furnace that's too big will short cycle and wear out faster, and one that's too small will run constantly and still leave you cold on the coldest nights here. This is why a proper load calculation matters more than a rule of thumb.
- How do I know it's time to replace my furnace?
- Watch for uneven heat, rooms that stay cold, a furnace that cycles on and off more than it used to, or a jump in what you're paying to run it. Age matters too. An older furnace nearing the end of its life will need repairs more often, and those repairs start costing more as parts wear out together. With heat needed here from October through April, and winter nights averaging 25°F, a furnace that's struggling now is only going to get worse once the cold sets in. If a repair keeps coming back, that's usually the sign to stop patching it.
- Is a high-efficiency furnace worth it?
- It depends on how many months a year your furnace runs, and here that's seven, October through April. Every non-weatherized gas furnace made since November 2015 already has to hit at least 80 percent AFUE, so the real question is whether it's worth going higher than that minimum. A high-efficiency furnace burns less gas to make the same heat, which matters more the longer your heating season runs. A contractor can walk through what your current furnace is rated at and what moving up would actually change for your house.