Furnace Installation in Raymore, MO
A new furnace here will run from October through April every year. Tell us about the house, and a licensed contractor who covers Cass County will get in touch.
Tell us about the job
It takes about a minute.
What a Raymore winter asks of a new furnace
Your furnace runs from October through April here, seven months of the year. On winter nights that average 24°F, it has to keep cycling on for most of that stretch, not just on the coldest days. A furnace sized and installed right for that workload matters more here than in places where heat is only an occasional need.
More than half the homes in the area heat with gas, and any new non-weatherized gas furnace has to reach at least 80.0 percent AFUE under federal rules. Cass County has also logged 9 winter storms and 89 damaging wind events over the past ten years, and close to a fifth of Missouri households went at least a day without power in 2024. If your furnace relies on electricity to ignite or run its blower, that history is worth asking about when you plan the installation.
- 7 months
- October through April, your furnace is on duty
- 24°F
- the average winter night it heats against
- 55%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $160 a year to run in Cass County compared with a gas furnace.
Estimates for a typical Cass County home, from EIA household energy data, Missouri fuel prices and NOAA climate normals. Your home will differ.
- What size furnace does my house need?
- That depends on your square footage, your insulation, your ceiling height and how many windows you have, so there's no single number that fits every house. A contractor works this out room by room, not just from the square footage, because a poorly insulated house needs more furnace than a tight one the same size. Getting this wrong in either direction costs you. Too small and it runs constantly through those 24°F nights, too big and it short-cycles and wears out early. Ask for a load calculation, not a guess based on your old furnace's size.
- 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 repairs that keep coming back. With heat needed here from October through April, a furnace that's struggling early in that stretch is telling you something about how it will handle the coldest nights, when lows average 24°F. If a contractor has already been out more than once this season for the same problem, that's usually the sign to stop repairing and start replacing. A furnace that can't keep up now is not going to get more reliable as the winter goes on.
- Is a high-efficiency furnace worth it?
- Every new non-weatherized gas furnace sold today has to hit at least 80.0 percent AFUE by law, so the real question is whether it's worth going higher than that. With heat running seven months a year here, more of what you burn turning into heat in your house instead of going out the flue adds up over that stretch. High-efficiency furnaces also vent differently, through PVC pipe instead of a metal flue, which can affect installation depending on where your furnace sits. A contractor can walk you through what fits your house and what the venting change would involve.