A window view from inside a home showing a snow-covered suburban street with bare trees, evergreen shrubs, and a neighboring house during a winter snowstorm.

Furnace Installation in Sheridan, WY

A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Sheridan County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An empty unfinished basement containing a forced-air furnace with overhead ductwork, exposed ceiling joists, and a single hanging light bulb.

Ten months of heat a year in Sheridan County

Furnaces here run from September through June. That leaves about two months when the house doesn't need one. Winter nights average 13°F, and a new furnace has to hold a house steady against that, night after night, for most of the year.

Power doesn't always stay on through a storm. Wyoming saw 8% of households lose power for 24 hours or more in 2024, and Sheridan County has logged 54 winter storms and 64 damaging wind events over the last ten years. Just over half the homes here heat with gas. Any non-weatherized gas furnace built since November 2015 has to meet 80.0 percent AFUE, so that's the floor a new installation starts from.

10 months
September through June, your furnace is on duty
13°F
the average winter night it heats against
53%
of homes here heat with gas, so most furnaces here burn gas
80% AFUE
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house with a dark shingled roof, showing interior rooms with furniture, a ducted air distribution system, a tall vertical flue pipe, and a gray furnace unit outside the wall.
Your furnace works hardest from October through April.

NOAA nClimDiv, 1991–2020 normals

A gas furnace and sheet-metal air handler unit installed in an unfinished concrete basement.

A high-efficiency gas furnace would save about $130 a year to run in Sheridan County compared with a gas furnace.

  • A high-efficiency gas furnace$590 a year
  • A gas furnace$720 a year

Estimates for a typical Sheridan County home, from EIA household energy data, Wyoming fuel prices and NOAA climate normals. Your home will differ.

What size furnace does my house need?
A contractor needs to run a load calculation on your house to answer that, since square footage alone does not tell the whole story. Insulation, window count, ceiling height, and how the place is laid out all change the number. With heat needed here from September through June, a furnace that is sized wrong will show it fast, either running long stretches without catching up or shutting off before the house evens out. An undersized furnace wears itself out trying to keep up on the 13°F nights, and an oversized one cycles on and off too often and wears out early too. Get the calculation done rather than matching the old furnace's size, since it may have been wrong from the start.
How do I know it's time to replace my furnace?
Watch for a furnace that cycles more often than it used to, rooms that used to heat evenly now not doing so, or a gas bill climbing without a clear reason. Once repairs start stacking up, replacing makes more sense than continuing to patch an aging furnace. A furnace here is working nearly 10 months a year, so wear shows up sooner than it would somewhere milder. If yours is old and struggling to keep the house warm on the coldest nights, that is the sign to stop waiting.
Is a high-efficiency furnace worth it?
For a house that needs heat 10 months a year, a high-efficiency furnace has a lot more months to earn back the difference than one running just a few months a year. Any non-weatherized gas furnace made since November 2015 has to hit at least 80 percent AFUE, so the real choice is between that baseline and a furnace rated higher. The higher-rated furnace burns less gas to make the same heat, which matters most in a place where the furnace runs this many months and the winter lows sit around 13°F. A contractor can walk through the actual models and ratings for your house.