Furnace Installation in Rock Springs, WY
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Sweetwater County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heat a year in Rock Springs
Winter nights here average 11°F from December through February, and most homes in Sweetwater County need heat running from September through June. That is ten months of work for a furnace, not just the coldest stretch of the year.
A new furnace installed here has to hold up to that stretch of cold and the wind that comes with it. Wyoming saw 87 winter storms and 185 damaging wind events over the past ten years, and 8% of households in the state lost power for at least a day in 2024. Any gas furnace built new has to meet a federal minimum of 80 percent AFUE, and most homes here already heat with gas.
- 10 months
- September through June, your furnace is on duty
- 11°F
- the average winter night it heats against
- 81%
- 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 $130 a year to run in Sweetwater County compared with a gas furnace.
Estimates for a typical Sweetwater 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?
- The right size comes from a load calculation, not the square footage alone. A contractor measures your walls, windows, insulation, and ceiling height, then factors in how cold it gets here, down to 11°F on a winter night, to figure out how much heat your house actually loses. A furnace that's too big cycles on and off and wears out early. One that's too small runs constantly and still can't keep up on the coldest nights. There's no shortcut that replaces this measurement for your specific house.
- How do I know it's time to replace my furnace?
- Watch for a furnace that struggles to keep the house warm on the coldest nights, one that cycles on and off more than it used to, or one that needs a repair every season. Age matters too, and with heat needed here from September through June, yours puts in 10 months of work a year. If the cost of repairs starts adding up, or the furnace is old enough that parts are getting harder to find, replacement usually makes more sense than another patch job. A contractor can look at the specific unit and tell you where it stands.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and how much you're paying for gas now. Every new non-weatherized gas furnace sold today has to reach at least 80 percent AFUE, so even a standard model wastes less fuel than older units did. A high-efficiency furnace goes above that baseline, burning less gas to make the same heat, which matters most somewhere that needs heat 10 months out of the year. The higher the efficiency rating, the more of the unit's cost goes toward that extra performance, so it's worth weighing against how many years you'll be using it.