Furnace Installation in Kellogg, ID
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Shoshone County will get in touch.
Tell us about the job
It takes about a minute.
Kellogg asks a furnace to work most of the year
Homes in Kellogg need heat from September through June, ten months a year. Winter nights average 22°F from December through February, and the furnace has to hold up through the cold months and the long stretch of shoulder season around them.
More than half of homes here heat with gas, and any new non-weatherized gas furnace has to meet 80.0 percent AFUE, the federal minimum since November 2015. Power loss is worth planning for too. Shoshone County has logged 189 winter storms and 13 damaging wind events over the last ten years, and across Idaho, 11 percent of households lost power for 24 hours or more in 2024.
- 10 months
- September through June, your furnace is on duty
- 22°F
- the average winter night it heats against
- 52%
- 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 $90 a year to run in Shoshone County compared with a gas furnace.
Estimates for a typical Shoshone County home, from EIA household energy data, Idaho fuel prices and NOAA climate normals. Your home will differ.
Idaho requires HVAC contractors to hold a state license.
The license is held by the contractor's business, tested and put on record with the state board, not issued fresh for each job they take on. So the license you're checking is the same one whether the job is a furnace, a heat pump, or an air conditioner.
For a furnace installation, that license is what backs the work itself, but the local building office still has a role. In most cities and counties, replacing a furnace needs a permit and an inspection once the job is done, and that inspection is what catches a bad gas connection before the furnace ever runs a full season. Gas heat is common here, with more than half of Shoshone County homes running on it, which is exactly why that inspection step matters on a job like this one.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- What size furnace does my house need?
- It depends on your square footage, your insulation, your ceiling height, and how many windows you have facing the cold. There's no single number that works for every house on your street, even ones built the same year. A contractor will do a load calculation, which looks at your home's actual heat loss rather than just its size, and that's what sizing should be based on. Too big a furnace short cycles and wears out faster. Too small won't keep up when it's 22 degrees outside, which is a normal winter night here.
- How do I know it's time to replace my furnace?
- Watch for rooms that won't warm up, a furnace that cycles on and off more than it used to, or a jump in your gas bill with no other explanation. Age matters too. Furnaces built after November 2015 have to hit at least 80 percent AFUE, so if yours is older than that and struggling, it's likely running well below that mark now. Homes here need heat from September through June, so a furnace on its way out doesn't get much of a break to hide the problem.
- Is a high-efficiency furnace worth it?
- It's worth asking about, especially given how much of the year your furnace runs here, ten months out of the year. A high-efficiency furnace pulls more heat out of the same amount of gas than an older, minimum-efficiency unit, which matters when it's working that many months. Whether the difference in upfront cost makes sense for your house is something a contractor can walk through with you, since it depends on your current furnace's condition and your gas use.


