Furnace Installation in Fairmont, WV
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Marion County will get in touch.
Tell us about the job
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Fairmont needs a furnace built for eight months of winter
Furnace season in Fairmont runs from October through May. That is eight months of the year your furnace has to work, on nights that average 24°F. A furnace put in here is not a backup for a few cold weeks. It is what keeps the house livable most of the year.
Most homes in Fairmont heat with gas, and any new gas furnace made today has to hit at least 80 percent AFUE by federal law. Power is worth planning around too. Across West Virginia, more than a third of households lost power for at least a day in 2024, and Marion County has seen its share of winter storms and damaging wind over the past ten years. A furnace that starts back up on its own once power returns is one less thing to worry about when a storm comes through.
- 8 months
- October through May, your furnace is on duty
- 24°F
- the average winter night it heats against
- 68%
- 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 Marion County compared with a gas furnace.
Estimates for a typical Marion County home, from EIA household energy data, West Virginia fuel prices and NOAA climate normals. Your home will differ.
West Virginia requires HVAC contractors to hold a state license.
The license comes from the Commissioner of Labor, and it covers the contractor, not this particular job. The state tested that contractor and keeps them on record before they can take on work like this.
The license is what backs the person doing the work, but the furnace itself still goes through the local building office. In most cities and counties, a furnace installation needs a permit and an inspection once the work is done. That inspection is where a bad gas connection gets caught, and it matters here since 68.1% of homes in Marion County heat with gas.
Source: West Virginia Legislature
- What size furnace does my house need?
- It depends on your square footage, how well the house is insulated, your ceiling height, and how much window area you have facing outside. A furnace that's too big will short cycle, turning on and off often instead of running steady. One that's too small will run constantly and still leave rooms cold on a 24°F night. A contractor works this out with a load calculation that looks at your house room by room, not a chart based on square footage alone. That calculation matters more here than in a milder climate, since your furnace has to keep up from October through May.
- How do I know it's time to replace my furnace?
- Age is the first thing to check. An older furnace works harder to do the same job, and parts get harder to find as it gets on in years. Watch for signs alongside the age. Rooms that used to heat evenly now have cold spots, the burners cycle more often than they used to, or a repair bill comes back and the technician says the heat exchanger or the blower motor is going. If your furnace is old and needs a repair heading into winter, replacing it before it fails on a cold night is usually the safer call in a place where lows average 24°F for months at a time.
- Is a high-efficiency furnace worth it?
- It depends on how many months your furnace runs and what you're replacing. Homes here need heat from October through May, eight months of the year, so a furnace here logs a lot more hours than one in a milder climate. Furnaces made since November 2015 have to hit at least 80 percent AFUE. High-efficiency models go higher than that, which means less fuel burned for the same heat. Whether the higher upfront cost pays off for your house is something a contractor can lay out once they know your current furnace and your home's heating load.