How Long Does a Furnace Replacement Take?
A straight furnace swap is usually done in one day. Venting changes, a chimney liner, gas line or duct work, and the permit inspection add time. What to expect.
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A furnace replacement in the Town of Oak Grove runs $4,500–$9,500 installed, with the flat rate written after a Manual J. Most homes here burn propane, and since propane heat typically costs more than natural gas heat, a 96–98% AFUE furnace pays back sooner. Focus on Energy is the statewide program.
Replacing a furnace in Oak Grove starts with the fuel. With propane in most homes, a condensing furnace usually earns its extra cost faster than it would on natural gas, and pairing it with a cold-climate heat pump lets the propane burn only in real cold. Homes heated by an electric furnace or baseboard are good candidates for a heat pump with electric or propane backup instead.
Venting needs care on exposed sites. Two PVC pipes through a side wall have to clear drifting snow and sit where bluff-top wind won't push exhaust back toward the intake. Condensate is mildly acidic, so on homes with septic systems we talk through where it drains and whether a neutralizer makes sense. Oak Grove uses a contracted building inspector, and Wisconsin's Uniform Dwelling Code sets the statewide rules for homes, so we confirm what the permit requires before scheduling.
Updated September 23, 2026
An installed furnace from us runs about $4,500–$9,500 in Town of Oak Grove: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in Town of Oak Grove as in every town we serve. See the furnace replacement cost guide.
Wisconsin's statewide Focus on Energy program is the main source of incentives, working through your participating utility. If Pierce Pepin Cooperative Services supplies your electricity, it lists heat pump rebates and a dual-fuel off-peak program and partners with Focus on Energy; check your bill, since the provider depends on the address. Propane-heated homes may qualify differently from natural gas customers, so tell Focus on Energy which fuel you use. Its income-qualified HEAR rebates require an IRA Registered Contractor. Rebate programs change every year, so check the utility's current terms before you buy.
Our guides: Xcel and CenterPoint rebates, heat pump rebates.

More detail on our furnace installation page.
Yes, Focus on Energy is Wisconsin's statewide efficiency program. Its offers change, and the income-qualified Home Energy Rebates it runs generally require an IRA Registered Contractor, so check the current rules and ask whether your project needs one before you buy. Minnesota utility rebates don't apply on this side of the river. We help with the paperwork where the program allows it.
Whatever a Manual J says, and it's often less than the old nameplate. Newer rural homes here are built tighter than the older farmhouses, and a walkout's buried walls lose less heat than exposed ones. An oversized propane furnace short-cycles, which wastes fuel and wears the igniter and inducer faster. We figure the load room by room against a Wisconsin winter design day and size the furnace to that.
A straight furnace swap is usually done in one day. Venting changes, a chimney liner, gas line or duct work, and the permit inspection add time. What to expect.
Read the guideReplacing the furnace and AC together in Minnesota costs $9,700–$19,300 installed with us. Matched coils, AHRI ratings, and when to split the job instead.
Read the guideConverting an oil furnace or boiler to gas in Minnesota: typical national costs, getting gas to the house, venting, the oil tank, hot water and rebates.
Read the guideFurnace replacement in Town of Oak Grove? Call or send a request.