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 St. Louis Park furnace replacement costs $4,500–$9,500 installed with us, and the written flat-rate quote spells out the venting. That's the hard part here: close side yards limit where a 96–98% furnace's PVC can exit, and the water heater left on the old chimney may need a liner.
Replacing a furnace in St. Louis Park comes down to venting more than anything else. Moving from an 80% to a 96–98% condensing furnace means intake and exhaust pipes through the rim joist, and on narrow lots the obvious wall is often too close to the neighbor's windows, the gas meter or a walkway. The fallback is a roof penetration or a longer run to the back wall, which we plan before quoting so the price holds.
The water heater usually shared that chimney. Once the furnace leaves, the water heater's small, cool exhaust sits alone in a flue sized for two and can condense and draft poorly, so we price a liner or a power-vent water heater in the same quote. Low basements also limit cabinet height once an AC coil sits on top. Gas here is CenterPoint Energy, and its heating rebates let you pick your own dealer as long as the application goes in the same year as the install.
Updated September 23, 2026
An installed furnace from us runs about $4,500–$9,500 in St. Louis Park: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in St. Louis Park as in every town we serve. See the furnace replacement cost guide.
CenterPoint Energy (gas) and Xcel Energy (electric) run the standard rebates here: CenterPoint for high-efficiency furnaces and boilers with any dealer, Xcel for heat pumps and AC, some only through registered contractors. St. Louis Park adds its own Climate Champions for Homes cost share, which can add to utility rebates on cold-climate heat pumps and heat pump water heaters. It requires a Home Energy Squad planner visit before work begins and a rebate from Xcel or CenterPoint, and a furnace alone doesn't qualify. 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.
Sometimes. If no side wall or roof route works for PVC on a tight lot, or you're selling within a couple of years, an 80% furnace on a properly lined chimney is a legitimate choice, at roughly $4,500–$6,000 installed with us. For most owners staying put, a 96–98% furnace at roughly $6,500–$9,500 costs less to run over a Minnesota winter. We quote both when both fit.
Often. Many of these houses carry a furnace sized long ago for a leakier house, before new windows and attic insulation went in. A Manual J load calculation works out the heat loss room by room, and the answer is frequently below the old nameplate. A right-sized furnace runs longer, quieter cycles. It won't fix an unducted upstairs, though; those rooms need their own solution.
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 guideThe quietest gas furnaces from Lennox, Carrier and Trane, the features that really cut noise, and the duct fixes that quiet any furnace in a Minnesota home.
Read the guideFurnace quit in a cold snap? How to tell if the PVC intake or exhaust is iced or drifted shut, clear it without cracking the pipe, and keep it from recurring.
Read the guideFurnace replacement in St. Louis Park? Call or send a request.