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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Replacing a Lake Elmo furnace costs $4,500–$9,500 installed with us, roughly $4,500–$6,000 at 80% AFUE and $6,500–$9,500 at 96–98%. Whether Xcel Energy or CenterPoint Energy supplies your gas decides which rebate applies. Quotes are written, flat-rate and sized with a Manual J load calculation.
Furnace replacement in Lake Elmo is really three different jobs. A manufactured home in Cimarron needs a furnace listed for manufactured housing, fitted to the closet and the floor duct opening, with roof venting made for it. An older home around the Old Village or the Tri-Lakes moving from an 80% furnace to a condensing one needs a PVC route out a side wall, a condensate drain, and an answer for the water heater that stays behind in the chimney, usually a liner or a power-vent model. A large rural home or a newer house may have zoning or two furnaces, and a Manual J often shows the originals were bigger than the house needs.
The gas utility decides the rebate. Most addresses use Xcel Energy's heating equipment rebates; in the small CenterPoint Energy area, CenterPoint's furnace rebates let you pick your dealer, and the application belongs to the year the furnace goes in. We pull the mechanical permit.
Updated September 26, 2026
An installed furnace from us runs about $4,500–$9,500 in Lake Elmo: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in Lake Elmo as in every town we serve. See the furnace replacement cost guide.
Every Lake Elmo address gets its electricity from Xcel Energy, so Xcel's AC rebates, Saver's Switch, AC Rewards and heat pump rebates are all on the table; Xcel pays the heat pump rebates through Trade Partner Network contractors, so check that requirement before signing. Gas programs follow your gas company. Most of the city uses Xcel's heating equipment rebates, while CenterPoint Energy's small area gets CenterPoint's furnace rebates, which let you choose your dealer, plus its ducted heat pump rebate for dual-fuel systems. 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.
For 2026, CenterPoint's heating rebates cover equipment installed January 1 through December 31, and the application has to be submitted that same year. A proposal or estimate doesn't count as proof of purchase, so keep the final invoice. The furnace needs an AHRI or ENERGY STAR listing with verified AFUE, and you can use any dealer. Addresses on Xcel gas apply through Xcel's program instead.
Mostly the venting and the drain. A condensing furnace exhausts through PVC, usually out a side wall, and needs a combustion-air pipe plus a condensate line running to the floor drain or a small pump. The water heater that shared the chimney may be left with a flue too big for it alone, which calls for a liner or a power-vent water heater. The mechanical permit covers the new venting.
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 inducer motor is the small fan that starts first and pushes exhaust out the vent. Noises and codes of a failing one, repair vs replace, and cost.
Read the guideHow long a furnace lasts in Minnesota: sourced 15–20 year figures, why long winters add wear, signs it's near the end, and how to decide repair or replace.
Read the guideFurnace replacement in Lake Elmo? Call or send a request.