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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Furnace Replacement in Green Isle, MN
Installed furnaces in Green Isle run $4,500–$9,500 with us, from roughly $4,500 for an 80% model to $9,500 for a 96–98% condensing unit. The quote is written, flat-rate and sized by Manual J. In town, Xcel Energy supplies the gas; farms outside town usually need a propane furnace.
Furnace replacement calls in Green Isle homes
Most in-town Green Isle replacements are basement swaps on Xcel Energy gas, and the ductwork is the first question. Ducts that have outlived several furnaces get a static pressure test, because a new variable-speed blower can make up for a lot but not for a crushed return. Moving from an 80% furnace to a 96% model brings PVC venting through the rim joist and a condensate drain, and often a liner for the water heater left in the old chimney. Xcel's heating equipment rebates cover qualifying high-efficiency gas furnaces; ask whether a participating contractor is required.
On farms outside town, the new furnace is usually propane, set up with its LP kit and checked for gas pressure at startup. Because propane usually costs more per unit of heat, a 96% furnace pays back faster there. Permits in small cities are handled differently from place to place, so we confirm the process for your address and pull it.
Updated September 23, 2026
How much does a new furnace cost in Green Isle?
An installed furnace from us runs about $4,500–$9,500 in Green Isle: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in Green Isle as in every town we serve. See the furnace replacement cost guide.
Are there rebates for a new furnace in Green Isle?
Green Isle's natural gas comes from Xcel Energy, so a high-efficiency furnace rebate runs through Xcel's heating equipment rebates; ask whether it needs a participating contractor. Most homes also buy electricity from Xcel, whose heat pump and central air rebates apply on the electric side. Some properties are on Minnesota Valley Electric Cooperative instead, whose rebates cover dual-fuel air-source heat pumps, mini-splits and geothermal, with air-source units tied to a metered off-peak program. A propane furnace generally won't qualify for a gas utility rebate, but a heat pump on either electric provider can. Rebate programs change every year, so check the utility's current terms before you buy.
Our guides: Xcel and CenterPoint rebates, heat pump rebates.
Signs it's time to replace your furnace
- A cracked heat exchanger on a furnace that's out of warranty
- The furnace is 20-plus years old and needs another major repair
- Rooms far from the furnace never warm up on sub-zero nights
- Gas bills climbing while your thermostat settings haven't changed
- Repair calls two or more winters in a row
- A burner roar or blower noise you can hear across the house
- Replacement parts for your model are getting hard to find
More detail on our furnace installation page.
Furnace replacement in Green Isle: questions
We heat our farmhouse near Green Isle with propane. Should the new furnace be paired with a heat pump?
It's worth pricing. A cold-climate heat pump carries the house through fall, spring and milder winter days, cutting propane use, and the new furnace takes over when it gets bitterly cold. The pair shares one set of ducts and one thermostat. Heat pumps run $7,500–$14,500 installed with us. Check with Xcel Energy or Minnesota Valley Electric Cooperative, whichever serves the farm, about current heat pump programs first.
The addition on our Green Isle farmhouse never heats well. Will a new furnace fix it?
Probably not by itself. Additions are usually the last stop on the ductwork, with a long run, a small supply and no return, and some sit over a crawlspace or slab with less insulation. A new furnace with a variable-speed blower helps a little. The real fix is a better duct run and a return, or a ductless head that heats and cools the addition on its own. We check before quoting either.
More in Green Isle
- Furnace repair in Green Isle
- AC repair in Green Isle
- AC replacement in Green Isle
- All HVAC service in Green Isle
Furnace replacement near Green Isle
- Arlington, MN 6 mi
- Norwood Young America, MN 8 mi
- Glencoe, MN 9 mi
- Belle Plaine, MN 12 mi
- Cologne, MN 13 mi
- Lester Prairie, MN 14 mi
Brands we install and service
Guides on furnace replacement
The Quietest Furnaces for Minnesota Homes, and Why the Ducts Matter as Much
The 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 guideFrozen Furnace Vent Pipe? How to Clear It Safely in a Minnesota Winter
Furnace 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.
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Furnace replacement in Green Isle? Call or send a request.