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.
Read the guide
Furnace Replacement in Northfield, MN
Northfield furnace replacements land at $4,500–$9,500 installed with us: 80% AFUE around $4,500–$6,000, 96–98% around $6,500–$9,500. You get a written flat-rate quote after a Manual J. Northfield's gas comes from Xcel Energy, whose furnace rebate may call for a participating contractor, so confirm that with Xcel before you choose.
Furnace replacement calls in Northfield homes
Replacing a furnace in one of Northfield's Victorian or early-1900s houses starts with the venting. A 96% furnace leaves the tall masonry chimney for PVC through a side wall, and the water heater stays behind in a flue far too large for it, so a liner or a power-vent water heater usually follows. Some owners keep an 80% furnace when a side-wall route would cross a porch or the front of the house, and we price both.
Sizing is the other trap. A foursquare that has had insulation blown into its walls and new windows needs far less furnace than the one installed when it was drafty, and gravity-era ducts can carry plenty of air at low speed. A Manual J settles it. In converted apartment houses each unit usually has its own furnace, and they can be replaced over a few seasons. Inside city limits, the City of Northfield handles the permit on either side of the county line.
Updated September 23, 2026
How much does a new furnace cost in Northfield?
An installed furnace from us runs about $4,500–$9,500 in Northfield: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in Northfield as in every town we serve. See the furnace replacement cost guide.
Are there rebates for a new furnace in Northfield?
Northfield is one of the towns where Xcel Energy supplies both gas and electricity, so Xcel's programs cover the whole system: heating equipment rebates for high-efficiency gas furnaces and boilers, plus cooling, heat pump and mini-split rebates on the electric side. Many Xcel rebates require one of its registered contractors, so ask whether yours does before choosing equipment. CenterPoint's programs don't apply here. Xcel's Saver's Switch and AC Rewards programs are open to its electric customers too. 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 Northfield: questions
Xcel Energy supplies our gas in Northfield. How do its furnace rebates work?
Xcel pays rebates on qualifying high-efficiency gas furnaces through its heating equipment program, and it resets the rules and amounts every year. Some of those rebates list participating contractors, so check the current page and ask Xcel whether your rebate needs one before you choose equipment. We help with the paperwork where the program allows it and give you the model numbers and efficiency data the application asks for.
Can we replace just one furnace in our Northfield apartment house?
Yes. Each furnace in a converted house is its own system, and replacing them one at a time spreads out the cost. The catch is shared venting: if two furnaces use one chimney and one switches to PVC, the remaining furnace and any water heater still need a flue that drafts properly. We check that on every partial replacement and put any liner work in the quote.
More in Northfield
- Furnace repair in Northfield
- AC repair in Northfield
- AC replacement in Northfield
- All HVAC service in Northfield
Furnace replacement near Northfield
- Elko New Market, MN 11 mi
- Farmington, MN 13 mi
- Lakeville, MN 14 mi
- Apple Valley, MN 19 mi
- Rosemount, MN 20 mi
- New Prague, MN 21 mi
Brands we install and service
Guides on furnace replacement
Frozen Condensate Line on a High-Efficiency Furnace
Furnace quit in a cold snap and the drain line froze? How it trips the pressure switch, how to thaw it safely, and fixes that keep it from freezing again.
Read the guideFurnace Limit Switch Tripping? What It Does and What to Check First
Why a furnace high-limit switch keeps tripping, a symptom-to-cause table, the checks to do yourself, the order a technician follows, and what the fix costs.
Read the guideContact Us
Furnace replacement in Northfield? Call or send a request.