96% vs 98% AFUE Furnace: Is the Upgrade Worth It in Minnesota?
What AFUE measures, the gas math from 80% to 96% to 98% using your own bill, and what a 98% furnace really buys you in a cold Minnesota house.
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Furnace Replacement in Bayport, MN
Bayport furnace replacements fall between $4,500 and $9,500 installed by us, with 80% AFUE models near $4,500–$6,000 and condensing 96–98% furnaces near $6,500–$9,500. Older houses near the lake often need chimney or venting work, and that goes into the written, flat-rate quote along with Manual J sizing.
Furnace replacement calls in Bayport homes
In Bayport's older houses, a furnace replacement is shaped by the chimney and the basement. An old masonry chimney may need a properly sized liner before another 80% furnace can use it. A 96–98% furnace skips the chimney and vents through PVC, but the pipes still need a clear path to an outside wall, and the water heater left behind still needs a safe way out. Load calculations on these houses tend to come in below the old nameplates, especially after window and insulation upgrades.
In Inspiration, the job is closer to a swap: the PVC venting and condensate drain are already in place, and the work centers on sizing and matching the AC coil. Bayport's gas comes from Xcel Energy, whose high-efficiency furnace rebates may call for a participating contractor, so check first. We pull the permit.
Updated September 26, 2026
How much does a new furnace cost in Bayport?
An installed furnace from us runs about $4,500–$9,500 in Bayport: 80% AFUE roughly $4,500–$6,000, 96–98% AFUE roughly $6,500–$9,500. Same prices in Bayport as in every town we serve. See the furnace replacement cost guide.
Are there rebates for a new furnace in Bayport?
Xcel Energy serves Bayport for both gas and electric. Older houses that heat with a boiler and have no ducts should look at Xcel's mini-split and cold-climate mini-split rebates, since a ductless system cools those rooms and shares the heating. In Inspiration, a failed AC is a chance to price a heat pump; Xcel pays those heat pump rebates only through Trade Partner Network contractors, and a rebate can't exceed what the installation cost. A house that heats mostly with the heat pump may also qualify for Xcel's lower space-heating rate. 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 Bayport: questions
The furnace in our Inspiration home sits in a finished lower level. Will a new one fit the same space?
Usually. Most replacement furnaces fit the same footprint, and the PVC vents and condensate drain are already routed. What we check is height, since a new cabinet plus a matched coil can stand taller than the old stack, and the service clearance in front, which a finished closet sometimes squeezes. If the door or framing is tight, we tell you during the quote, and anything that has to change is spelled out in the written price.
Our older Bayport furnace needs replacing, but the AC is only a few years old. Can the new furnace use the existing coil?
Often, yes. Because the evaporator coil rests on the furnace's supply opening, the new cabinet has to match its width, or we add a transition, and the new blower has to deliver the airflow that coil and condenser were rated for. We check the coil's model and refrigerant against the new furnace. If it fits, the AC stays untouched; if not, you get the options in writing, including a coil that matches both.
More in Bayport
Furnace replacement near Bayport
- Oak Park Heights, MN 2 mi
- Hudson, WI 3 mi
- Stillwater, MN 3 mi
- Lake Elmo, MN 6 mi
- Grant, MN 8 mi
- Mahtomedi, MN 9 mi
Brands we install and service
Guides on furnace replacement
What Does the Blinking Light on My Furnace Mean?
The blinking light on a furnace is a fault code from the control board. How to read it safely, what common codes mean, and when a reset is fine or not.
Read the guideWhy Is My Furnace Leaking Water? Find the Source, Then Fix It
Water around your furnace? Find the source by where and when it drips: condensate trap, pump, frozen line, humidifier or AC coil, and what can't wait.
Read the guideContact Us
Furnace replacement in Bayport? Call or send a request.