How Long Does a Furnace Replacement Take?
Most furnace replacements take one day; venting, a chimney liner, gas line or duct work can add a second. Ours run $4,500–$9,500 installed. Call 612-429-3465.
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Furnace Replacement in Buffalo, MN
Replacing a Buffalo furnace costs $4,500–$9,500 installed with us, in a written flat-rate quote sized with a Manual J. Older homes near downtown often share a chimney with the water heater, so going to 96–98% means PVC out a side wall and a liner or power-vent water heater.
Furnace replacements in Buffalo homes
Replacing a furnace in Buffalo usually starts with the vent. Older homes near downtown often have the furnace and water heater sharing a chimney, so a 96–98% furnace means PVC out a side wall and a plan for the water heater left behind, either a chimney liner or a power-vent model. In the 1960s–80s split-levels, fit comes first: the utility room was built around a smaller cabinet, and the side-wall vent has to clear windows, the gas meter and the deck.
The 1990s and 2000s houses already have PVC, but the pipe and drain were sized for the old furnace, so we check them against the new one's manual. Every size comes from a Manual J, and a lakeshore house with a wall of glass loads differently than an interior lot. A Buffalo furnace swap normally needs a city mechanical permit, especially when the vent moves off the chimney.
Updated October 27, 2026
What affects the price of a new furnace in Buffalo?
By efficiency: 80% AFUE roughly $4,500–$6,000; 96–98% AFUE roughly $6,500–$9,500. See the furnace replacement cost guide.
Are there rebates for a new furnace in Buffalo?
Gas furnace and boiler rebates come from CenterPoint Energy, which lets you choose your own dealer and wants the application filed in the same calendar year as the install. Ask us which rebates apply when we quote. Rebate programs change every year, so check the utility's current terms before you buy.
Our guides: Xcel and CenterPoint rebates, heat pump rebates.
Furnace replacement in Buffalo: questions
Can the new furnace reuse the PVC venting from our 1990s Buffalo furnace?
Sometimes. Each furnace's installation manual sets the pipe diameter and maximum run for its size, and first-generation 90% furnaces often used pipe or terminations that a new model's manual won't accept, such as an exhaust too close to a window or to the ground. We read the new furnace's venting table against what's in your wall. If the pipe meets it, we keep it. If not, the new pipe is listed in the written quote.
Does Buffalo's city electric utility affect which furnace we should buy?
Indirectly. The furnace burns CenterPoint gas, so its rebate comes from CenterPoint. But a variable-speed blower runs on electricity from Buffalo Municipal Utilities, and if you're weighing a heat pump alongside the furnace, the city utility's own rates and programs decide how that pencils out. We look at both bills before recommending a combination, since the terms differ from Xcel Energy's.
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Brands we install and service
Guides on furnace replacement
Lennox Furnaces Compared: Merit, Elite and Signature
Lennox Merit, Elite and Signature furnaces overlap more than the names suggest. Learn to decode a model number; our 96–98% AFUE installs run $6,500–$9,500.
Read the guide96% vs 98% AFUE Furnace: Worth the Upgrade in Minnesota?
A 98% AFUE furnace saves only about 2% more gas than a 96% model. Our condensing furnaces run $6,500–$9,500 installed. See what the extra buys.
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