Furnace Replacement Cost in Ann Arbor, Michigan
Expect to pay $4,100 to $10,000 for furnace replacement in Ann Arbor, MI. Most homeowners end up near $7,300, depending on the equipment tier and how much of the old setup can be reused.
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Ann Arbor Weather and HVAC Load
Ann Arbor logs 6,680 heating degree days and 594 cooling degree days in a normal year, based on the closest NOAA weather station. Heating is the bigger job here, and furnaces and heat pumps in Ann Arbor put in far more hours than the air conditioner. Count on roughly 147 nights below 32°F and 14 afternoons past 90°F in a typical year. Snowfall averages about 59 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 70,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 6,680 |
|---|---|
| Cooling degree days / year | 594 |
| Nights at or below 32°F | 147 |
| Days above 90°F | 14 |
| Average low / high | 37.5°F / 58.9°F |
Ann Arbor Housing Stock
The median Ann Arbor home dates to 1971, according to the Census ACS. That makes the typical house about 55 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. About 23,000 households here own their home, 45.6% of the occupied total. The median home value is $435,100, and median household income is $81,089. We use both figures to adjust labor and pricing for this page.
Washtenaw County had 9 hail days and 26 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 2 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage.
When Replacement Makes Sense
- A repair quote runs past a third of the cost of a new unit
- A tech found a cracked heat exchanger, or the CO detector has gone off
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- The furnace is 15 to 20 years old or more
What Moves the Price
- Condition of the existing ductwork and any changes it needs
- Permit and inspection fees, which the local building department sets
- New PVC venting if you move to a condensing model
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- BTU size, which should come from a Manual J load calculation
- Single-stage, two-stage or modulating gas valve
We raised the national figures about 29% for Ann Arbor using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Gas line and vent connections
- Removing and hauling away the old furnace
- The new furnace, filter rack and thermostat wiring
- Combustion and safety tests
- The permit and the manufacturer warranty registration
Michigan Permits, Efficiency Rules and Rebates
Michigan falls in the DOE's North region. New split central air conditioners must meet at least 13.4 SEER2, and heat pumps sold anywhere in the U.S. need 14.3 SEER2 and 7.5 HSPF2. Equipment replacements in Ann Arbor generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Michigan license or registration number and a certificate of insurance with the quote. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Make sure all three quotes are for the same AFUE and staging, or you can't compare them.
- Look up utility rebates on 95%+ AFUE units before you buy.
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
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Furnace Replacement Questions from Ann Arbor Homeowners
How much is furnace replacement in Ann Arbor?
Plan on $4,100 to $10,000, with most jobs near $7,300. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule furnace replacement in Ann Arbor?
Between late spring and early fall. Ann Arbor averages 147 freezing nights a year, and heating calls spike from November through February.
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
Furnace Replacement Near Ann Arbor
- Sterling Heights $3,700 to $9,100
- Lansing $3,200 to $7,700
- Warren $3,300 to $8,100
- Dearborn $3,400 to $8,400
- Grand Rapids $3,500 to $8,600
- Livonia $4,000 to $9,800
- Detroit $3,100 to $7,600
- Troy $4,500 to $10,900
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Ann Arbor; NOAA Storm Events Database 2020-2025, Washtenaw County. Prices are our estimates, not contractor quotes. Updated 2026.