HVAC System Replacement Cost in Dearborn Heights, Michigan
Full HVAC system replacement in Dearborn Heights runs about $14,600 for a typical job. Basic installs start near $8,800. High-efficiency equipment with duct or electrical work can reach $19,300.
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Dearborn Heights Weather and HVAC Load
In a normal year, Dearborn Heights racks up 6,365 heating and 735 cooling degree days (NOAA 1991-2020 normals). Heating is the bigger job here, and furnaces and heat pumps in Dearborn Heights put in far more hours than the air conditioner. On average, Dearborn Heights gets 136 freezing nights and 16 days above 90°F per year. Snowfall averages about 31 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 65,000 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 | 6,365 |
|---|---|
| Cooling degree days / year | 735 |
| Nights at or below 32°F | 136 |
| Days above 90°F | 16 |
| Average low / high | 40°F / 59°F |
Dearborn Heights Housing Stock
Census figures put the median build year in Dearborn Heights at 1958, so a typical house here has about 68 years on it. Houses that old often still have duct runs sized for an old coal or oil furnace and 60- or 100-amp electrical panels. Both can add cost when new equipment goes in. About 16,000 households here own their home, 71.6% of the occupied total. Homes here have a median value of $174,900 and households a median income of $61,035. Those two numbers drive the labor adjustment in our estimate.
Wayne County had 5 hail days and 30 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 1.5 inches across. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost. Wayne County also had 2 tornado days in that period.
When Replacement Makes Sense
- Both units keep needing repairs
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
What Moves the Price
- Permits and electrical work
- Furnace plus AC, or heat pump plus air handler
- Thermostat and zoning upgrades
- Efficiency ratings: SEER2, AFUE and HSPF2
- Duct repair or replacement
- Equipment sized to the house and climate
We raised the national figures about 4% for Dearborn Heights 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
- Duct connections and sealing
- A load calculation and system design
- Startup, testing and warranty registration
- Removing the old equipment
- New, matched heating and cooling equipment
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 Dearborn Heights 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
- Get one quote for a heat pump system and one for a furnace plus AC.
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
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HVAC System Replacement Questions from Dearborn Heights Homeowners
How much is full HVAC system replacement in Dearborn Heights?
Plan on $8,800 to $19,300, with most jobs near $14,600. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Dearborn Heights?
Between late spring and early fall. Dearborn Heights averages 136 freezing nights a year, and heating calls spike from November through February.
How often should an HVAC system be replaced?
Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.
Can I replace only the AC and keep my furnace?
Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.
HVAC System Replacement Near Dearborn Heights
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Dearborn; NOAA Storm Events Database 2020-2025, Wayne County. Prices are our estimates, not contractor quotes. Updated 2026.