HVAC System Replacement Cost in Peoria, Illinois
Expect to pay $8,400 to $18,200 for full HVAC system replacement in Peoria, IL. Most homeowners end up near $13,800, depending on the equipment tier and how much of the old setup can be reused.
Peoria Weather and HVAC Load
NOAA's 1991-2020 climate normals put Peoria at 5,613 heating degree days and 1,157 cooling degree days per year. Heating is the bigger job here, and furnaces and heat pumps in Peoria put in far more hours than the air conditioner. A normal year brings 118 nights at or below freezing and 23 days over 90°F. Snowfall averages about 26 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 60,000 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 | 5,613 |
|---|---|
| Cooling degree days / year | 1,157 |
| Nights at or below 32°F | 118 |
| Days above 90°F | 23 |
| Average low / high | 43°F / 62.4°F |
Peoria Housing Stock
Half the homes in Peoria were built before 1966 (Census ACS median), so the typical house is about 60 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 28,000 households here own their home, 58.2% of the occupied total. With a median household income of $58,716 and a median home value of $149,500, local labor rates come out below the national middle in our model.
Between 2020 and 2025, NOAA's Storm Events Database logged 20 hail days and 26 days with damaging thunderstorm winds in Peoria County. The largest hail reported was 2.5 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. Peoria County also had 3 tornado days in that period.
When Replacement Makes Sense
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
- An old R-22 AC paired with an aging furnace
What Moves the Price
- Thermostat and zoning upgrades
- Efficiency ratings: SEER2, AFUE and HSPF2
- Permits and electrical work
- Equipment sized to the house and climate
- Duct repair or replacement
- Furnace plus AC, or heat pump plus air handler
For Peoria we kept the national figures close to unchanged, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- New, matched heating and cooling equipment
- Duct connections and sealing
- Removing the old equipment
- A load calculation and system design
- Startup, testing and warranty registration
Illinois Permits, Efficiency Rules and Rebates
Illinois 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 Peoria generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Illinois 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 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.
- Replacing both pieces at once usually costs less than two separate jobs a few years apart.
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HVAC System Replacement Questions from Peoria Homeowners
How much is full HVAC system replacement in Peoria?
Plan on $8,400 to $18,200, with most jobs near $13,800. 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 Peoria?
Between late spring and early fall. Peoria averages 118 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 Peoria
- Springfield $8,600 to $18,600
- Champaign $8,600 to $18,700
- Elgin $10,200 to $22,300
- Waukegan $9,300 to $20,300
- Rockford $8,400 to $18,300
- Cicero $9,200 to $19,900
- Joliet $10,000 to $21,800
- Bloomington $9,300 to $20,200
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Peoria Greater Peoria Airport; NOAA Storm Events Database 2020-2025, Peoria County. Prices are our estimates, not contractor quotes. Updated 2026.