Boiler Replacement Cost in Evanston, Illinois
Our 2026 estimate for boiler replacement in Evanston, IL is $7,400 to $16,900. That puts Evanston 35% above the national average, mainly because of higher incomes and home values, which push labor rates up and the bigger heating equipment this climate calls for.
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Evanston Weather and HVAC Load
Evanston logs 6,365 heating degree days and 805 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 Evanston put in far more hours than the air conditioner. Count on roughly 128 nights below 32°F and 17 afternoons past 90°F in a typical year. Snowfall averages about 34 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 | 805 |
| Nights at or below 32°F | 128 |
| Days above 90°F | 17 |
| Average low / high | 40.3°F / 59°F |
Evanston Housing Stock
The median Evanston home dates to 1952, according to the Census ACS. That makes the typical house about 74 years old. Many houses that age were built with hot-water or steam heat, and plenty still run cast-iron boilers and radiators. About 18,000 households here own their home, 55.8% of the occupied total. The median home value is $472,300, and median household income is $95,766. We use both figures to adjust labor and pricing for this page.
Cook County had 27 hail days and 75 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 2.75 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. Cook County also had 8 tornado days in that period.
When Replacement Makes Sense
- Leaks, rust, or pressure that keeps dropping
- The pilot or ignition keeps failing
- Fuel bills keep going up
- The boiler is 20 to 30 years old or more
What Moves the Price
- A combi boiler that also makes your hot water
- A new chimney liner or venting
- Pumps, zone valves and the piping around the boiler
- Condensing or non-condensing boiler
- Fuel type: gas, oil or propane
We raised the national figures about 35% for Evanston 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
- Startup and safety tests
- Flushing and refilling the system
- Venting and fuel hookups
- The new boiler and the piping around it
- Removing the old boiler
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. Expect the contractor to pull a mechanical permit for a replacement job in Evanston. If a bidder suggests skipping it, move on. Also ask for a Illinois license or registration number and proof of insurance. 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
- A combi boiler frees up space and replaces your water heater.
- Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
- Ask your gas or oil company about rebates on condensing boilers.
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Boiler Replacement Questions from Evanston Homeowners
How much is boiler replacement in Evanston?
Plan on $7,400 to $16,900, with most jobs near $12,600. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule boiler replacement in Evanston?
Between late spring and early fall. Evanston averages 128 freezing nights a year, and heating calls spike from November through February.
Can I replace a boiler with a heat pump?
Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.
How long does a boiler last?
A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.
Boiler Replacement Near Evanston
- Skokie $7,000 to $16,000
- Schaumburg $6,900 to $15,700
- Arlington Heights $7,600 to $17,300
- Bloomington $6,000 to $13,700
- Bolingbrook $7,000 to $15,900
- Cicero $5,900 to $13,500
- Decatur $5,200 to $11,800
- Waukegan $6,000 to $13,700
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Chicago Botanic Garden; NOAA Storm Events Database 2020-2025, Cook County. Prices are our estimates, not contractor quotes. Updated 2026.