Furnace Replacement Cost in Downers Grove, IL

Downers Grove is part of the Chicago area, so reports from here also power the fuller Chicago page.

3 reports from Downers Grove on file.

Downers Grove reports are counted with the rest of the Chicago area, so the full statistics live on the Chicago page rather than here.

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Reports so far

Prices marked with a source link were documented from a public post; you can open the original and read the quote. The rest were submitted anonymously here.

$3,800Dec 2025reddit Dec 2025 ↗
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“Both quotes seem high. This time last year our furnace died during the Arctic Blast right after Xmas. We went with a full replacement because the furnace was nearly 30 years old.…”
$7,000Dec 2025reddit Dec 2025 ↗
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“Abt quoted me less than three other places. 5000 sq ft home, one furnace in basement and attic. Basement one died just before thanksgiving when it was single digits. They had it…”
$9,000Dec 2025reddit Dec 2025 ↗
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“Oh I definitely will be getting more quotes. I also plan to get a third opinion once my regular HVAC guys finally gets back to me. Kind of annoyed at him right now, but it is the…”

What drives the price of Furnace Replacement

Heating capacity, fuel type, AFUE rating, and blower design decide what a new furnace costs. A single-stage gas furnace is simpler than a two-stage or modulating unit with a variable-speed blower. Converting from electric to gas, changing fuel type, resizing the gas line, or fitting equipment into a crawlspace or attic adds work. The furnace must also match the home's heating load and, when central air shares the cabinet, the existing coil and airflow requirements.

Two quotes often diverge because venting is treated differently. A standard-efficiency gas furnace may use a metal flue, while a condensing furnace needs compatible intake and exhaust piping plus a condensate drain. Chimney liners, return-air modifications, filter cabinets, thermostats, permits, and removal of the old unit may be included in one proposal and omitted from another.