Furnace Replacement in Wilmette, Illinois
Furnace Replacement in Wilmette typically costs $4,500-$9,000 installed in 2026, depending on home size and efficiency tier.
Wilmette splits neatly for furnace work: the older east side near the lake leans on boilers, while the postwar neighborhoods to the west are full of forced-air homes on 1950s and 60s furnaces now running on their second or third unit. If your Wilmette house has ductwork, a right-sized high-efficiency furnace is usually the smartest replacement you can make.
| Smaller homes (under 1,500 sq ft) | $3,800-$7,900 |
| Typical homes (1,500-2,500 sq ft) | $4,500-$9,000 |
| Larger homes (2,500-4,000+ sq ft) | $5,000-$11,900 |
Final pricing depends on system size, efficiency, and home configuration. Every quote is written and itemized after a free in-home estimate, with available utility rebates factored in. See current North Shore rebates or get an instant ballpark estimate.
Furnace Replacement for Wilmette homes
The furnaces we see most in Wilmette are mid-century builder units and their replacements - solid in their day, but 80% AFUE at best and often oversized for a home that has since been insulated, re-windowed, and tightened up. Bigger isn't better with furnaces; an oversized unit short-cycles, wears faster, and heats unevenly. We run a Manual J load calculation on the actual house so the new furnace matches the home's real heat loss instead of repeating a guess made decades ago.
A modern condensing furnace in the 90-98% AFUE range trims gas usage noticeably across a Wilmette winter and pairs cleanly with a matched AC down the line. The changeout is typically a single day: the install crew sets the new unit, runs proper PVC venting and condensate drainage, verifies the ductwork connections, and confirms safe combustion before leaving. Where your home qualifies for Nicor Gas efficiency rebates, we hand off the documentation so the upgrade costs less than the sticker suggests.
When Wilmette homeowners call us for this
- System is 15+ years old or out of warranty
- A repair would cost a large share of a new unit
- Rising energy bills or uneven comfort
- Repeated breakdowns in a single season
- Phased-out refrigerant (older R-22 AC)
- Planning ahead before a full failure
Why Wilmette homes need replacement planning
Wilmette mixes century-old lakefront homes with solid mid-century construction, so replacement projects range from boiler and radiator systems in the older east side to furnace-and-AC changeouts in postwar homes further west. Many homes added central air decades ago and are now on their second or third system.
Talk it through - (847) 752-4418Neighborhoods we cover in Wilmette
Our process
- 1Free in-home estimate
A comfort specialist comes to your Wilmette home, measures the space, checks ductwork and venting, and explains options and honest price ranges in writing - no charge, no pressure.
- 2Right-sized equipment
We size the system with a proper load calculation and choose efficiency levels that qualify for the utility rebates you're eligible for.
- 3Professional installation
Licensed, insured installers remove the old system and install the new one to spec.
- 4Rebates, registration & follow-up
We register the warranty, hand off the utility rebate paperwork, and confirm everything is running right.
Frequently asked - Furnace Replacement in Wilmette
How much does furnace replacement cost in Wilmette?
Furnace Replacement in Wilmette typically runs $4,500-$9,000 installed, depending on system size, efficiency, and how the home is configured. We provide a written, itemized estimate from a free in-home visit for every Wilmette project - and factor in the utility rebates you qualify for.
Do you serve all of Wilmette?
Yes. We cover every neighborhood in Wilmette, including East Wilmette, West Wilmette, Kenilworth Gardens, Indian Hill Estates and surrounding areas.
Are you available 24/7 for emergencies in Wilmette?
Yes. We run a 24/7 line across Wilmette for no-heat and no-cool emergencies and can prioritize dispatch.
What kinds of systems do you commonly replace in Wilmette?
In Wilmette we regularly work with Hot-water boilers, 1950s-60s forced-air furnaces, Retrofit central AC, Steam radiators, Aging split systems. We match the approach to the home's age, ductwork, and venting.
Furnace Replacement guides
Looking for the full picture on Furnace Replacement or everything we do in Wilmette? Explore those pages, or call (847) 752-4418 for a free estimate today.