Furnace Replacement in Naperville, IL
Free in-home furnace replacement estimates in Naperville, IL. A new furnace costs $3,000 to $9,500 installed as of October 2026, before Nicor Gas rebates.
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Get a Free New Furnace Estimate in Naperville
Free in-home replacement estimates from a Lennox Premier Dealer.
- Good, Better and Best options with upfront pricing
- Nicor Gas rebates applied where you qualify
- Financing available, including 0% APR on select Lennox systems during Lennox promotions
- Sized with a load calculation, installed and permitted
Repair Instead of Replace?
If your furnace may be worth fixing, our furnace repair team starts with a $75 diagnostic.
- $75 diagnostic ($99 evenings, weekends & holidays)
- 24/7 emergency service, with same-day appointments available
- Trucks stocked with common furnace parts, so most repairs are done in one visit
- Upfront, flat-rate pricing before any work starts
Quick Summary
As of October 2026, a new furnace from Pure Comfort Heating and Cooling costs $3,000 to $9,500 installed in Naperville, IL (60540, 60563, 60564 and 60565), before Nicor Gas rebates of $150 to $225 on qualifying high-efficiency models. Estimates are free and in writing, with Good, Better and Best Lennox options, most installs take one day, and replacing the furnace and AC together costs $8,000 to $19,000. Call (708) 515-4822.
Reviewed by Gene Baldassano, owner and NATE- and EPA 608-certified HVAC technician since 2008 · Updated
Choosing a New Furnace for a Naperville Home
Most Naperville homes went up between 1960 and 2000, so many are large colonials and two-stories with full basements, often with one furnace serving the whole house. When we replace a furnace, we check duct sizing, upstairs returns and whether zoning or a second system makes more sense than a bigger unit. Many 1990s and 2000s homes still have their original builder-grade furnace, and in finished basements we plan the install around ceilings and walls already in place.
Furnace Installation in Naperville: How It Works
It starts with a free visit to your Naperville home. We measure the house and ductwork, check the venting and gas supply and run a load calculation, then give you written Good, Better and Best Lennox options with rebates and financing laid out. On install day, our own crew removes the old furnace, sets the new one, connects venting, gas, condensate and controls, and tests combustion, temperature rise and airflow before we leave. We register the warranty and walk you through the new thermostat settings.
Repair or Replace Your Naperville Furnace?
A gas furnace usually lasts 15 to 20 years in the Chicago area. A quick check is the $5,000 rule: multiply the furnace’s age by the repair price. If the result is over $5,000, replacement usually makes more sense. If your Naperville furnace is younger or the repair is small, a repair may be the better value, and our furnace repair team can diagnose it for $75.
Heating Services in Naperville
Related services for Naperville homeowners.
New Furnace Cost in Naperville
As of October 2026, a new furnace from Pure Comfort costs $3,000 to $9,500 installed in Naperville. House size, whether a second system or zoning is needed, and working around finished basements drive most of the price in Naperville. Replacing the furnace and AC together costs $8,000 to $19,000. Every estimate is free and in writing, with Nicor Gas rebates and financing shown before you decide.
| Item | Typical price | What changes it |
|---|---|---|
| Free in-home estimate | $0 | Load calculation and written Good, Better and Best options |
| New furnace, installed | $3,000 to $9,500 | Efficiency, single-stage versus two-stage or variable-speed, venting and return-air work |
| Furnace and AC together | $8,000 to $19,000 | Matched Lennox system with shared labor |
| Nicor Gas rebate | $150 to $225 | Qualifying 95%+ and 97%+ AFUE furnaces |
| Install time | Usually 1 day | Return-air, venting or zoning work can add a day |
| Permit and inspection | Arranged where required | Who files depends on the City of Naperville |
| Financing | 0% APR on select Lennox systems | During Lennox promotions; longer terms with interest on projects over $2,000 |
Permit needs for a furnace replacement in Naperville depend on the equipment and project scope. Where a permit is required, we confirm the City of Naperville’s current requirements and pull the permit, or help you file it in towns where the homeowner applies, then schedule any required inspection.
Why Naperville Homeowners Choose Pure Comfort
Pure Comfort focuses on clear answers, sound system design and work that holds up after the service truck leaves.
Local and family-owned
Founded in Streamwood in 2008 and still owned and operated by the family who started it.
In-house technicians
Service and installation completed by our own crews, never subcontracted to another company.
Certified and insured
NATE and EPA Section 608 certified, fully licensed and insured for the work we carry out.
Lennox Premier Dealer
Premier Dealer standing, with service and repair covering all major HVAC makes and models.
Not Sure Whether to Repair or Replace?
We will assess the system, explain what we find and help you compare the realistic options for your Naperville home.
Feedback From Homeowners We Serve
Choosing an HVAC company means trusting the people who enter your home and the work they leave behind. Read recent customer feedback about Pure Comfort’s communication, care and workmanship.
What Naperville homeowners say
“I very appreciate the good job and truthful information about my AC unit. Truly grateful”
AC service
“Great group of guys,fast, knowledgeable and fair. Thanks a lot....”
Service visit
“Gene is outstanding! He is always able to figure out whatever problem we are having with our system. He is professional, on time, friendly and trustworthy! He is also very responsive and able to come in a timely fashion. I would highly recommend Gene at Pure Comfort for all your Heating and Air Conditioning needs.”
Repeat customer
When you need HVAC due to an unexpected event you want someone who not only can provide the service you need….
Great service. Very professional. They try all avenues to resolve issues with equipment. Always a pleasure to work….
Had an issue with the thermostat reading erroneously, as soon as I contacted Pure Comfort, they got back….
Our serviceman, Gene, was very responsive, professional and thorough. He explained each aspect of the issue clearly and….
I called them at 7am with no heat, the only available spot they had was in the afternoon, 5 minutes later they called….
Gene was professional, on-time, very friendly and did a thorough job inspecting our A/C unit. He also checked….
Quick and honest service and advice last minute on a Sunday. Clean crew and equipment. Gene was a knowledgeable….
Gene did not give up on the problem. It was a crazy situation but he never gave up found the problem and fixed it. Thank you….
Furnace wasnt working. Called Pure Comfort after hours and they came right out and helped me. The furnace….
Very professional, definitely knowledgeable had the furnace fixed in 10 minutes. I can honestly say I trusted Gene….
Furnace Replacement Near Naperville
Pure Comfort installs new furnaces throughout Naperville (60540, 60563, 60564 and 60565) and the towns around it, including furnace replacement in Wheaton, furnace replacement in Glen Ellyn and furnace replacement in West Chicago. Our shop is in Streamwood, about 40 minutes away, and our own crews handle every install.
Furnace replacement in nearby towns
- LisleFurnace replacement
- WheatonFurnace replacement
- Downers GroveFurnace replacement
- West ChicagoFurnace replacement
- Glen EllynFurnace replacement
Near Naperville but not listed? We serve towns within about 20 miles of Streamwood. See all service areas or call (708) 515-4822.
Naperville Furnace Replacement FAQs
How much does a new furnace cost in Naperville?
As of October 2026, a new furnace from Pure Comfort costs $3,000 to $9,500 installed in Naperville. House size, whether a second system or zoning is needed, and working around finished basements drive most of the price in Naperville. Replacing the furnace and air conditioner together costs $8,000 to $19,000, and Nicor Gas rebates of $150 to $225 apply to qualifying 95% and 97% AFUE furnaces.
How do I get a free furnace estimate or quote in Naperville?
Call (708) 515-4822 or book online. We visit your Naperville home, measure the house and ductwork, run a load calculation and give you written Good, Better and Best options with rebates and financing. The estimate is free, and there is no pressure to decide on the spot.
Do I need a permit to replace a furnace in Naperville?
Permit needs for a furnace replacement in Naperville depend on the equipment and project scope. Where a permit is required, we confirm the City of Naperville’s current requirements and pull the permit, or help you file it in towns where the homeowner applies, then schedule any required inspection.
Should I choose an 80% or a high-efficiency 96% furnace in Naperville?
Most Naperville homes built since the 1970s already vent through PVC or can easily, so a 96% to 97% furnace is the usual choice. In older homes near downtown that vent into a chimney, we price the venting change alongside the furnace.
How long does a furnace replacement take?
Most furnace replacements in Naperville take one day. Jobs that add return air, new venting or zoning can take a second day. If you are without heat, tell us when you call so we can schedule the install as soon as the equipment is available.
Is there a furnace replacement company near me in Naperville?
Yes. Pure Comfort is based in Streamwood, about 40 minutes from Naperville, and installs furnaces across 60540, 60563, 60564 and 60565. We are a Lennox Premier Dealer with NATE-certified technicians, and our own crews do every install.
Is it worth replacing a 20- or 30-year-old furnace?
Usually, yes. Most furnaces last about 15 to 20 years in Chicago-area winters. A 20- to 30-year-old furnace is often far less efficient than a new high-efficiency model, parts get harder to find, and heat exchanger problems become more likely. If yours is safe and the repair is small, fixing it can still make sense. In Naperville, we check the furnace and give you both prices so you can decide.
Schedule a Free Furnace Estimate in Naperville
Get a careful diagnosis, straightforward options and help from a local HVAC company that stands behind its work.
- You get a scheduled window and the technician's name
- We diagnose and price the work before anything starts
- Replacement estimates are free, with no obligation
Call rather than using the form: (708) 515-4822. Forms are checked during business hours, so a phone call gets you a faster answer.