Furnace Replacement in Cary, IL
Free in-home furnace replacement estimates in Cary, 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 Cary
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 Cary, IL (60013), 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 Cary Home
Most Cary homes were built from the 1970s through the 1990s in subdivisions like Hillhurst, Cimarron, Mayfair and Fox Trails, and many are two-stories where one furnace heats both floors. When we replace that furnace, we size it with a load calculation instead of matching the old nameplate, and we look at return air upstairs, since undersized returns are common in late 1980s and 1990s homes. A two-stage or variable-speed furnace evens out temperatures between floors, and if the original air conditioner still runs on R-22, we price a matched furnace and AC together so you can compare.
Furnace Installation in Cary: How It Works
It starts with a free visit to your Cary 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 Cary 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 Cary 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 Cary
Related services for Cary homeowners.
New Furnace Cost in Cary
As of October 2026, a new furnace from Pure Comfort costs $3,000 to $9,500 installed in Cary. One furnace serving two floors, undersized upstairs returns and whether an aging R-22 air conditioner is replaced at the same time drive most of the price in Cary homes. 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 Village of Cary |
| 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 Cary depend on the equipment and project scope. Where a permit is required, we confirm the Village of Cary’s current requirements and pull the permit, or help you file it in towns where the homeowner applies, then schedule any required inspection.
Why Cary 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 Cary 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 Cary homeowners say
“Very honest and fair pricing. I would recommend them to anyone.”
Service visit
“Jose took care of the maintenance of our furnace in a timely and professional manner. Thank you very much.”
Furnace maintenance
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 Cary
Pure Comfort installs new furnaces throughout Cary (60013) and the towns around it, including furnace replacement in Algonquin, furnace replacement in Barrington Hills and furnace replacement in Carpentersville. Our shop is in Streamwood, about 35 minutes away, and our own crews handle every install.
Furnace replacement in nearby towns
- AlgonquinFurnace replacement
- Lake BarringtonFurnace replacement
- Crystal LakeFurnace replacement
- North BarringtonFurnace replacement
- Barrington HillsFurnace replacement
Near Cary but not listed? We serve towns within about 20 miles of Streamwood. See all service areas or call (708) 515-4822.
Cary Furnace Replacement FAQs
How much does a new furnace cost in Cary?
As of October 2026, a new furnace from Pure Comfort costs $3,000 to $9,500 installed in Cary. One furnace serving two floors, undersized upstairs returns and whether an aging R-22 air conditioner is replaced at the same time drive most of the price in Cary homes. 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 Cary?
Call (708) 515-4822 or book online. We visit your Cary 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 Cary?
Permit needs for a furnace replacement in Cary depend on the equipment and project scope. Where a permit is required, we confirm the Village of Cary’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 Cary?
Most Cary homes from the 1980s and 1990s can take a 96% to 97% furnace with PVC venting run out a side wall. Older homes near downtown and the river may still vent into a chimney, so we price the PVC venting change alongside the furnace.
How long does a furnace replacement take?
Most furnace replacements in Cary 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 Cary?
Yes. Pure Comfort is based in Streamwood, about 35 minutes from Cary, and installs furnaces across 60013. 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 Cary, we check the furnace and give you both prices so you can decide.
Schedule a Free Furnace Estimate in Cary
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.