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Furnace Repair in Cary, IL
Most Cary homes were built from the 1970s through the 1990s, and many are two-stories where one furnace heats both floors. Our diagnostic is $75 ($99 evenings, weekends and holidays). Most repairs fall between $100 and $700. Nothing gets done until you approve a flat-rate price.

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Need Furnace Repair in Cary?
From Hillhurst and Cimarron to Mayfair and Fox Trails, our Streamwood shop is about 35 minutes away.
- $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
Time for a New Furnace in Cary?
A Lennox Premier Dealer offers free in-home replacement estimates in Cary, with every furnace sized to the house.
- 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
Quick Summary
Pure Comfort Heating and Cooling repairs furnaces in Cary, IL (60013) from our shop in Streamwood, about 35 minutes away. The diagnostic is $75 ($99 evenings, weekends and holidays), most furnace repairs cost $100 to $700, and you approve a flat-rate price before any work starts. Phones are answered 24/7, same-day service is common, and stocked trucks finish most repairs in one visit. Call (708) 515-4822.
Reviewed by Gene Baldassano, owner and NATE- and EPA 608-certified HVAC technician since 2008 · Updated
Furnace Not Working? Common Furnace Problems in Cary Homes
Most Cary homes went up from the 1970s through the 1990s in subdivisions like Hillhurst, Cimarron, Mayfair and Fox Trails, and many are two-stories with one furnace serving both floors. Furnaces from the 1990s and 2000s are now at the age when inducer motors, pressure switches, igniters and control boards fail. Undersized upstairs returns, common in late 1980s and 1990s homes, make a furnace run hot and trip its limit switch. Frozen condensate lines and side-wall PVC vents blocked by snow are frequent no-heat calls in a cold snap.
How a Cary Furnace Repair Visit Works
In a Cary two-story, we check airflow and return air along with the furnace itself, since undersized upstairs returns are common here. We also look at the PVC vent terminations on the side of the house, because snow and ice can shut a furnace down on its pressure switch. From there, our method holds steady. We follow the heating sequence from the thermostat call through ignition. Then we check the safeties, electrical parts, venting, drainage and airflow. Parts are measured before anything is replaced. You hear the cause and a flat-rate price before work begins. Our trucks carry the common furnace parts, so most furnaces are fixed on the first visit. We repair all major brands, including furnaces from other installers. For most brands we handle the manufacturer parts warranty claim, so you pay labor only.
Repair or Replace Your Cary Furnace?
Many Cary furnaces are originals or first replacements from the 1990s and 2000s, and those are now at the age when major parts fail. A well-maintained gas furnace lasts about 15 to 20 years in the Chicago area. Apply the $5,000 rule: multiply the furnace’s age by the repair price. Under $5,000, repair usually makes sense. Over $5,000, get a replacement price too. A cracked heat exchanger is a safety issue at any age. Replacement estimates are free. Nicor Gas rebates apply to qualifying high-efficiency furnaces, and financing is available, including 0% APR on select Lennox systems during Lennox promotions.
Heating Services in Cary
Related services for Cary homeowners.
Cary Furnace Repair Cost and Timing
In Cary, most furnace repairs cost $100 to $700, with about $300 the average. Igniters, flame sensors and pressure switches sit at the low end. Inducer motors, control boards and blower motors cost more. If an older air conditioner on R-22 is part of the same system, we can price that too so you can plan ahead. You approve a written, flat-rate price before work starts.
| Job | Typical window | What changes the number |
|---|---|---|
| Diagnosis | Same day when a truck is open | Scheduling and after-hours demand |
| Furnace repair | Often same day | Smaller parts versus major safety or heat-exchanger work |
| AC repair | Same day to 48 hours | Electrical work versus sealed-system repair |
| Furnace or AC replacement | 1 to 2 install days after equipment arrives | Return-air work, two-story airflow, condenser placement, and installation access |
| Mini split or tankless | Site-specific | Electrical, gas, venting and installation location |
| Tune-up | 60 to 90 minutes | System age, condition and last service |
Diagnosis
Typical window
Same day when a truck is open
What changes it
Furnace repair
Typical window
Often same day
What changes it
AC repair
Typical window
Same day to 48 hours
What changes it
Furnace or AC replacement
Typical window
1 to 2 install days after equipment arrives
What changes it
Mini split or tankless
Typical window
Site-specific
What changes it
Tune-up
Typical window
60 to 90 minutes
What changes it
Why Cary Homeowners Choose Pure Comfort
Cary two-stories often run one furnace for both floors, so we check airflow upstairs as well as the furnace in the basement.
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.
Our replacement process considers sizing, airflow, ductwork, filtration, venting, electrical requirements and controls. Where a permit is required, we confirm the current Cary requirements and pull the permit, or help you file it in towns where the homeowner applies, then schedule any required inspection.
Not Sure Whether to Repair or Replace?
Furnace shutting down in a cold snap, or one room that never warms up? We will find the cause in your Cary home and explain your options.
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 Repair Near Cary
Pure Comfort repairs furnaces throughout Cary and the towns around it, including furnace repair in Algonquin, furnace repair in Lake Barrington and furnace repair in Crystal Lake. Drive time: our shop in Streamwood is about 35 minutes from Cary in normal traffic. Zip codes: we cover Cary homes in 60013.
Furnace repair in nearby towns
- AlgonquinFurnace repair
- Lake BarringtonFurnace repair
- Crystal LakeFurnace repair
- North BarringtonFurnace repair
- Barrington HillsFurnace repair
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 Repair FAQs
How much does furnace repair cost in Cary?
The diagnostic is $75, or $99 evenings, weekends and holidays. Most furnace repairs cost $100 to $700, and about $300 is typical. You approve a flat-rate price before any work starts.
How fast can you get to Cary?
Our Streamwood shop is about 35 minutes from Cary in normal traffic. We answer 24/7 and offer same-day furnace repair when a truck is open.
Why does my Cary furnace run but the upstairs stays cold?
In many Cary two-stories, one furnace heats both floors through undersized upstairs returns. A dirty filter, a weak blower or poor return air makes the upstairs fall behind. We test airflow and temperature rise, then tell you whether a repair, balancing or a return-air change will help most.
Should I repair a 20-year-old furnace?
Use the $5,000 rule: multiply the furnace’s age by the repair price. Under $5,000, repairing usually makes sense. Over $5,000, it is worth getting a replacement price too. A cracked heat exchanger usually means replacement.
Why does my furnace start, then shut off after a few minutes?
Short cycling is often a dirty flame sensor, a pressure switch fault from a blocked vent or condensate trap, or overheating from poor airflow. We test each one before quoting a repair.
Do you repair furnace brands other than Lennox?
Yes. Pure Comfort is a Lennox Premier Dealer, but we repair all major furnace brands in Cary, including furnaces installed by other companies.
What is the $5,000 rule for furnace repair?
Multiply the age of the furnace by the repair price. If the total is more than $5,000, replacing usually makes more sense than repairing. For example, a $350 repair on a 16-year-old furnace comes to $5,600. It is a rule of thumb, not a hard cutoff, so we give you both options in writing.
Schedule Furnace Repair in Cary
Call any hour or book online for furnace repair anywhere in Cary (60013).
- 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.





