Furnace & Heating Repair in Mount Prospect, IL
Most Mount Prospect homes date from the 1950s building boom, so many brick ranches and Cape Cods here are on a third furnace. Expect $245 to $770 for most furnace repairs, priced flat before work starts, and no diagnostic charge when you approve the repair.
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Need Furnace Repair in Mount Prospect?
From the older homes near downtown to the ranch neighborhoods and Randhurst-area townhomes, we reach 60056 in about 25 to 30 minutes.
- $75 diagnostic, waived when you approve the repair
- 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 Mount Prospect?
Third furnace in a 1950s ranch or Cape Cod? Request a free in-home estimate 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
Quick Summary
Pure Comfort Heating and Cooling repairs furnaces in Mount Prospect, IL (60056) from our shop in Streamwood, about 25 minutes away. As of November 2026, most furnace and heating repairs cost $245 to $770, flat-rate with parts and labor included: flame sensors $245 to $275, igniters $245 to $305 and pressure switches $250 to $355. The $75 diagnostic is waived when you approve the repair, maintenance plan members save 10 to 15%, phones are answered 24/7 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
Heating Problems We See Most in Mount Prospect Homes
Mount Prospect furnaces are often in basements under 1950s ranches and Cape Cods, venting into a masonry chimney shared with the water heater. The repairs we see most are igniters, flame sensors, pressure switches, inducer motors and control boards. Cold upstairs rooms in Cape Cods are usually a duct and return-air problem rather than a furnace failure, and we check chimney draft on older systems every visit.
How We Fix Furnaces in Mount Prospect
In Mount Prospect, many furnaces still share a chimney with the water heater, so we check draft and venting early on every visit. The visit starts with the thermostat call, and we follow it step by step through ignition. Then we test the safeties, electrical parts, venting, drainage and airflow. A short-cycling furnace often points to undersized ducts or a restricted return, so we measure before blaming a part. Where the furnace and water heater share a chimney, draft gets checked on every visit. Once we know the cause, you get a flat-rate price before work begins. Trucks carry common furnace parts, which means most furnaces are fixed on the first visit. We repair all major brands, even furnaces another company installed. For most brands we handle the manufacturer parts warranty claim, and you pay labor only.
Should You Repair Your Mount Prospect Furnace?
Many Mount Prospect homes built in the 1950s are already on their third furnace. Around Chicago, a well-maintained gas furnace lasts about 15 to 20 years. To decide on a repair, multiply the furnace’s age by the repair price. That is the $5,000 rule. Below $5,000, repair is usually the better call. Above it, get a replacement price too before you decide. Any furnace with a cracked heat exchanger is a safety issue, no matter its age. If you want to compare, the in-home estimate is free. Repair usually wins until a furnace nears the end of its 15 to 20 year life. The $5,000 rule helps: age times repair cost under $5,000 means fix it; over $5,000, look at replacing it too. Any cracked heat exchanger is a safety replacement. If you want to compare, the replacement estimate is free, and Nicor Gas rebates and 0% APR financing on select Lennox systems during promotions can narrow the gap.
Other Services for Mount Prospect Homes
Other heating and cooling work in Mount Prospect.
What Furnace Repair Costs in Mount Prospect
A typical Mount Prospect furnace repair costs $245 to $770. Igniters, flame sensors and pressure switches are the most common fixes and sit at the low end. When a Cape Cod upstairs will not warm up, the answer is often duct or return-air work instead of a new part.
| Repair | Typical price | Common symptom |
|---|---|---|
| Flame sensor | $245 to $275 | Furnace lights, then shuts off after a few seconds |
| Hot surface igniter | $245 to $305 | No glow, no flame, furnace locks out |
| Pressure switch or hose | $250 to $355 | Inducer runs but burners never light |
| High-limit or rollout switch | $325 to $340 | Furnace overheats or shuts down mid-cycle |
| Condensate trap or drain clearing | $290 to $410 | Water around the furnace, pressure switch error codes |
| Control transformer | $325 | No power to the thermostat or controls |
| Minor gas leak repair | $200 to $365 | Gas smell at a fitting or union |
| Gas valve | $505 to $1,120 | Igniter glows but no gas flows |
| Control board | $475 to $1,200 | No response, flashing error codes, dead blower |
| Inducer motor | $400 to $1,095 | Loud humming or grinding before startup |
| Blower motor | $830 to $2,220 | Burners run but no air comes out of the vents |
How our repair pricing works
- Every price is flat-rate, with parts and labor included and no hourly charges. You approve it before work starts.
- The $75 diagnostic ($99 evenings, weekends and holidays) is waived when you approve the repair.
- Maintenance plan members save 10 to 15% on repairs. See our service agreements.
- Most furnace repairs cost $245 to $770. Blower motors, inducer motors and control boards are the bigger jobs.
Permit needs and any extra work are reviewed for the specific project. Windows are typical rather than guaranteed, since scheduling depends on current demand and technician availability.
Why Pure Comfort for Your Mount Prospect Furnace
Mount Prospect homes are mostly brick ranches, Cape Cods and split-levels from the 1950s, and we test the chimney and ducts as carefully as the furnace.
Family-run in Streamwood
Run by the family that founded it in Streamwood in 2008, with the owner still reviewing the work.
Employees, not subs
No subcontractors. The people who diagnose your furnace are the people who fix it.
Licensed and certified
Licensed and insured, with NATE- and EPA 608-certified technicians on every truck.
All brands repaired
We install Lennox as a Premier Dealer and repair every major furnace brand.
For Mount Prospect replacements, we check whether the 1950s ducts can carry a new system and how the venting changes if the furnace leaves the chimney the water heater uses.
Still Not Sure What Is Wrong?
Not sure if your Mount Prospect furnace needs a part or a plan? We will test it, explain what we find and compare realistic repair and replacement options.
Feedback From Homeowners We Serve
What homeowners say after a repair tells you more than any ad. Here is recent feedback from nearby customers.
What homeowners near Mount Prospect say
“I was able to get a same day diagnostic for some back drafting I was having with my water heater. Gene was great. Friendly, honest and thorough as we discussed 3 different options and I was emailed estimates the same day.”
Water heater diagnostic
“Jose took care of the maintenance of our furnace in a timely and professional manner. Thank you very much.”
Furnace maintenance
“Nick and Gene are thoroughly knowledgeable and capable of the job required. They were very respectful and helpful in everything they said and did. Because of the work that they did at my home and their character and customer service make Pure Comfort shine as a company to trust.”
Service visit
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….
Nearby Furnace Repair Areas
Our trucks cover Mount Prospect and its neighbors, with furnace repair in Arlington Heights, furnace repair in Des Plaines and furnace repair in Elk Grove Village.
Drive time: our shop in Streamwood is about 16 miles from Mount Prospect, roughly 25 to 30 minutes away in normal traffic.
Zip codes: we cover Mount Prospect homes in 60056.
Furnace repair in nearby towns
- Arlington HeightsFurnace repair
- Des PlainesFurnace repair
- Rolling MeadowsFurnace repair
- Elk Grove VillageFurnace repair
- PalatineFurnace repair
Near Mount Prospect but not listed? We serve towns within about 20 miles of Streamwood. See all service areas or call (708) 515-4822.
Common Mount Prospect Heating Repair Questions
What does a typical furnace repair cost in Mount Prospect?
Typical repairs run $245 to $770 with parts and labor in one flat price. The common small fixes are a flame sensor ($245 to $275), an igniter ($245 to $305) or a pressure switch ($250 to $355). Larger parts cost more: control boards run $475 to $1,200 and inducer motors $400 to $1,095. The $75 diagnostic is waived with the repair.
What if my furnace stops at night in Mount Prospect?
Call us. Phones are answered 24/7, and evening appointments run until 8 pm. After that, we book you for the first open slot the next day and call sooner if one opens. Mount Prospect is about 25 minutes from our shop.
What causes a furnace to short cycle?
A dirty flame sensor, a blocked vent or condensate trap tripping the pressure switch, or overheating from restricted airflow. On high-efficiency furnaces, snow over the exterior vent can do it too. We test before replacing anything.
What happens to my chimney when I get a high-efficiency furnace?
The furnace vents out the side through plastic pipe, so the water heater may be left alone in the chimney. If the chimney is too large for it, the water heater can draft poorly, so we check it.
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.
Can you repair my Carrier or Trane furnace in Mount Prospect?
Yes. Our technicians repair all major furnace brands, not just the Lennox systems we install, and our trucks carry universal parts.
Get Your Mount Prospect Furnace Fixed
Book online or call, and a technician will be in Mount Prospect as soon as a truck is open.
- 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.