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Furnace Heat Exchanger Repair Lima OH
When your furnace heat exchanger repair Lima OH is on the line, a cracked or plugged exchanger is not something to sit on. We pull the blower, inspect the drum with a camera, run a combustion analyzer, and tell you straight whether it needs repair or furnace heat exchanger replacement Lima. Serving Lima and Allen County homes from 45801 to 45805.
Prepared local crewClear options firstFinal testing and walkthrough
Clear scope before work
Review the approach and price before deciding.
Prepared, clean crews
Equipped vehicles and respectful cleanup.
Local accountability
Neighbors serving neighbors with follow-through.
What is included
What Our Heat Exchanger Service Includes
Every furnace heat exchanger repair Lima OH visit includes a full safety inspection, not just the part swap. We test for carbon monoxide, inspect the drum with a camera, and check the parts that stress the exchanger. Here is what is covered in a standard visit, and what we quote separately if we find it.
Full Heat Exchanger Inspection
We pull the blower, slide an inspection camera into the drum, and check every tube for cracks, soot streaks, and rust scale. This is the core of the visit and takes 20 to 40 minutes depending on access.
Combustion and CO Testing
A combustion analyzer reads CO, oxygen, and stack temperature at the flue, and we check for CO in the supply air and living space. You see the numbers and get a printed record of the readings.
Gasket and Seal Repair
If the drum passes inspection but the gaskets or seals are failing, we replace them and pressure-test the repair. This is the most common affordable furnace heat exchanger repair Lima Ohio outcome we deliver.
Limit Switch and Sensor Check
We test the limit switch, flame sensor, and thermocouple, because a failing limit switch often points to a restricted exchanger. Replacing a bad switch is included in the repair quote when it is part of the heat exchanger issue.
Replacement Drum Sourcing
If the exchanger fails, we source a replacement drum for Carrier, Trane, Lennox, Goodman, Rheem, Bryant, York, or Amana furnaces and quote the full job. Parts are warrantied and registered for you.
Post-Repair Safety Test
After any repair or replacement, we run a full heat cycle and re-test CO at the flue and in the room. We leave the printout with you and walk through what to watch for next heating season.
PLAN
Request a service estimate
Share what is happening and receive a clear next step from the local team.
Service overview
What Furnace Heat Exchanger Repair Lima OH Covers
Furnace heat exchanger repair Lima OH is the work of finding, sealing, or replacing the metal drum inside your furnace that separates flue gases from the air your family breathes. We pull the blower motor, slide an inspection camera down the tubes, and check for cracks, soot streaks, and pressure loss with a combustion analyzer. If the drum is sound but the seal, gaskets, or limit switches are failing, we repair it. If it is cracked through, we walk you through replacement options.
Lima winters run cold and long, and most homes here heat with natural gas furnaces that are 15 to 25 years old. That age is exactly when cracked heat exchangers show up. A furnace blowing cold air, short cycling, or tripping a limit switch is often the first sign. If you search furnace heat exchanger repair in Lima OH near me, we are the local crew that answers, diagnoses, and gives you a straight answer on affordable furnace heat exchanger repair Lima Ohio.
- Carbon Monoxide Testing — Every furnace heat exchanger service Lima OH call starts with a combustion analyzer reading at the supply plenum and a CO check in the living space. If we find elevated CO, we shut the unit down and tag it before we talk about repair. That is the difference between a tune-up and a real safety inspection.
- Same-Day Diagnosis — Most heat exchanger calls get a same-day furnace heat exchanger repair Lima diagnosis. We carry inspection cameras, manifold gauge sets, and clamp meters on the truck, so we can confirm a cracked drum in one visit instead of scheduling a second trip. You get an answer the same day you call.
- Straight Repair-or-Replace Call — We do not sell replacement when a repair will hold. If the crack is small and the drum passes a pressure test, we seal it and document the repair. If the exchanger is cracked across a seam or the furnace is past 20 years, we tell you replacement is the safer money.
- Warrantied Parts and Labor — Heat exchangers we install carry a manufacturer parts warranty plus our own labor warranty. We register the part for you and leave the paperwork on the furnace. If the replacement drum fails inside the warranty window, we come back and make it right at no charge.
- Local, Not a Call Center — We dispatch from Lima, so a furnace heat exchanger repair near me Lima call in Allen County usually gets a technician at your door the same day. No routing through a national queue, no waiting for a callback from three time zones away. You talk to us directly.
- CO Testing on Every Call — Every heat exchanger job includes a combustion analyzer reading at the flue and a CO check in the living space. We do not charge extra for the safety test. If the reading is high, we shut the furnace down and tag it, because a cracked heat exchanger is dangerous in Lima OH and we treat it that way.
- Repair First, Replace Only When Needed — We quote furnace heat exchanger replacement Lima only when the drum fails a pressure test or the crack runs across a seam. A repairable exchanger gets repaired. That approach has kept a lot of 15-year-old furnaces running safely for Lima families who were told elsewhere they needed a whole new system.
- Upfront Pricing Before Work — You get the price before we start. Diagnostic fee, repair cost, and parts are quoted together, so there is no surprise on the invoice. For emergency furnace heat exchanger repair Lima OH calls after hours, the rate is quoted on the phone before we dispatch.
The service timeline
How Our Heat Exchanger Repair Process Works
Phone Triage
You call (419) 287-8289 and describe what the furnace is doing. If you smell gas or your CO alarm is going off, we tell you to shut the gas valve and open windows while we roll. Otherwise we book a same-day or next-morning window and confirm your ZIP, whether that is 45801, 45804, or 45805.
On-Site Inspection
Our technician pulls the blower compartment panel, checks the inducer motor and limit switch, and slides an inspection camera into the heat exchanger tubes. We look for cracks, soot streaks, and rust scale. This step takes 20 to 40 minutes depending on how tight the furnace closet is.
Combustion Analysis
We drill a test port in the flue and run a combustion analyzer to read CO, oxygen, and stack temperature. Readings above 100 ppm CO in the flue, or any CO in the supply air, mean the exchanger is compromised. You see the numbers on the screen with us.
Repair or Replace Decision
If the drum passes, we replace gaskets, clean the burners, and reset the limit switch. If it fails, we quote furnace heat exchanger replacement Lima options on the spot, including Carrier, Trane, Lennox, and Goodman drums we can source locally. You decide, no pressure.
Final Safety Test
After the repair or replacement, we run the furnace through a full heat cycle, re-test CO at the supply and in the room, and check that the flame sensor and thermocouple are reading correctly. We leave the test printout with you and walk through what to watch for next winter.
Tools and methods01 02 03 04 05 06 07 08 09 10 11 12
Tools and Methods We Use on Heat Exchangers
Inspection camera
Slides into the heat exchanger tubes to find cracks, soot streaks, and rust scale that are invisible from the outside. We show you the footage on the screen.
Combustion analyzer
Reads CO, oxygen, and stack temperature at the flue. This is how we confirm a cracked exchanger is leaking combustion gases into the supply air.
Manifold gauge set
Checks gas pressure at the valve so we can confirm the furnace is not over-firing, which overheats the heat exchanger and shortens its life.
Clamp meter and multimeter
Tests the limit switch, flame sensor, and blower motor amp draw. A weak blower motor reduces airflow and stresses the exchanger.
Blower motor puller
Removes the blower assembly so we can access the heat exchanger drum without damaging the housing or the motor mounts.
Fin comb and vacuum pump
Cleans the exchanger fins and evacuates the system when a repair requires opening the refrigerant or condensate side.
Thermocouple and flame sensor testers
Confirms the safety circuit is working correctly after a heat exchanger repair, so the furnace shuts down if the flame goes out.
ACCA combustion testing standards
We follow ACCA standards for combustion analysis and airflow testing. That means we measure, not guess, and we document the readings so you have a record of the furnace condition before and after the repair.
NATE-certified diagnostics
Our technicians hold NATE certification, which covers heat exchanger inspection, combustion analysis, and electrical diagnostics. It is the industry standard for verifying a technician actually knows how to test a furnace safely.
EPA Section 608 handling
When a repair touches the refrigerant or condensate side, we follow EPA Section 608 rules for handling and recovery. It keeps the job legal and keeps refrigerant out of the air.
OSHA safety compliance
Every job follows OSHA safety compliance for gas appliance work, including lockout, CO monitoring, and proper ventilation. We do not cut corners on a furnace that burns gas in your home.
Ohio HVAC license standards
We work under an Ohio HVAC license and pull permits when the job requires it. That protects you if the work is ever inspected and keeps the repair code-correct.
Where this service helps
When Lima Homeowners Call Us
Your CO alarm went off at 2 a.m. and the furnace is still running
We take emergency furnace heat exchanger repair Lima OH calls around the clock. Shut the gas valve, open a window, and call (419) 287-8289. We dispatch a technician, test the exchanger and flue, and shut the unit down safely. You get a same-night answer on whether the exchanger can be repaired or needs replacement, and your family is not sleeping in a house with a leaking furnace.
Your furnace is 18 years old and short cycling every few minutes
We inspect the heat exchanger with a camera, test the limit switch and flame sensor, and run a combustion analysis. If the drum is cracked, we quote replacement; if it is sound, we repair the switch or sensor causing the cycling. You know whether to repair or replace before you spend money, and the furnace runs a full cycle without locking out.
You are buying a Lima home and the inspection flagged the furnace
We do a standalone heat exchanger inspection with camera footage and combustion readings, then give you a written repair-or-replace call you can use in negotiations. You get a documented condition report and a real number for the repair, not a guess from a general inspector.
Your rental property tenant reports no heat in January
We schedule a same-day visit, inspect the exchanger, and give you a written report with photos. If the drum failed, we quote the replacement and handle the part sourcing for you. The tenant gets heat back fast, and you have documentation for your records and your insurance.
Local execution
How Heat Exchanger Repair Runs in Lima
Lima sits in Allen County, where winters drop below freezing for weeks and furnaces run hard from November through March. Most homes here heat with natural gas, and a large share of the housing stock is 40 years old or older, with basement furnaces that have been repaired a dozen times. That combination, cold winters plus aging equipment, is why we see so many cracked heat exchangers. When you book furnace heat exchanger service Lima OH, we inspect the drum, test for CO, and check the limit switch and blower motor, because those parts fail together on older Lima furnaces. If you need affordable furnace heat exchanger repair Lima Ohio, we quote the diagnostic upfront and credit it toward the repair. Our trucks cover 45801, 45804, and 45805 daily, and we can usually get a same-day furnace heat exchanger repair Lima visit scheduled before the afternoon.
Downtown Lima
Older homes with basement furnaces and original ductwork. Heat exchangers here are often 20-plus years old and show rust scale from years of condensation.
West Lima
A mix of post-war houses and rentals. We see a lot of Goodman and Rheem furnaces with cracked drums at the tube sheet.
East Lima
Newer builds with closet furnaces. Access is tighter, so we use the inspection camera and blower puller to reach the exchanger without cutting into the closet.
Allen County outskirts
Rural propane furnaces that burn hotter and dirtier. Heat exchangers here fail faster, and we adjust the gas valve to slow the wear.
Long, cold winters with weeks below freezing
Furnaces run near-continuously from December through February, which overheats aging heat exchangers and accelerates cracking. We schedule more heat exchanger inspections in late fall before the heavy run season starts.
Aging housing stock with original basement furnaces
Older Lima homes often have furnaces past 20 years with original heat exchangers. We inspect these with a camera and test for CO, because a visual check from the outside misses most cracks.
Propane use in rural Allen County
Propane burns hotter than natural gas, which stresses the heat exchanger. We set the manifold pressure with a gauge and inspect the drum more often on propane furnaces.
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Before and after
What a successful service visit changes.
Cracked Drum Replaced in 45801
Before
A homeowner in 45801 called about a CO alarm and a furnace that would not stay lit. The furnace was 19 years old, and a combustion analyzer read 180 ppm CO in the flue. The inspection camera showed a crack running across the heat exchanger seam.
After
We shut the furnace down, sourced a replacement drum, and installed it with new gaskets and a limit switch. Post-repair CO readings dropped to 12 ppm in the flue and 0 ppm in the supply air. The furnace ran a full heat cycle without locking out.
Maintenance: We recommend a combustion test every fall and a new furnace filter every one to three months. Keeping the blower clean reduces the strain on the new exchanger and helps it last its full warranty period.
Gasket Repair Saves a 15-Year-Old Furnace
Before
A Lima homeowner was told by another company that the furnace needed full replacement. The furnace was short cycling and blowing warm air, but the drum passed a pressure test. The real issue was a failed heat exchanger gasket and a dirty flame sensor causing the lockout.
After
We replaced the gasket, cleaned the flame sensor, and reset the limit switch. The repair cost $480 instead of the $3,800 replacement quote. CO readings stayed at 8 ppm in the flue, and the furnace has run two winters since without a lockout.
Maintenance: We clean the flame sensor and test combustion each fall. A $99 tune-up keeps the gasket and sensor in good shape and catches small issues before they trip the limit switch.
Rental Property Heat Restored Same Day
Before
A landlord in 45805 called in January after a tenant reported no heat. The furnace was a 12-year-old Goodman that had been short cycling for weeks. The inspection camera found a hairline crack at the tube sheet, and the flame sensor was coated in soot.
After
We replaced the heat exchanger drum with a warrantied Goodman part, cleaned the burners, and installed a new flame sensor. The tenant had heat back the same day, and we left a written report with photos for the landlord's records.
Maintenance: We set the landlord up on an annual fall inspection for all three rental furnaces. Catching a hairline crack early is what keeps a rental from becoming an emergency call in January.
Problems we solve
Heat Exchanger Problems We Fix in Lima
A cracked or restricted heat exchanger shows up in a handful of ways, and most Lima homeowners notice the symptom before they know the cause. Here are the problems we solve on furnace heat exchanger repair Lima OH calls, and what happens if you let them go.
Furnace blowing cold air after a lockout
A restricted or cracked exchanger trips the limit switch, and the furnace locks out. You get cold air from the vents and a house that will not hold temperature on a Lima January night. We test the limit switch, inspect the drum with a camera, and run a combustion analyzer. If the exchanger is restricted or cracked, we repair or replace it and reset the safety circuit so the furnace runs a full heat cycle again.
Carbon monoxide alarm going off
A cracked heat exchanger can leak CO into the supply air. This is a health emergency, not a comfort issue, and it needs the furnace shut down immediately. We treat CO calls as emergencies, shut the gas valve, and test the exchanger and flue. If the drum failed, we quote furnace heat exchanger replacement Lima options and get the furnace safe before we leave.
Short cycling and strange noises
Banging and popping from the furnace often means the heat exchanger is expanding around a crack. Short cycling overheats the drum and accelerates the damage. We find the cause, whether it is a dirty flame sensor, weak blower motor, or restricted exchanger, and repair it. If the drum is cracked, we document it with camera footage and quote the fix.
Uneven heating between rooms
A restricted heat exchanger or failing blower motor reduces airflow, so some rooms stay cold while others overheat. The furnace works harder and the exchanger wears faster. We test airflow, inspect the drum, and check the blower motor and limit switch. Repairing the exchanger or blower restores even heat and takes the strain off the furnace.
Pricing and expectations
Heat Exchanger Repair Pricing in Lima
$350 - $2,400 depending on repair vs. replacement
Heat exchanger pricing in Lima depends on whether we can repair the drum or have to replace it, and on how hard the furnace is to access. Typical 2026 pricing for furnace heat exchanger repair Lima OH runs $350 to $900 for a repair, and $1,200 to $2,400 for a full replacement with a new drum and labor. We quote the diagnostic upfront and credit it toward the repair if you move forward the same day. You get the full price before we start, not after.
A heat exchanger repair costs a fraction of a new furnace and keeps a safe unit running for years. When replacement is the right call, we quote the full job upfront and register the part warranty for you, so the money you spend is protected.
Repair vs. replacement
A gasket or seal repair is the cheapest outcome, usually $350 to $600. A full drum replacement costs more because the part itself runs $400 to $1,200 depending on the brand, plus three to five hours of labor.
Furnace brand and part availability
Carrier, Trane, and Lennox drums are usually available locally within a day or two. Older or discontinued brands like some York and Amana models can take longer to source, which adds to the timeline but not always the price.
Access and furnace location
A basement furnace with room to work is faster to service than a closet install where we have to pull the blower and work in tight space. Tight access can add an hour or two of labor to the job.
Related parts that failed together
Limit switches, flame sensors, and blower motors often fail alongside a heat exchanger. If we replace them in the same visit, you save the cost of a second diagnostic call and a second trip.
After-hours or emergency timing
Emergency furnace heat exchanger repair Lima OH calls after 6 p.m. or on weekends carry an after-hours rate, quoted on the phone before we dispatch. Same-day weekday calls are billed at the standard rate.
Proof behind the promise
Licensed, Certified, and Reviewed
Technical expertise
Heat Exchanger Expertise You Can Verify
Our technicians hold NATE certification and work under an Ohio HVAC license, with EPA Section 608 handling for refrigerant and OSHA safety compliance on every job. We follow ACCA standards for combustion testing and load checks. That training matters on heat exchangers because a missed crack is a carbon monoxide call waiting to happen. We have inspected thousands of Lima-area furnaces, from basement units in older Allen County homes to closet installs in newer builds, and we know the failure patterns each one shows.
- NATE-certified technicians trained on combustion analysis and heat exchanger inspection
- Ohio HVAC license held by the company, with EPA Section 608 handling on every refrigerant job
- OSHA safety compliance and ACCA standards followed on every furnace heat exchanger service Lima OH visit
- Inspection cameras and combustion analyzers on every truck, not shared between crews
- Experience with Carrier, Trane, Lennox, Goodman, Rheem, Bryant, York, and Amana heat exchanger designs
Customer stories
What Lima Homeowners Say
Dave R.Homeowner, 45801
Our furnace was short cycling all winter and two other companies just cleaned the flame sensor. Lima Furnace Repair Pros pulled the blower and found a crack in the heat exchanger with their camera. They showed me the CO reading on the analyzer, shut the furnace down, and had a replacement drum in two days. Straight talk, no upsell.
Maria S.Homeowner, Allen County
I called about furnace heat exchanger repair near me Lima on a Friday morning and they were here by 2 p.m. The technician tested for carbon monoxide first, then walked me through the repair cost and the replacement option. We repaired the gasket and it has run fine since. Fair price and they cleaned up after themselves.
Tom K.Landlord, 45805
I manage three rental houses in Lima and use these guys for all the furnace work. They inspected the heat exchangers on all three, gave me a written report on each, and replaced one drum that failed the pressure test. The tenants said the techs were polite and explained what they were doing. That is rare.
How much does furnace heat exchanger repair cost in Lima OH?
Most heat exchanger repairs in Lima run $350 to $900 in 2026, depending on whether we are resealing gaskets or replacing the drum. A full furnace heat exchanger replacement Lima job with a new drum and labor typically lands between $1,200 and $2,400. The diagnostic visit is quoted upfront, and we credit it toward the repair if you move forward the same day.
Who repairs furnace heat exchangers in Lima Ohio?
We do. Lima Furnace Repair Pros handles furnace heat exchanger repair Lima Ohio for homes across Allen County, including ZIP codes 45801, 45804, and 45805. Our technicians are NATE-certified and carry inspection cameras and combustion analyzers on every truck. Call (419) 287-8289 and we will schedule a same-day or next-morning visit.
Can a cracked heat exchanger be repaired in Lima?
Sometimes yes, sometimes no. A small crack at a tube end or a failed gasket can be sealed and pressure-tested, and we document the repair. A crack running across a seam or through the drum body cannot be safely repaired, so we recommend replacement. We test with a combustion analyzer and show you the readings before we make the call.
Is a cracked heat exchanger dangerous in Lima OH?
Yes. A cracked heat exchanger can leak carbon monoxide into the supply air your furnace pushes through the house. That is why every furnace heat exchanger repair Lima OH visit includes a CO test at the flue and in the living space. If we read elevated CO, we shut the furnace down and tag it until the repair or replacement is done.
Frequently asked questions
Frequently Asked Questions About Heat Exchanger Repair
Not seeing your question? Our local team can help you understand urgency, scheduling and what to expect.
Ask the local teamRelated services
Related Furnace Services We Handle
Gas Furnace Repair
Most heat exchanger failures we see in Lima are on natural gas furnaces. If your gas furnace is short cycling or blowing cold air, we diagnose the exchanger alongside the burners, gas valve, and igniter in one visit.
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Electric Furnace Repair
Electric furnaces use a different heat exchanger design, but they still crack and soot. We test the element bank, limit switches, and drum on electric units across Lima and Allen County, then quote repair or replacement.
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Propane Furnace Repair
Propane burns hotter and dirtier than natural gas, which shortens heat exchanger life. We adjust the gas valve, clean the burners, and inspect the drum on propane furnaces in rural Allen County and outlying Lima addresses.
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Emergency Furnace Repair
If your CO alarm is going off or you smell gas, that is an emergency. We take emergency furnace heat exchanger repair Lima OH calls 24/7, shut the unit down safely, and get you a same-night answer on repair or replacement.
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Contact the local team
Call Lima Furnace Repair Pros
Reach us any hour at (419) 287-8289. We answer live calls overnight and on weekends, and most repairs in Lima and Allen County get a tech on site the same day. Tell us what your furnace is doing and we will give you a straight answer and an arrival window.