What are the danger signs of a failing heat exchanger?

A cracked exchanger can leak carbon monoxide into your home. Common signs include a flickering yellow flame, soot buildup, or a chemical smell similar to formaldehyde. If your CO detector goes off, shut the gas off immediately.

Why do heat exchangers crack in the first place?

Exchangers often fail due to restricted airflow from dirty filters or oversized burners. In North Texas, poor duct design often causes overheating that stresses the metal. Over time, the constant expansion and contraction lead to fatigue and cracks.

Is it better to replace the exchanger or the whole furnace?

If your furnace is under 10 years old, the part is likely covered by a manufacturer warranty. For older units, the labor cost often makes a full furnace replacement more practical. We provide an honest assessment of both options on-site.

How long does the replacement process typically take?

Replacing a heat exchanger is one of the more intensive furnace repairs we do. It usually takes between four to eight hours. We have to pull the entire blower assembly and gas manifold to reach the internal components.

What are the danger signs of a failing heat exchanger?

A cracked exchanger can leak carbon monoxide into your home. Common signs include a flickering yellow flame, soot buildup, or a chemical smell similar to formaldehyde. If your CO detector goes off, shut the gas off immediately.

Why do heat exchangers crack in the first place?

Exchangers often fail due to restricted airflow from dirty filters or oversized burners. In North Texas, poor duct design often causes overheating that stresses the metal. Over time, the constant expansion and contraction lead to fatigue and cracks.

Is it better to replace the exchanger or the whole furnace?

If your furnace is under 10 years old, the part is likely covered by a manufacturer warranty. For older units, the labor cost often makes a full furnace replacement more practical. We provide an honest assessment of both options on-site.

How long does the replacement process typically take?

Replacing a heat exchanger is one of the more intensive furnace repairs we do. It usually takes between four to eight hours. We have to pull the entire blower assembly and gas manifold to reach the internal components.

Heat Exchanger Replacement in Arlington & Grand Prairie, TX

What neighbors say

What Our Customers Are Saying

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Identifying Cracked Heat Exchangers and Carbon Monoxide Risks

The heat exchanger is the metal wall between the burning gas and the air you breathe. When this component cracks or rusts through, combustion byproducts like carbon monoxide enter your living space. We don't guess when it comes to your safety. Our NATE-certified techs use localized cameras to find even the smallest hairline fractures in the metal.

Signs of trouble include a fluttering burner flame or soot inside the cabinet. If you see a buildup of white scale around the burners, the metal is likely failing. We see this often in older Lennox or Goodman units that have worked through a decade of North Texas winters. This is a critical safety issue.

Furnace repair and inspection by Boost Air And Plumbing

Precision Replacement for Major Furnace Brands

When a heat exchanger fails, you need a tech who knows the internal layout of your specific model. We handle replacements for major brands like Trane, Carrier, and Rheem. This process requires pulling the furnace apart to reach the internal cells. It is a complex job that demands a licensed professional.

We frequently find that a failed heat exchanger is linked to other issues. A failing furnace blower motor replacement might be needed if poor airflow caused the original part to overheat. Replacing the exchanger without fixing the airflow issue is a waste of money. We look at the whole system to ensure the new part lasts.

Boost Air technician on the job at a customer home

Evaluating Warranty Coverage and Repair Costs

Many heat exchangers carry a 20-year or lifetime limited warranty from the manufacturer. If your furnace is relatively new, we can often source the part through the warranty provider. You would only be responsible for the labor and shipping costs. We help you navigate those warranty claims with the manufacturer to save you money.

For furnaces older than 15 years, the cost of labor often approaches the price of a new unit. We provide a clear, no-nonsense breakdown of the costs. If a furnace repair makes sense, we do it. If the unit is a money pit, we tell you the truth. Our goal is to keep your home safe and warm.

Boost Air And Plumbing service van ready for a same-day call

Preventing Future Heat Exchanger Metal Fatigue

The best way to avoid a heat exchanger replacement is proper maintenance. Short-cycling caused by a faulty furnace ignitor replacement can put unnecessary stress on the metal. When the furnace turns on and off too fast, the metal doesn't expand evenly. This leads to premature cracks in the combustion chamber.

We also check your ductwork for restrictions. In many DFW homes, the return air ducts are too small for the heater. This causes the exchanger to bake at temperatures it wasn't designed for. We ensure your system is tuned to prevent these high-heat scenarios. Proper airflow is the key to longevity.

Boost Air technician performing a furnace repair on a residential unit

What you get

Precision carbon monoxide testing ensures your family stays safe.
Full system inspection to prevent secondary furnace component failures.
Direct replacement using OEM parts from brands like Carrier.
Thorough heat exchanger crack detection with high-resolution cameras.
Clear explanation of warranty coverage for various furnace brands.

How it works

1We perform a visual and camera-assisted inspection to locate structural cracks.
2Our technicians disconnect the gas line, burner assembly, and blower motor.
3The old, damaged exchanger is removed and replaced with a new OEM part.
4We run a combustion analysis to confirm the system operates safely.

Related services

Why call us

• 10+ years in DFW
• TDLR / TSBPE licensed
• Flat-rate, written pricing
• Same-day weekday service
• Financing on qualifying jobs

Call (817) 839-4672

FAQs

Heat Exchanger Replacement in Arlington & Grand Prairie, TX

What Our Customers Are Saying

Identifying Cracked Heat Exchangers and Carbon Monoxide Risks

Precision Replacement for Major Furnace Brands

Evaluating Warranty Coverage and Repair Costs

Preventing Future Heat Exchanger Metal Fatigue

What you get

How it works

Related services

Why call us

Frequently asked questions

Need Heat Exchanger Replacement in Arlington or Grand Prairie Today?

Two DFW locations serving the entire Metroplex

Boost Air And PlumbingArlington, TX

Boost Air And PlumbingGrand Prairie, TX