Recently we replaced a seriously failed Carrier furnace. This was one of many Carrier, Bryant and Payne furnaces we have been seeing recently installed prior to 2010 with a problematic secondary heat exchanger. Many of these units have developed serious operational issues or have failed completely. When combined with poor installation workmanship, these issues can result in an unsafe operating condition or a complete shutdown of the furnace, rendering it non-functional.
MODELS AFFECTED
Carrier: 58SX, SXA, SXB, SXC, DX, DXA, DXC, VCA, VUA, MCA, MCB, MXA, MXB, MSA, UVB, MVP, MVB, MVC, MTA, MTB
Bryant: 320A, 321A, 340A, 340M, 345M, 350A, 350M, 351D, 352A, 352M, 355A, 355B, 355C, 355M, 398A, 398B, 399A
Payne: 490A, PG9MAA, PG9MAB
We are finding a large number of failed secondary heat exchangers in these particular models, which relate to a failure of a polypropylene coating. The secondary heat exchanger is designed to extract the maximum remaining heat from the fuel source, resulting in a normal condensation reaction. The chamber becomes corroded from the inside, possibly due to a reaction from acidic condensation on the polypropylene coating. Carrier has not yet explained the cause of the failure; however, the result is a slow blockage of the system, leading to heat retention and further damage of system components. When left untreated, the furnace will no longer operate and in some situations result in melting of exhaust pipes and a serious risk of carbon monoxide leakage.
This is not fear mongering or marketing hype but a serious condition we are seeing regularly. Like many failures, there are several stages and conditions evident. Extreme failures are quite obvious. Early failure needs to be caught early by a trained technician, as letting the condition persist will result in progressive issues. It will only get worse if left alone.
Below are some Pictures of faulty Heat Exchangers we replaced recently:
If your Carrier/Bryant/Payne Furnace is less than 20 years old and has been RED tagged because of Secondary heat exchanger failure, the high level of Carbon monoxide or over heating, you are eligible to get upto $900 Trade-in allowance or FREE secondary heat exchanger assembly by Carrier Corp.
The 2022-23 program end date is April 30, 2023. Below is the list of eligible furnaces for the program.
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Infinity Series 59MN7 – $900
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Infinity Series 59TN6 – $800
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Performance Series 59TP6 – $700
Checkout Trade-in-allowance page for more information
Book your Free Heat Exchanger Inspection today!
