Carrier Furnace Secondary Heat Exchanger Problems

One the most common issues found in carrier high efficiency gas furnaces is corrosion or blockage is their secondary heat exchangers in approximately 5 to 10 years after the original installation date or in other words premature secondary heat exchanger failure.

Carrier furnace secondary heat exchanger problems. The carrier high efficiency gas furnace trade in allowance program is designed to offer homeowners an alternative to replacing only the heat exchanger under the terms of their limited lifetime heat exchanger warranty on a first generation carrier condensing furnace if their furnace experiences a heat exchanger failure. This policy only covers the failure and required replacement of a secondary or condensing heat exchanger and the following related parts. The program offers consumers an alternative to replacing a cracked secondary heat exchanger with significant allowances on select carrier model furnaces. This problem happens due to corrosive nature of condensation water produced during combustion of natural gas and improper design in drainage system which keeps the acidic water in secondary heat exchangers exit point as shown in the.

On january 3 2020 i purchased a carrier infinity 58mvc120f10120 which had the secondary heat exchanger plug up with corrosion therefore has caused numerous furnace issues over the past 3 years. The chamber becomes corroded from the inside possibly due to a reaction from acidic condensation on the 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 truth is many homeowners have thought their carrier furnace wasn t working but all they needed to do was to turn on the system or turn up the heat.

Carrier gas furnace troubleshooting step by step 1. Sometimes the thermostat gets turned off or the setting changed by accident.