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Repairable heat-exchanger


Bain
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I found this--quite easily for obvious reasons--cracked heat-exchanger in a furnace last week. Today, the HVAC tech called with questions about a second furnace with minor problems and said he was going to replace the "face plate" of the furnace in the photo. I asked him a few questions to make certain we weren't miscommunicating, and (I think--we were, after all, talking via phones) he maintained that what I was looking at was not the actual heat-exchanger but a replaceable plate. I was able to penetrate the crack +/- 1/4" with a screwdriver, so I'm finding it difficult to envision that portion of the furnace as replaceable.

John

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What is the manufacturer and model number of this furnace?

Granted this is a faceplate, however you have streaking upwards above the burners. This is could be an indication that the gas valve is delaying shuting off after the inducer has turned off, a possible restriction in the venting system or there is a crack in the heat exchanger. If this is a clamshell heat exchanger and it is a Goodman , looks like Goodman burners, most likely the crimped rings that secure the two halves of the clam shells together have separated.

One note. If the vestibule panel of a heat exchanger is cracked the local governing authority has final approval whether patch plates from the manufacturers may be used.

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You're right, of course, Gary. But the service-people who come in behind me and others seldom possess your level of expertise. Independent thought is becoming a lost commodity. How many service techs would you expect to ask the same questions you did in your post?

John

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Originally posted by Bain

You're right, of course, Gary. But the service-people who come in behind me and others seldom possess your level of expertise. Independent thought is becoming a lost commodity. How many service techs would you expect to ask the same questions you did in your post?

John

icon_speech_duh.gifNot the plug and go techs.[:-paperba

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