I discovered that the number 1 reason why this happens is because (hard to believe that almost everyone underlooks) the furnace is sloping the wrong direction. In other words its draining the wrong direction causing condensate to accumulate and overwhelms the gasket. Its much easier for a installation tech to level it and let it burn or leak and burn the inlet motor. But check the direction of flow of drain. It should be going away from not into furnace Furnace owners check level of furnace check what direction slope!
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I discovered that the number 1 reason why this happens is because (hard to believe that almost everyone underlooks) the furnace is sloping the wrong direction. In other words its draining the wrong direction causing condensate to accumulate and overwhelms the gasket.
Its much easier for a installation tech to level it and let it burn or leak and burn the inlet motor. But check the direction of flow of drain. It should be going away from not into furnace
Furnace owners check level of furnace check what direction slope!
Great information thank you
👍👍👍
Don’t install a 90% furnace in an unconditioned space