Question about Goodman GMS90703BXA Heater

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Goodman furnace may be producing to much water

I have a goodman upflow natural gas furnace( gmh951155dxaa ) which produces appr a bucket full of water over night. I assume this is condensation. 115,000 btu. there are 2 drain hoses that come out side, one connected to the exaust--plastic vent pipe. the other hose connected to possibly a drain pan under heat exchanger area,in area of small fan that i think that clears exaust. I know i should tie drains to a drain but do i have a problem i need to correct first or is this the way my furnace should work. thanks ed

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Your furnace is more than 90% efficient and extracting so much heat from the gas that it condenses instead of blowing out steam. This is good! Figure that for every dollar you spend on fuel, you are getting back 90+ cents back in heat. Compare that to the typical units that only get 70 - 80 cents back in heat.

Yes you should drain your condensate to a proper drain via gravity or a condensation pump. I would recommend you treat the condensate first with a acid neutralizer prior to draining in municipal drains due to it's high content of sulfuric acid. You can purchase these filter type neutralizers on the net or at a good heating wholesaler.

Posted on Feb 12, 2008

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