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Old 06-07-2008, 12:55 PM   #1
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More powerful blower for a Tappan?


Last summer I replaced the outside unit for my air conditioner. It blows cold but it takes some time (runs for hours sometimes) for the inside temperature to come down when it's really hot outside. The guy that replaced the outside unit recommended I replace the unit in the basement too but I simply couldn't afford it. He said the blower is barely big enough for the house, which it why it takes so long to cool sometimes. I've taken the blower out and cleaned the blades but it still doesn't move much air. Would it be possible to replace just the blower with one that moves more air? I don't know where to begin looking and it needs to fit in the same hole the old one came out of. Any suggestions? Details below.

It's pretty old...probably original to the house, circa 1979
Tappan furnace/air handler model# SGUF-80-D-36-E7
Blower model# 5KCP39KGD027ES
1/3 HP - 6.9amp - 115 volt - 1075 rpm

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Old 06-07-2008, 01:18 PM   #2
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More powerful blower for a Tappan?


Have you checked to see whether or not your present motor is multi-speed and they are just using low speed? My understanding is heat would be a med-low perhaps depending on whether or not it's a gas furnace and cooling should be a med-high to high speed. Again, this is my understanding of the subject but an hvac expert may ring in with more info.

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Old 06-07-2008, 02:16 PM   #3
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More powerful blower for a Tappan?


Hmmm...Good question. It's a gas furnace but I'm pretty sure it's a single speed fan. It heats very quick in the winter and the unit is in good shape for its age. I've never noticed a difference in the speed of the air or sound of the fan. It seems consistent year 'round.
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Old 06-08-2008, 11:00 AM   #4
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More powerful blower for a Tappan?


When you had the blower out did you crawl in there and look up at your evap coil to make sure it was not dirty and/or clogged up? If it is not clean that would restrict a lot of air.

And I agree, check to see if it is tapped for high speed for cooling.
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Old 06-08-2008, 12:05 PM   #5
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More powerful blower for a Tappan?


Ok thanks a lot. I'll take that fan back out and check the evap coil. I never would have thought of that. I'll also look into the fan speed.
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