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Old 06-10-2009, 07:22 AM   #1
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Blowing cold air but not enough

We had the blower motor replaced 2 nights ago. During the day, inside temp has not gotten under 81 deg. We are in Gulf Coast Texas so it is hot outside (about 90 deg). The furnace is in the attic. Cool air is coming through the vents but not hard enough to cool the house enough.

History note: We have been remodeling the entire house (sheetrock to 4' entire house, etc) after getting flooded by Hurricane Ike. A contractor blew insulation in the attic last week. The next day was rainy and semi-cool so we did not notice the A/C was not working, if it was not on that day. We have excellent ceiling fans. The following a.m., we noticed the a.c. was no longer working. The next day, an a/c man came by and re-attached a wire to the furnace that was unattached. After re-attachment, there was cool air (about 71 deg) coming though the vents. Next day, the motor was not blowing. He replaced the motor and it began blowing 63 deg air. The next a.m., temp was only 79 deg inside (higher than outside).

Any ideas would be welcome. The furnace (can't find brand name on label) is about 30 years old. The compressor is a 97 Goodman and appears to be working fine. What are possible causes of not getting enough volume of air? I am an a/c idiot, fwiw. Thanks.


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Old 06-10-2009, 09:23 AM   #2
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If he replaced the motor without putting in a new run capacitor it may need a new capacitor. I would call him back in case the motor is defective and under warranty. You also need to have the ducts examined in case one of them is leaking or collapsed from the insulation job.


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Old 06-10-2009, 08:33 PM   #3
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Would also recommend checking the filter and evaporator. Some of that insulation may have gotten past the filter and plugged the evaporator.
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Old 06-11-2009, 05:04 AM   #4
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Not an AC tech, Yuri is, but I too would be wondering if the insulation guy caused some damage while he was up there, how else would you have a wire knocked off?
...and one day, a loose wire on the furnace , next day a new motor? Something amiss with the service call I think as well. I hope he won't charge for the 3rd call except for time on site
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Old 06-11-2009, 05:29 AM   #5
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Motor could spinning in wrong direction.

Weak cap as mentioned earlier.
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Old 06-11-2009, 04:42 PM   #6
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Originally Posted by beenthere View Post
Motor could spinning in wrong direction.

Weak cap as mentioned earlier.

Thats what I was thinking also, he probaly got a reversible motor and didnt check the rotation on it before he left.


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