Home Warranty says A/C blower is fine


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Old 03-16-13, 05:39 AM
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Home Warranty says A/C blower is fine

Good Morning.
I've been reading through the forums, this is a great place.
I haven't been able to find an answer so I thought I would post it here.

I am currently in the process of buying a home in Houston, TX (not brand new). The house is a 2 story with two A/C units. The upstairs unit is cooling and blowing great.
I asked the realtor for the seller to call out their home warranty company to take a look at/fix the downstairs unit's blower. The reason being that when I place my hand to any vent I can barely feel the air blowing out, in some cases almost nothing.
They came out and said that this setup is fine, the unit is cooling and "removing heat" and that is all that matters. The blower doesn't really need to "blow" air out of the vents for it work and that it is properly sized.

It seems to me that if this were the case every new ac unit that I've had installed would perform at this level, or any unit for that matter, but this has never been the case.

Is this guy correct or just giving me the runaround?
Thank you very much for your help.
 
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Old 03-16-13, 05:43 AM
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I should add that they measured the temp drop and it was 19 deg, quite good.
 
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Old 03-16-13, 06:30 AM
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Welcome to our forums!

Your "feelings" about air volume have nothing to do with checking the operation of a ventilation system.
You could use your observation of low air flow as a reason to further examine the system but as the realtor said, it is working and not causing any problems.
It would be your responsibility to look further not the seller's.

This is not to say that there is not a problem but within reason there is a pretty wide range of what you should or should not feel when you put your hand in front of a register.
One method of duct design is to try and size duct work for as low a velocity as possible.
You can size to deliver the required volume but up-size the ducts and registers for a lower velocity because the lower the velocity the more quiet it becomes.

There is a thought that you should barely hear a furnace or air handler running.
 
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Old 03-16-13, 10:08 AM
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Pull the filter and see if it changes the flow of air. Check for more than one location for filters.
 
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Old 03-21-13, 11:20 AM
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After review the A/C technician there wasn't a problem after all. The house was designed with double the vents in most rooms to drop the velocity. Thank you all for your help and input.

Britar
 
 

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