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Posted by udarrell on July 13, 2007, 11:52 am
jthread wrote:
>
>
>>
>>
>>>>>Sadly, they do. Try them in alt.home.repair.
>>>>>
>>>>>
>>>>I think I'll take my chances here for awhile. I looked at some of your
>>>>other
>>>>posts and they don't seem too helpful either. :)
>>>>
>>>>
>>>Life's a bitch.
>>>
>>>Now - fucking go away, and don't get fucking pissy about it.
>>>This is not a forum for clueless home-moaners.
>>>
>>>
>>Shit. The guy isn't asking for free do-it-yourself advice. He's asking
>>your opinion as a supposed professional. "Is this normal? Do fans help?
>>Do I need a _professional_ to repair this?"
>>
>>Jim, I'm not (yet) a "professional", just a student/helper/gofer in the
>>trade. But I've observed a few simple things: Larger units are _usually_
>>noisier than smaller units. Different brands make more racket for the
>>same cooling power than other brands.
>>
>>And... attic fans do help if they don't "tunnel". Sometimes fans just
>>suck a tight stream of air from an inlet point - like a soffit vent -
>>right out the fan. In that case they do little to help. You can tell if
>>your fan is tunnelling or working correctly by doing some spot temperature
>>measurements in the attic (near the ceiling) both with the fan off for a
>>few hours, and with it on.
>>
>>If, with it on, you don't have a substantial reduction in temperature over
>>most of the attic space - say, around 50F on a hot day, the fan's not
>>helping your power bill. If pretty much of the whole area gets cooled
>>uniformly, it will help. Usually, one fan isn't adequate to do it -- air
>>is difficult to move smoothly across truss members, so it tends mostly to
>>move up from the soffits to the peak, then pool there. You're more
>>pulling out that "pool" of hot air than anything else.
>>
>>Radiant-barrier film between the roof and the attic space will help a LOT,
>>and it's fairly inexpensive to have installed professionally. Some
>>outfits in our area do it for roughly 30 cents per square foot, delivered
>>and installed.
>>
>>DO use a pro for your A/C problems. Don't use Paul. He hates you.
>>
>>Most pros would say, "We'll come out and take a look, but there will be a
>>charge for a service call." Paul says, "Fuck off, potential customer."
>>
>>LLoyd
>>
>>
>
>Thanks, I've posted in several ng and never had a problem getting help from
>professionals. Fortunatly, there are nice people just about everywhere you
>look. I'm not an angel either but that guy has some anger issues he needs to
>work out. My first thought was. If he's such a expert in the field, why is
>he wasting his time cussing out nubees in a ng? Uh... did he not see the
>"stupid nubee question" in the header? Really, I was hoping he'd keep after
>it. I kind of get a kick out of seeing just how far they will go. He sounds
>like he is headed for a coronary or stroke.
>
>I suspect you're right on with my attic fan because even when it's running
>it's unbelievably hot in there. I'll look into the film barrier. A lot of
>people here (central TX) have ridge vents installed. That's not cheap either
>from what I understand.
>
>If the a/c breaks down it's covered under my home owners warranty. If I call
>a guy out here to look at it and there isn't anything wrong with it it's my
>expense. I thought maybe there was something I could check. As long as it's
>working, as well as it is now, I'll try to ignore the noise. I hoping it's
>not bothering my neighbors. Thanks again, Jim
>
>
With a minimum of test instruments you can probably determine whether
the airconditioner is working properly.
You will have to read & study how to do take & document the test data.
http://www.udarrell.com/proper_cfm_btuh_duct_sizing_air_conditioning_systems.html
Follow the other AC links, however, always use a tech pro to do the rest
of the testing & the necessary repairs including duct retro if needed!
- udarrell
--
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