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Old 07-14-2012, 03:43 PM
 
737 posts, read 1,484,556 times
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I have a few questions:

Is adding radiant barrier really not that worth it?
Can I wrap extra insulation around a duct that is long and warming up before it gets to a room?
Is an attic fan worth it?

Our a/c works well, it's just in the hot afternoons and evenings where the heat up there is messing with the cooling capability....air is warming up in the ducts before it gets to certain rooms not near the thermostat. No other options...it's a new unit, we have a duct blower fan, it's decently balanced.
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Old 07-14-2012, 05:11 PM
 
593 posts, read 1,310,528 times
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Radiant barrier is worth it in terms of cutting down the temperature but may be cost prohibitive if u have a small attic bcuz it would be hard to install.

Really depends on size and age of home. Does it have vaulted ceilings? 8 ft ceilings? Carpet, wood, tile floors? Attached garage? Built on pier n beam or slab? Many issues determine how cool a has can b.

I have found that attic fans can reduce attic temps by as much as 20 degrees. Also they usually have timers that tell them when to turn on/off. Problem is the motors dont last very long in the heat.

If ur home is new then the ducts should b r6 or r8 rated. If older ducts then they could have fallen apart due to uv exposure.

Really, u should have ur ductwork inspected by AC co. They can also recommend companies that do insulation blow in. Just another option.
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