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View Poll Results: Do you leave your ceiling fans on?
Yes, always 24/7 in all/most of my rooms 11 16.67%
Yes, but only if I am at home & I turn them all/most on 5 7.58%
Yes, but only if I'm home and only in a specific room I'm using 42 63.64%
No, never 8 12.12%
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Old 10-12-2010, 07:37 PM   #41
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We keep ours running 24/7 except when a family member shuts them off (and gets yelled at). We have high ceilings which comes into play in the winter due to heat layers as mentioned. The heat transfer analysis provided only considered conduction (heat trasferred by contact of two surfaces) and not convection (heat transfer by actually moving the air).

When the blades rotate clockwise, air is being pulled down from the ceiling and concentrated into the center of the room. Concentration of the air increases velocity and provides more cooling effect. We usually run our fans on medium to high in the summer.

When the blades rotate counter-clockwise, air is being drawn up from the floor in the center of the room and dispersed across the ceiling and down the walls. Dispersal of the air decreases velocity so the cooling effect of air movement is less noticeable in the winter season. Dispersal of the air is due to distance from fan to ceiling (vs distance to floor). We run our fans on low in the winter.....extra low would be better if there was such a setting.

...with no reasonable expectation for ER, I'm just here auditing the AP class.Retired 8/1/15.
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Old 10-14-2010, 12:00 PM   #42
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Location: Northern Virginia
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Originally Posted by REWahoo View Post
Be aware that leaving the AC fan on full time will increase the humidity level inside your house. Once the compressor cuts off, air blowing across the coils will transfer the moisture condensed on those coils (think of the moisture condensed on a glass of ice water) into your house. If you live in Arizona this might not be a problem, but it might be uncomfortable in the deep south.

Also, if your A/C unit and ducting are located inside a very hot attic area (like mine), leaving the fan running soon begins to blow not on moist air but moist and warm air into the house.

I say leave it off.
Dear reWAHOO, Now I am worried. This may seem too ignorant but how do I find out if my A/C unit and ducting are in the attic? The compressor is outside near my deck, the thermostat is on the first floor (ground level), but I don't know where the "ducting" is? How/where should I look? Please help.

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Old 10-14-2010, 02:32 PM   #43
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Where are your vents located? The ducting will be in the space above them if they are in the ceiling or below them if they are in the floor.

Numbers is hard.

Retired in 2005 at age 58, no pension

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