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Old 10-13-2008, 11:13 AM   #1
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winterizing a/c


is there anything I need to do to winterize my home a/c, should I cover it?

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Old 10-13-2008, 01:19 PM   #2
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I installed for about 30 years and I bet we only sold 10 covers.The unit is designed to be out doors. but I see no reason not to want to keep ice and snow from getting in it.
I don't cover mine but my next door neighbor does. ........j

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Old 10-13-2008, 01:33 PM   #3
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I installed for about 30 years and I bet we only sold 10 covers.The unit is designed to be out doors. but I see no reason not to want to keep ice and snow from getting in it.
I don't cover mine but my next door neighbor does. ........j
I agree. Waste of time and waste of money. Mine has been out in the weather for 8 years in cold, hot, rain, snow, sleet, freezing rain and high winds.

The only thing to watch out for is excessive growth around the radiator. Can't restrict flow of air to the fins. Some growth is desirable as it helps with cooling by keeping the sun off the fins and precooling the incoming air.
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Old 10-13-2008, 02:37 PM   #4
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winterizing a/c


I have a square 1/2" plywood cover that I put on the unit to keep out the leaves, junk, dirt, etc. The sides are open to provide air circulation. Any rain, melted snow, etc. runs off around it because it overhangs by a couple of inches. They will drain because the unit is rarely level.

In the spring, when I go to clean things out before the AC season, I have very little debris to clean/wash out and no signs of corrosion.

My neighbor does the same thing and his outdoor unit is 28 years old.

Whatever you do, do not limit circulation.

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Old 10-13-2008, 05:11 PM   #5
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any build up of leaves from fall and the winter rains/snow will keep the inside in good shape.cut a sheet of plastic and over hang it 6" around..... tie it down,and your good till spring 09'.without it ...if snow sits on top of a condenser,and the sun hits it the water will work its way into the top bearing of the condenser fan motor,and possibly cause a motor change out at least once in its lifetime.
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Old 10-13-2008, 06:17 PM   #6
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According to another home management website that I review, it is stated to do the following:
Quote:
Your central air conditioner has a heater that vaporizes the refrigerant. If you leave power to the air conditioner on, the heater runs all winter. Not only does that unnecessary effort waste energy and money, it wears out the heater faster.

Some air conditioner compressors have a nearby shutoff switch. If not, you must shut it off at the main electrical panel.
Come spring you should...
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By turning on the power to your central air condition 24 hours before flipping the switch on the thermostat to "Cool" (which activates the compressor), you give the system time to convert the refrigerant from a liquid to a gas. Otherwise, the compressor will try to pump the liquid, which can damage the compressor.
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Old 10-13-2008, 07:46 PM   #7
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According to another home management website that I review, it is stated to do the following:


Come spring you should...

This assumes your ac has a crankcase heater. Majority do not.

Plastic covers can cause condensation which interacts with the paint
and leaves spots.

The latest school of thought is to have little breather holes in ac covers to equalize the temp and eliminate condenstation.
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Old 10-14-2008, 09:11 PM   #8
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thank you for all your replies, 1/2" plywoood sounds good to me.
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Old 10-14-2008, 09:18 PM   #9
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thank you for all your replies, 1/2" plywoood sounds good to me.

That'll work.
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Old 10-15-2008, 01:50 PM   #10
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A couple thick garbage bags and some duct tape should do the trick.
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Old 10-15-2008, 01:51 PM   #11
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If you feel like the need to spend some money on this, this site seems to look good.


Last edited by Termite; 10-15-2008 at 03:32 PM. Reason: Site rules violation. Advertising link removed.
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Old 10-15-2008, 02:15 PM   #12
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A couple thick garbage bags and some duct tape should do the trick.

Nope. That causes condensation and chemical interaction with the plastic and makes stains on the paint.
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Old 10-15-2008, 02:29 PM   #13
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Nope. That causes condensation and chemical interaction with the plastic and makes stains on the paint.
HD/Lowes market covers for round or square air conditioner units that are thin and come with elastic bands. These covers fit loosely on my unit to keep the snow + freezing rain out of the unit. Are you suggesting that these types of covers may cause problems? They fit loosely and do not reach the very bottom of the unit. High winds broke the elastic bands and I needed to use bungee cords last winter.

Last edited by aggreX; 10-15-2008 at 02:34 PM.
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Old 10-15-2008, 04:20 PM   #14
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HD/Lowes market covers for round or square air conditioner units that are thin and come with elastic bands. These covers fit loosely on my unit to keep the snow + freezing rain out of the unit. Are you suggesting that these types of covers may cause problems? They fit loosely and do not reach the very bottom of the unit. High winds broke the elastic bands and I needed to use bungee cords last winter.

I think the loose fit saved your bacon. More air flow to equalize temps.
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Old 10-15-2008, 06:21 PM   #15
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Originally Posted by hvaclover View Post
Plastic covers can cause condensation which interacts with the paint
and leaves spots.The latest school of thought is to have little breather holes in ac covers to equalize the temp and eliminate condenstation.
Thanks for your input! If I continue to use the cover I can make some breather holes on the sides to eliminate potential condensation. My hope is to extend the life of the a/c unit by protecting the unit from snow and freezing rain. I seem to be the only one in the neighborhood that covers the a/c unit.

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