AC switch use in cold weather. -
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post #1 of 3 Old 11-09-2012, 11:24 AM Thread Starter
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2004 TJ Wrangler 
Join Date: Jul 2007
Location: Chicago
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AC switch use in cold weather.

My other half insists on using her A/C during the wintertime with the temperature dial turned all the way into the red. She's got it in her head that it makes the heat work faster.

I keep telling her she's going to break her A/C. My thought is that taking the moisture out of the air with the A/C means it collects in the A/C system where the outside temperature is already freezing cold. The condensation that results causes big problems for the system.

We've gone back and forth about it for two winters now. We need to put it to bed: does it have the effect she thinks it does or is she causing harm to her A/C system?

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jeffreybomb is offline  
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post #2 of 3 Old 11-09-2012, 11:53 AM
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1990 YJ Wrangler 
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Many people think by turning the A/C way down or the heat way up makes it work faster or better. The system will only work as fast as it does and the temp switch has nothing to do with it other than tell it when to turn on and off. It doesnt have extra elements that turn on when you set it higher. As far as hurting the system I dont think it will but I am no expert. The fans will run more because it will take longer to reach the ultra cool or hot temp setting so other than wearing the fan out you should be ok. The system is sealed to no condensation will enter it and if your drain is in good shaper it will be fine.
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post #3 of 3 Old 11-09-2012, 12:08 PM
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2000 TJ Wrangler 
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Originally Posted by jeffreybomb View Post
...does it have the effect she thinks it does ...?

Originally Posted by jeffreybomb View Post
... is she causing harm to her A/C system?
No. The AC cycles on/off when the defroster is run regardless of the temperature setting or the ambient temperature.

Keep in mind that free advice can frequently be worth less than you pay for it.
mdm is offline  

a/c , ac , air conditioning , winter

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