Is it dangerous to leave car air conditioning on while car is off?

Elijah · 08-06-2009, 11:16 AM

My mom says if you leave your cars air conditioning on when you turn the car off, so it automatically is on when you turn your car on, that it hurts the engine. Is that true or is she full of BS? It sounds like complete BS to me.

Ashley · 08-06-2009, 02:54 PM

no its not true

indyanajoana · 08-07-2009, 02:11 AM

I am not sure about the engine, but you can run your battery down.

ACE · 08-07-2009, 05:07 AM

Absolutely untrue.

Ashton-S · 09-23-2009, 10:42 AM

it would probably kill your battery and it might damage your car if you left it on for a while

ufos420 · 09-26-2009, 05:50 AM

I could say that I doubt it, but I don't know much about cars. Don't think they'd sell stuff that would kill on normal usage.

ziko · 09-26-2009, 04:07 PM

Well it mainly depends on car. But in most cases it really damages car but not engine. It damages accumulator. So listen your mom.

tilliam75 · 09-28-2009, 06:59 PM

not really but i wouldn't do it because it can cause energy loss in your car

Dan-H · 10-01-2009, 10:28 AM

She's full of it. It makes no difference whether the air conditioner is on or off when you start your car.

dlsjbk2125 · 10-01-2009, 08:12 PM

My dad tells me the same thing. I think it is true because when I forget to turn it off my car doesn't start as well. It is always best to turn it off.

08-06-2009, 11:16 AM	#1
Elijah Junior Member Join Date: Aug 2009 Posts: 1	Is it dangerous to leave car air conditioning on while car is off? My mom says if you leave your cars air conditioning on when you turn the car off, so it automatically is on when you turn your car on, that it hurts the engine. Is that true or is she full of BS? It sounds like complete BS to me.

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08-06-2009, 02:54 PM	#2
Ashley Junior Member Join Date: Aug 2009 Posts: 1	no its not true

08-07-2009, 02:11 AM	#3
indyanajoana Junior Member Join Date: Aug 2009 Posts: 1	I am not sure about the engine, but you can run your battery down.

08-07-2009, 05:07 AM	#4
ACE Junior Member Join Date: Aug 2009 Posts: 1	Absolutely untrue.

09-23-2009, 10:42 AM	#5
Ashton-S Junior Member Join Date: Sep 2009 Posts: 1	it would probably kill your battery and it might damage your car if you left it on for a while

09-26-2009, 05:50 AM	#6
ufos420 Junior Member Join Date: Sep 2009 Posts: 1	I could say that I doubt it, but I don't know much about cars. Don't think they'd sell stuff that would kill on normal usage.

09-26-2009, 04:07 PM	#7
ziko Junior Member Join Date: Sep 2009 Posts: 1	Well it mainly depends on car. But in most cases it really damages car but not engine. It damages accumulator. So listen your mom.

09-28-2009, 06:59 PM	#8
tilliam75 Junior Member Join Date: Sep 2009 Posts: 1	not really but i wouldn't do it because it can cause energy loss in your car

10-01-2009, 10:28 AM	#9
Dan-H Junior Member Join Date: Oct 2009 Posts: 1	She's full of it. It makes no difference whether the air conditioner is on or off when you start your car.

10-01-2009, 08:12 PM	#10
dlsjbk2125 Junior Member Join Date: Oct 2009 Posts: 1	My dad tells me the same thing. I think it is true because when I forget to turn it off my car doesn't start as well. It is always best to turn it off.