A/C performance specification?

etyler88 · 08-08-2006, 12:19 PM

My A/C works fine but the air it blows out is not nearly as cold as the A/C in our 93' Camry. So I am wondering if there is a problem. I assume on the MAX COLD setting there is a specification on what the temperature difference should be between outside air and the A/C output air, I can just use a thermometer at a A/C vent to check. Assuming A/C is set to outside intake. (the A/C is still satisfactory when I operate on recirculate)

Does anybody know if there is a factory spec for the temperature difference?

raslin07 · 08-08-2006, 12:44 PM

<div class='quotetop'>QUOTE(etyler88 @ Aug 8 2006, 09:19 AM) [snapback]299631[/snapback]</div>

Quote:

My A/C works fine but the air it blows out is not nearly as cold as the A/C in our 93' Camry. So I am wondering if there is a problem. I assume on the MAX COLD setting there is a specification on what the temperature difference should be between outside air and the A/C output air, I can just use a thermometer at a A/C vent to check. Assuming A/C is set to outside intake. (the A/C is still satisfactory when I operate on recirculate)

Does anybody know if there is a factory spec for the temperature difference?
[/b]

Back in 93 they used R-12 it was a colder refrigerant most newer cars are not as cold as the old ones they use R-34 but set a thermostat in to the vent and check the tempature it shoud be at least a 25 deg differance to be operating correct

etyler88 · 08-08-2006, 12:52 PM

<div class='quotetop'>QUOTE(raslin07 @ Aug 8 2006, 12:44 PM) [snapback]299650[/snapback]</div>

Quote:

Back in 93 they used R-12 it was a colder refrigerant most newer cars are not as cold as the old ones they use R-34 but set a thermostat in to the vent and check the tempature it shoud be at least a 25 deg differance to be operating correct
[/b]

Mucho Gracias

tumbleweed · 08-08-2006, 03:40 PM

Something else to consider, which you may already know, the Prius uses a variable speed compressor for the A/C. The synchronous A.C. motor runs the compressor only as fast as it needs to to maintain the desired temperature. Of course on MAX COLD it should indeed be maximum cold.

richard schumacher · 08-08-2006, 05:10 PM

Running on recirc gives cleaner air and, when the outside air is hotter than inside, it's more efficient .

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08-08-2006, 12:19 PM	#1
etyler88 etyler88 Join Date: Mar 2005 Location: Dover, DE Posts: 450 My Car: 2005 Prius Model: Package: #3 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 1	My A/C works fine but the air it blows out is not nearly as cold as the A/C in our 93' Camry. So I am wondering if there is a problem. I assume on the MAX COLD setting there is a specification on what the temperature difference should be between outside air and the A/C output air, I can just use a thermometer at a A/C vent to check. Assuming A/C is set to outside intake. (the A/C is still satisfactory when I operate on recirculate) Does anybody know if there is a factory spec for the temperature difference?

08-08-2006, 03:40 PM	#4
tumbleweed Senior Member Join Date: Oct 2005 Location: Eastern Oregon Posts: 1,692 My Car: 2010 Prius Model: V Package: Adv. Technology Thanks: 33 Thanked 104 Times in 84 Posts Friends: 0	Something else to consider, which you may already know, the Prius uses a variable speed compressor for the A/C. The synchronous A.C. motor runs the compressor only as fast as it needs to to maintain the desired temperature. Of course on MAX COLD it should indeed be maximum cold.

08-08-2006, 05:10 PM	#5
richard schumacher Destination: Eschaton Join Date: Mar 2004 Location: United States Posts: 5,510 My Car: 2004 Prius Model: N/A Package: #6 Thanks: 99 Thanked 93 Times in 66 Posts Friends: 0	Running on recirc gives cleaner air and, when the outside air is hotter than inside, it's more efficient .