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Symbolica
8,926 posts
84 months
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StuartGGray said: I cranked up the air con to full but left the windows open, front and rear to empty the car of hot air as I drove along. After a few minutes I shut the back windows but left the fronts open. The air con kicked in after a few minutes, covering me in lovely cold air with the blower at full chat. I left the windows open because it was also nice to have a heat on my arm. Do you run your fridge with the door open to cool down the kitchen as well?
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MarJay
1,716 posts
44 months
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I was always told that with automated climate control, having the windows open has the car trying to cool down the entire world, which can damage the system.
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craigjm
2,230 posts
69 months
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stuartmmcfc said: thanks for the physics lesson  but the point i was making was that Jaguar don't say " turn the air con on full blast and keep the windows closed so it can work at its most efficent' or "open your windows and don't bother with the air con as it'd be a waste of time" but do both even though it's been sugested earlier that open windows and air con don't go together. They don't go together once the AC is working as it should. Opening the window initially assists in getting the AC to its optimum operation faster. If you leave the windows open after a short time its efficiency starts to decline.
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carl_w
4,167 posts
127 months
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MarJay said: I was always told that with automated climate control, having the windows open has the car trying to cool down the entire world, which can damage the system. Damage the ecosystem maybe, but damage the aircon system no chance.
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LMC
918 posts
82 months
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I've done it loads of times, fresh air and arm out, nice cooling breeze on the tootsies. I used to have a motor (can't remember which) that turned all the air con off as soon as you touched the window button, which was very uncool.
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stuartmmcfc
1,100 posts
61 months
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craigjm said: They don't go together once the AC is working as it should. Opening the window initially assists in getting the AC to its optimum operation faster. If you leave the windows open after a short time its efficiency starts to decline. in my initial reply i did say "for the first few minutes", but you're right- the hot air is forced out quicker and then after a short time the efficiency would start to decline.
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busta
4,456 posts
102 months
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I have a friend who switches the air-con off before letting you out of his car. There does seem to be this amusing mis-conception amongst a few people that some of the air-con magic will escape if you have the window open. Slightly OT but on a similar theme, I love driving late at night with the windows wide open and the heater on full chat 
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StuartGGray
Original Poster
6,321 posts
97 months
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Symbolica said: StuartGGray said: I cranked up the air con to full but left the windows open, front and rear to empty the car of hot air as I drove along. After a few minutes I shut the back windows but left the fronts open. The air con kicked in after a few minutes, covering me in lovely cold air with the blower at full chat. I left the windows open because it was also nice to have a heat on my arm. Do you run your fridge with the door open to cool down the kitchen as well? No, because I don't rot like a piece of bacon.
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StuartGGray
Original Poster
6,321 posts
97 months
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Ari said: You can do whatever you like mate, it's your car!  Thanks!
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Raize
1,047 posts
48 months
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Symbolica said: StuartGGray said: I cranked up the air con to full but left the windows open, front and rear to empty the car of hot air as I drove along. After a few minutes I shut the back windows but left the fronts open. The air con kicked in after a few minutes, covering me in lovely cold air with the blower at full chat. I left the windows open because it was also nice to have a heat on my arm. Do you run your fridge with the door open to cool down the kitchen as well? I often open the fridge and stand in front of it if I'm feeling overly warm 
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craigjm
2,230 posts
69 months
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Ventilated seats with decent climate control now that is where its at in hot weather!
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tali1
3,377 posts
70 months
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A/c with open windows is equivalent of buying a brand new -reg car ...and then putting older /personal plate on it.
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StuartGGray
Original Poster
6,321 posts
97 months
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craigjm said: Ventilated seats with decent climate control now that is where its at in hot weather! That does sound good. That's the system that comes with tees for your balls, yes?
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craigjm
2,230 posts
69 months
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StuartGGray said: That does sound good. That's the system that comes with tees for your balls, yes?  once you have had them in a car you wouldn't want seats without although in my current car you can have the heating and cooling on at the same time (no its not a fault it tells you in the manual you can do it) and that is a very odd experience!
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rigga
3,031 posts
70 months
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MarJay said: I was always told that with automated climate control, having the windows open has the car trying to cool down the entire world, which can damage the system. Wont damage it,but will have a hell of a time trying to keep it cool,needs the enclosed space of the car interior with windows ahut to work efficiently.
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StuartGGray
Original Poster
6,321 posts
97 months
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tali1 said: A/c with open windows is equivalent of buying a brand new -reg car ...and then putting older /personal plate on it. This from a guy who thinks he is three dead guys, gulp!
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poing
2,300 posts
69 months
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rigga said: MarJay said: I was always told that with automated climate control, having the windows open has the car trying to cool down the entire world, which can damage the system. Wont damage it,but will have a hell of a time trying to keep it cool,needs the enclosed space of the car interior with windows ahut to work efficiently. I just leave the climate control on automatic at around 20 degrees with not only the windows down but also the roof. Only a couple of times I've turned it off because it's working very hard to cool the entire planet. The rest of the time it hasn't exploded or anything, although to be fair it's rarely over 20 degrees this far north
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Jayfish
2,198 posts
72 months
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8 minutes to get cool? bloody hell is there a small hamster in a wheel running your system to reduce engine strain
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Biker's Nemesis
22,696 posts
77 months
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You'll break the foo foo valve.
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StuartGGray
Original Poster
6,321 posts
97 months
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Jayfish said: 8 minutes to get cool? bloody hell is there a small hamster in a wheel running your system to reduce engine strain The eight minutes is pure heresay. Found it - the 8 mins refers to the Volvo test to see if the air con is working. 8 mins at 1500 revs, air con on, recirc on, blower at 50%, measure the temp in the centre vent. Should be 6-9 degrees C at any ambient temp. I have no idea if this is championship material.
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