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  #31  
Old 07-22-2020, 12:47 AM
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Even at 100f outside you should not need recirculate once the car is cooled off. You filled when hot ambient, need to compensate for that so you are likely a little low yet.
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  #32  
Old 07-22-2020, 02:12 AM
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I almost never turn recirc off (AC or heat). Maybe a handful of times a year. Does lead to some fogging issues from time to time. I just switch it off until it clears... LoL, or roll down a couple windows. Probably dumb but that's what I've always done.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
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2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
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  #33  
Old 07-22-2020, 02:33 AM
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It's not great. Recirc air is unhealthy for a lot of reasons. There is a reason why BMW limits to 3 or 10 minutes when on automatic.
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  #34  
Old 07-22-2020, 10:13 AM
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Yeah, figured. Like being on a flight. But I've always done it and the aircon is cooler in recirc.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #35  
Old 07-22-2020, 03:16 PM
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but unless it's 110 outside ac capable of making cabin 70 with fresh air. Set to auto and dial in 73 and wait until the fan slows down to indicate it's reaches steady State. If you are still warm tap down one degree at a time until you're comfortable.

Caveat the car will blow like a tornado when it's hot so I usually set the temp to 78 initially
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  #36  
Old 07-22-2020, 03:38 PM
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Yep, makes sense Andrew. I leave the aircon temp at 60 at all times. LoL, get annoyed when passenger changes their side. I do the same with heat btw, set to 90 recirc at all times. It's a personal quirk at this point that my wife has made peace with.

The initial tornado you describe turned me off from auto function beginning with my '92 e36.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #37  
Old 07-22-2020, 05:50 PM
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The car cannot ever achieve 60 you are wasting energy and over stressing the hardware. Learn what temp is comfortable. One of my best buds on xo also used to always have the AC set to max until I taught him the lesson below.

Laws of thermodynamics are working against you. What you achieve when you set to max is to remove the maximum heat from the evaporator.

Read this carefully (everybody). Laws of physics dictate the faster the fan the warmer the air.

Each time

Every time.

I prefer not to have warmer loud air so I set to the slowest speed that will get enough BTU out of ME and the best way to achieve that is as described above.

The standard for the HVAC world is to start at 74F (23c) so that's what I recommend. If properly charged X5 will achieve 74 in under ten minutes no matter the temp outside. (set to full auto).

If it's struggling to keep up you can use recirc but better to switch the output to dash to cool your face. Only until no money needed then switch back to full auto.

The caveat of full auto is that the car will sound like it's trying to hover three fans will be so fast when you get into a hot car so I usually will change the set temp to 77-78 until the car coola a bit then bump down to 73 or so.
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  #38  
Old 07-22-2020, 06:19 PM
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I hear you. I almost never have the fan speed set to full for AC, Max fan speed for me is usually just above 50%. But the temp always 60, I don't like seeing any other number. Yeah I'm weird, what can I say? My OCD just has certain triggers. If my passenger rolls their window down, mine has to go down to the same height so it matches. Each and every time. I don't even think about it, just automatic.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #39  
Old 07-22-2020, 07:23 PM
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You'd appreciate that just how some cars have sync with left right temp, there Bentley Continental GT has the same with seat position. When you don't have a passenger the passenger seat copies the driver's

So here's the thing about how you use the AC controls. It doesn't make any sense. Largely becauae the AC can't make 60 cabin unless it happens to be 65 outside. Pick a different number that you can train you brain.

Do you set your house AC to 60?

Find a temp that you are physically and *mentally* compatible with and you'll be much more comfortable. Why waste time and effort to be less comfortable? The car not obit is not ever 60 it's assuredly a temperature the automatic control can keep up with.

Once you find that temp (73 for me), set it and forget it you should not ever have to change it. Use the dash mix vane to fine tune comfort to balance sun hearing etc.

If you need to, literally cover up the number thats no longer 60.
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  #40  
Old 07-22-2020, 08:56 PM
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I set both my BMWs to 70F all year round. What is the proper pressure on the low side? Mine is sitting at 45psi with ambient temps around 95F,
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