11-29-2021, 07:04 PM | #23 | |
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In general NorCal weather is more arid than UK weather. The only time I need AC is when windshield fogs up from the inside on cold days/nights. |
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11-30-2021, 03:30 AM | #24 | |
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Of course a lot will depend on our climate. Mine fits right in the middle of where the full system is a benefit in all seasons. Temperature fluctuations, many days with high humidity. Allows 'set and forget' use, no misting, best cabin atmosphere. Switching 'on and off' in my type of environment, many AC intermittent users suffer with smells due to bacterial build-up. |
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11-30-2021, 10:26 AM | #25 | ||
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11-30-2021, 11:22 AM | #26 | |
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If anything I'm more aware of the alternator load, which can be high. I see many who care less about the alternator load, everything on from a start. But again, where is the issue? A little load on a cold engine is not a thing to be concerned about, can even be a good thing, speeds the warmup phase. |
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11-30-2021, 11:42 AM | #27 | |
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11-30-2021, 04:17 PM | #28 |
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A/C should only be used for company.
FWIW - full auto here year around, I'm always comfortable, clear windshields, no smells, no compressor problems and no fiddling except an occasional temp change here and there
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12-06-2021, 01:58 PM | #30 | |
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Maybe you open your windows often or your car is in a nice dry garage at night, which is why your car never got the moldy smell. Or maybe you just don't notice it because it's your car?
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12-06-2021, 02:46 PM | #31 | |
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12-06-2021, 02:46 PM | #32 | ||
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12-06-2021, 03:30 PM | #33 |
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I'm not sure there's any difference between the car, or the user activating the AC compressor. Leave the button on if you don't want to think about it. Personally I prefer to manually decide when I want to make sure the compressor stays off. Never had any mold or smell issues. Maybe that's something that's a regional/environmental issue?
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12-06-2021, 04:43 PM | #34 |
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I almost never use recirculating air unless I smell something coming in from the outside lol! But even with outside air coming in, I leave the AC on. The humidity from our own expelled air, especially with multiple passengers, isn't expelled with the HVAC sufficiently. Air is being blown in from the outside, but inside air is not being expelled to the exterior.
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12-06-2021, 04:59 PM | #35 | |
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You don't find any reason to keep it running, but I don't see any reason to turn it off. I like the extra preventative measure of keeping moisture out of the car, but thats maybe why I cars always smell new-ish. I also don't like to keep food in the car, and I air it out in the garage if I transport food. I'm just anal like that. More times than not, however, moldy and musky smell is a result in bacteria and mold growing in the car and in the vents caused by turning the AC on and off, even in dry weather through condensation. You always want condensation to form OUTSIDE a closed system, not inside. Remember: When your AC is running, if you don't have the heat on, your ventilation system gets cold. When you turn it off, they newly introduced warmer air comes into contact with the interior wall of the of the vents, which is cold from the system previously running AC. What happens when warm air comes into contact with a cold object? Condensation. Example: The water formed on cold soda cans isn't water from inside the can, it's from the air around it. So you turn your AC off because you think you don't need it, chances are you are going to get condensation in the vents, which increases the chances of mold and mildew etc. So I simply leave it on.
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12-06-2021, 05:02 PM | #36 |
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FYI in most cars, when you are in "auto" mode, even if it's cold outside, no matter how hot you set the temp, the HVAC will continue to use AC unless you manually turn AC off because car manufacturers know that turning off the AC creates condensation in the system.
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12-06-2021, 06:41 PM | #37 | |
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Doesn't that already happen when the you turn off the car and the AC is no longer running? |
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12-06-2021, 08:08 PM | #38 | |
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12-06-2021, 08:27 PM | #39 | ||
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12-06-2021, 10:48 PM | #40 | ||
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12-06-2021, 10:52 PM | #41 |
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I have to say I've never kept the AC on all the time or even heard of this before, nor have I ever had any kind of musty smell in any car I've owned, and I have had cars for extended periods of time.
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12-06-2021, 11:10 PM | #42 | |||
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The idea that you should start the car with the AC off has nothing to do with mold. It's actually also an old idea from when cars didn't have an ECU managed system. The strain on the engine from the AC unit was thought to put too much during a cold start. However, nowadays, the ECU knows what and what not to start when the engine starts.
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12-06-2021, 11:17 PM | #43 |
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It's a preventative measure. It doesn't mean you will always have the problem if you don't do it.
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12-07-2021, 05:00 AM | #44 | |
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