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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Imac near an open window (humidity, direct sunlight)


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Roy G Biv

 
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I have a young 27" iMac in Indiana, and my desk is in front of my only unobstructed window, which I like to keep open often during the summer months. The iMac is about a foot away from the window. It gets into the 80's and 90's in June/JulyAugust, and the iMac receives about 3-6 hours of direct sunlight in the morning. Also, it's usually in the low- to mid-80's in my room during the summer. Is that very bad?

Should I be concerned about humidity or direct sunlight?
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chas_m

 
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I'd be more concerned about dust than the heat. That direct sunlight is also probably not good for it (assuming its running at the time), as that would cause the temp to rise beyond the local temperature.

I'm sure some small adjustments in the placement of the desk, along with an air ionizer in the room (NOT close to the Mac!) would solve both problems.
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Sunlight does cause most things to yellow also. The aluminum portions of the case will stand up to it, but you'll find any plastics exposed to direct sunlight changing color over time.

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the8thark

 
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And also direct sunlight for a prolonged time doescause some plastics to so hard and brittle too. So it's best if you can heave the curtains closed for those few hours each day and you should be fine. I do that all year round cause I own the latest model white imac.
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Wouldn't even think about leaving a window open around here in the Summer!
Not with the Texas sun able to boil water and fry eggs.

I suggest you consider buying a window air conditioner for your room and use it during the Summer months. Depending on the size of the room, a small unit should suffice. That will not only reduce the humidity in the surrounding air, it'll also help keep the sun off your Mac when you close the curtains.

Regards.
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Roy G Biv

 
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Thanks for the replies. As for sunlight damaging the iMac's plastic, its back is to the window, so sunlight is pretty much only hitting the metal backing directly. I found this on the official iMac page:

Electrical and operating requirements
Line voltage: 100-240V AC
Frequency: 50Hz to 60Hz, single phase
Maximum continuous power: 241W (21.5-inch models); 365W (27-inch models)
Operating temperature: 50 to 95 F (10 to 35 C)
Storage temperature: -4 to 116 F (-20 to 47 C)
Relative humidity: 5% to 95% noncondensing
Maximum altitude: 10,000 feet
Typical acoustical performance
Sound pressure level (operator position): 18 dBA at idle6

The maximum 95 F degrees operating temperature is somewhat concerning, as that will probably be how hot it gets on the hottest days. What about the relative humidity? I'm guessing 95% is really high, but I don't really know what that number means.

Have many people on this board reported Mac computers failing due to humidity or heat/sun exposure?
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