Hi, I have recently moved into a new house, and I am using a "sunroom" as my office. Basically the one wall is just a huge glass sliding door out to the backyard and there is another big window on one of the other walls. There is no heating in this room as of now, and I'm wondering if the temperature at night-time can drop to dangerous levels for my computer? How low does the temperature have to be to cause problems for computers? I don't have a thermometer, but my guess is that its drops down to about 7-12 degrees celcius there at night. I have a 27" iMac in there. Thanks for any help.