I also have no idea of the temperature of your courts in relation to foreclosure sales.

You need the material on hand (or know they can be gotten quickly) because Upper Midwest winter weather can have short stretches of moderate temperature (yes even 70 degrees in January) where exterior work can easily can be done.You may want to review http://www.biggerpockets.com/forums/67/topics/105123-to-my-rehabbers-with-cold-winter-climateswhich covers this topic.

HelloAnyone keep their vacant rental properties air conditioned at a decent temperature for showings?

That 'light switch' looks like a safety on/off switch, not necessarily intended to control temperature.

Single pane windows are more prone to moisture build up; the differing temperatures of outside air and inside air is a factor.

If these spaces are above a wood or metal framed floor level then the temperature difference will not be noticeable.Personally, I really prefer stained, sealed concrete floors as they provide a rich texture to the existing concrete that you really have a hard time achieving with flooring and it wears better than any other material.Chad Conrad

@Matt DevincenzoI was working in Dallas in August 2011 - I'll take -45F over 112F any day.What amount of insulation is wrapped on this ductwork to prevent it from heating up during a prolonged spell of 90+F temperatures (where it could easily be 120F in the attic space)?

Heat pumps don't heat well with outside temperature below 20 degrees...

In addition they were not zoned so basically the previous owner on the first floor controlled the temperature.

It has higher elevation, so day time temperature is not too brutal in summer :-) Should be quite a nice place to live and play@Justin S., Nice to see fellow Chandlerites on this site.