Yes you should be fine as long as you keep the thermostat set at reasonable settings (check local state ordinances, some have specific min temps).

Are there temp prop managers that can fill in?

I'll turn it on when the temp outside is comfortable but it's getting stuffy inside.

Western AZ along the Colorado River is good for older retirement people up to Flagstaff is a great winter and college town   Tempe is a fast and growing family town  Wide range of different prices and construction depending   Good Looking

I work as a contractor (temp) but the pay is good.

Just as an example: Our highest electric bill here in Katy (west Houston) has been $230 last August when the outside temp. was in the 100s for several days.

So I would be very careful if you need more than $1500 rent to break even or just barely get +cashflow I think the rents will stagnate and as more apartments get build and rehabbed they will create more options for singles and the people with families who can afford to pay $1500+ in rent will be looking for a home to own renting is prob temp and if they like renting they would prefer swanky place which usually new apts offer that lifestyle and pet friendly its prob only credit that is stopping them and as time passes if they make good decisions the old stuff on their credit comes off increasing their score.  

@Michael BowserSo as far as a entry lock to their apartment you are responsible to make sure it's properly working,I wouldn't trust them to do it or expect them to do it right.If if was damaged, then charge them for repair.It's a huge security issue something I personally wouldn't let go 1 day.If they cracked the frame then OMG was it a break in,, did they make a police report,, if not charge them.Cracked frames are not just a put a piece of duct tape on it,could mean a whole new jamb.The extended fix-it metal door jamb things are ok for temp job, but look terrible and is not what was there before.Take photo's, charge them, replace, not repair. 

I have seen windows open in winter on units where the landlord pays (no telling how long their showers are or how high they keep the room temps).

High pressure, high temp.