I have a job making 52,000 a year welding 60 hours weekly.

Why not buy a thermometer from the dollar store and put it in the fridge to show the true temperature?

These are the stairs you often see on 60's through 80's buildings with a central steel stringer and precast concrete steps welded to it.The stairs at this property are in need of some work - the biggest issue is that many of the steps are cracked or spalled badly enough to need replacement,  one step in particular is bad enough that it is becoming a safety issue.   

Be careful installing vinyl plank on hot days where temperatures exceed the install recommendations.

It took place pretty soon after the job was finished while the apartment was still vacant probably due to change in temperature. 

Having an old rental with a lot of kids will crack walls so will extreme temperature changes .it can look good and blend out well if you have the skill and patience .

We are assuming it is due to the humidity and changing temperatures we see here in upstate NY.

What you are proposing is referred to as a partition sale.Some things to consider:You might want to take the temperature of your siblings first to determine whether this is even appealing to them.

Daikin could work in colder temperatures though

If the temperature drops below -15 degrees F, then the furnace kicks in to provide some assistance.