Welding cert while in and most of his associates paid for.

Heating systems such as heat pumps become significantly inefficient once the temperature drops below a particular range.

Make sure you go with a 2700 K color temperature and a high CRI(greater than 84) if possible, those are important for bathroom fixtures.MG

He told me he would set the temperature, then it would cool for a while, but return to a higher temperature later.

If the blower wheel is plugged up full of hair, get an HVAC tech out to clean it.Go around the house to all of the air vents, and make sure the flaps in them are open (use the little handle/lever/knob that sticks out of the grille), and that they don't have a rug or furniture or something blocking them off.Sometimes people will turn the thermostat down and then close the vents to try to regulate the temperature - if this goes on long enough, the evaporator (A-coil, inside coil) can get ice on it, which really blocks the air flow. 

The average temperature is 50 below zero, or so it seems, so basement offices would be relatively cheap to heat in winter, which is definitely important.

Two look like they're dying now from the recent extreme temperature fluctuations.

There is nothing in the lease that says they have to keep the heat at a certain temperature. 

The property manager knows that I am a type 1 diabetic (Insulin dependent diabetic for life) and the risk of not having a stable temperature of fridge can damage my insulin which cost almost $500 per box.

However, I can definitely see how days to contract would have value in letting you know the temperature of the market in a sense.