Now - after a prolonged time (based on the factors of time, temperature and the amount of water) Stachybotrys will begin to develop.  

Hey @Rickie Patterson Jr , thanks for sharing your experience.Here's one that comes up often on our projects - for exterior jobs, how important is it to stay within the recommended temperature ranges when painting, and are there any tricks to make a job turn out well even if its colder?

The best thing you can do is run the air conditioning, keep it set at a moderate temperature, say mid-to-high 70*'s.

If upper tenant does not have to worry about heating cost, then hopefully they will not keep the temperature too low for savings and freezing the lower tenant.

Chicago has had two consecutive years with temperatures below freezing from just after New Years until April.We've had mild summers lately, but you also cannot evict in summer heat.IL is a state where we have people known as "professional tenants": they pay first and last month's rent, and never pay again.

They come with moisture and temperature sensors. +- $90 a piece. 

Recommended that I change out the valves to better regulate the water temperature.

One option is to turn the temperature setting on your hot water-heater down to prevent it from producing scalding temperatures.

Just wanted to gauge the temperature out there for the experienced wholesalers/investors in Mass and specifically near Boston on where I need to be when putting in offers to wholesale and assign to others.

I think I understand now and you are saying that you have heat but the thermostat is downstairs so upstairs would have no control over the temperature .... is this correct?