They said I don't need the insulation - because the DeHu will keep the temperature in the crawlspace mild, year round. 

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. 

We have a lot of precipitation and freezing temperatures. 

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?

They are typically at least $300-500 though.There's also some models of window air conditioners that work in reverse cycle but every one I've seen is at least $400.A 2 ton ductless system is $950 on eBay and will probably work better in heat pump mode at low temperatures.

I'm trying to find out what the "TEMPERature" is like out there right now....