I'm curious to know what's the right thing to do in this situation...I've explained to the Bottom tenant he has the luxury of controlling the temperature of the house.

In some cases, I've asked Contractors to pick items up from the warehouse that I've purchased from.

The weather gets fairly cold in the winter and when the temperature drops to 5 degrees and a furnace goes on the blink expect to pay 200% more than the average cost for a repair, or pay for water damage caused by frozen water pipes.

I have been on the tenant side more than once and all the asset protection devices in the world do nothing for you if you are the guy who had to sell his warehouse to pay my attorneys’ fees judgment.  

Start out at room temperature and turn up the heat slowly, he's not going to notice.The worst mistake I made as a novice landlord was to think "Oh my tenants are great", I don't want to scare them away with yearly increases.