Only "Absolute 0" is, if getting anally technical, actual 0 degrees as in 0 heat of any kind. 

Probably they don't or you can watch them get heated up on the spot and make stuff up.Most of the national acts really seemed to be selling something else that probably won't help you.....database software for $30-100/month.   

If the lease requires Renters Insurance, do they have proof of the tenants current coverage4, Age of last update to the major systems (Roof, Electric, Plumbing, Heating)5.

Make a list of all assets and their components (how many roofs, refrigerators, heating systems, etc?)

The property had window AC's and a gas fireplace upon purchasing so we immediately had central heating and AC installed.

When it is time replace your central heating and cooling system with split units.  10.  

They don't like heat, which is why many computers have fans.

A garage that is not properly insulated may be uncomfortable to live in and may not meet local building codes for habitation.Heating and cooling: In order to make the garage comfortable to live in, you will need to install heating and cooling systems.

I had one concern about the older heating system in the property and needing to replace it soon, but OCF was even willing to add a clause to the purchase agreement where they would replace it if it failed within the first year.Communication has always been top-notch, which is exactly what you want as an out-of-state investor.The estimated cap rate has been spot on at 10% so far, so OCF does not inflate the estimate to make sales!

There are also winter issues (e.g frozen pipes possibly bursting and having to crank up the heat to prevent that) that we don't deal with in CA.