It's complicated at first but it will become second nature.

There is currently only 1 furnace for 2 units and the owner pays for heat (Natural Gas).

Only allocating 5% per month I don't think properly accounts for the turn costs you'll naturally have when a tenant moves out. 

But I have no doubt I will succeed - I'm a hungry millennial and a natural overachiever ;) As an executive at a large financial institution, I make a very good income and I plan to save a good chunk before buying my first MFH property (or 2nd property I suppose).

It's just the nature of the game.

does that directly imply with natural disasters?

For naturally occuring rehabs/updates I expense out the materials through the real estate buisness and take no wage.

Why....because it is a smart business decision naturally.

Back story: My area is not serviced with natural gas and gets a lot of snow. 

Would it be best to learn more about real estate through my job as a potential real estate agent or something of this nature?