Bivas,A 100-amp service is good for a home of less than 3,000 square feet that does not have central air-conditioning or electric heat.

The man had ran a Heat and Air business in the town for many years and apparently had even performed free repairs for needy people to restore their heat.

If that doesn't work in your market after awhile, I would second @Ken Nyczaj and @Jordan McNelly's idea to drive for dollars if you're on a budget.

Controlling temp depends on whether there is central heating/air or individual.

As an Air bnb host do you lose the reviews you have for a property if you sell that property?

In Florida the difference in price for a property with central air vs one window units is huge.

In that vein, a fellow Air Force buddy was recently telling me about selling two rental properties in one location in order to free up capital to buy three others in another location.

I have an Air BNB unit that is profitable, however there is a loan against the property. 

I have a podcast - Pillars of Wealth Creation, that has been running for over 3 years that airs 2+ times/week.

I think it's only a couple of amps, so it doesn't need its own circuit or anything, but you need to have an outlet or junction box reasonably near the water heater.Does the closet currently have a louvered door, or vent louvers in the walls, or maybe a pipe coming down from the attic or in from outside (not the flue pipe - a separate one, just for air) to provide air for the water heater?