Enron, Lehman Brothers, WorldCom, General Motors, Citibank, Washington Mutual all went bankrupt, and the list goes on and on. 

The motor was off balance and the fan blade inside it was cracked.

The motor can be replaced, the circuit board can be replaced, etc..    

A long private drive leads up to a motor court and a stately Tudor Revival house with leaded glass mullion windows, imposing archways and high-pitched roof.

I've mitigated this by recently replacing capacitors in the outdoor AC unit as well as the blower motor and its capacitors inside the furnace.Correct me if I'm wrong but it seems like the price of this home may actually be an advantage in terms of capex because the cost of a given repair isn't as large of a percentage of the value of the property as whole.In other words if I have to spend $10k on a new furnace, it seems like I'd rather be putting it into a $500k house than a similarly sized $200k house somewhere else.Your point about my stagnant equity is exactly why I'm posting here.

I also have a homemade spray booth with the motor outside the airpath, but it's not technically a non-ferrous explosion proof.

I purchase a duplex (or double) in Indianapolis in 2019... near the Indy Motor Speedway and 1 block off main street. 

I purchased a duplex (or double) in Indianapolis in 2019... near the Indy Motor Speedway and 1 block off main street.

After having a hair dresser live there for a year, it clogged and burned up the mother board and motor.

These properties are in Lima, Ohio which is an industrial town with an oil refinery, chemical plants, US Military tank plant, ford motors and couple other big businesses.