None need conditioners .

Last month they told me the air conditioner wasn't working well so that day I sent my guy over and the next day it was replaced.

Who's cleaning the toilets and where do people store their hair products and why is my conditioner empty after just one week?

We are renovating a 6-unit in which we removed the window and under a wonder (think motel style) air conditioner and replacing with mini-splits.

Well..........To be fair, window are conditioner units are actually fairly common in C-class duplexes and such.

Yes, my first home had a boiler, the biggest drawback is leaves you dealing with window air conditioners more often than not. 

You have to be financially prepared for things to break and be replaced; major things like air conditioners or disasters like a broken pipe. 

What about a water heater, air conditioner or an eviction?

Agree with many comments, my first investment property is not in a war zone but in a working class neighborhood yet had  broken front windows and a stolen air conditioner.

:(I don't really need A/C but I thinking of using the a wall mounted Ductless ( Mini Split ) Heating / Air Conditioner with an external unit as a replacement.If I get one of these then I would seal the floor furnance.Anyone, have experience with these ?