I'd suggest talking to them and telling them that this is the third time and you are going to install something around the AC (and their expense), so there isn't a fourth occurrence. 

argument for stocks, corporate earnings rose 11.39% this quarter year/year, so puts forward PE on sp500 at 19.9, not far above historical avg of 18.2 PE, and the earnings of companies are growing much faster(driving PE lower) than the historical price appreciation of real estate, which per every long term study has it pegged at about the inflation rate (Dutch economist Piet Eichholtz built a price index of houses on the Herengracht {most expensive canal, homes} in Amsterdam, with a constant quality from 1628 until 1973, which has been extended to present, 400yrs).

I do quarterly inspections of the units and other inspections of the property.

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

New Western host an REI on Tap once a quarter located in Philadelphia or Media.

. • Establish solo Roth 401k• Make quarterly estimated tax payments (?)

Probably one a quarter.

Learning lesson for quarterly inspections!!  

I use a lot of different cards based on the best categories on my spending for cash back/miles, but one under the radar for rental investors that gives 5% cash back on up to $2,000 spending per quarter on utilities category when chosen is the US bank cash+ card.I max out on utilities spending with the card every quarter.

At the end of my fourth year I was a full time agent and a full time real estate investor. 2002 I started a property management company.