If your bonus is dependent on how many hours you bill (and you pay for people to deliver your dry cleaning and food so you can keep billing), why would you be behind in your rent and draft letters back and forth arguing about it?

Teeth, hair they are both on the same head. if I put some of my business cards in your vacation rentals, I can give you 10% on every victim, I mean patient... posted by @Lucas Carl:Seems you should know this info well before you start a management company.

@Chris Seveney for context this would be a primary residence and house hack, so it's a little less cut and dry vs. other investment purchases I've made previously but I hear you on your analogy and POV.

De Humidifiers are more efficient for humidity and also help with the temperature "fee".  60 moist is a lot colder than 60 dry.  88 dry is a lot cooler than 88 moist.S.

Here having a dry hill to sell during really wet times is about the only way to know you'll get somewhat of a premium.

My advise, the same I gave to the OP, do a wholesale deal dry run.

If you are in a dry climate where temperatures only reach the '80s in the summer and cool off at night, then window units are only occasionally needed and sufficient.

It is not nearly as cut and dry as if it were in your name and it may not be worth his time and effort to deal with it.

Evaporative coolers function by sucking the hot dry air through filter pads of aspen or plastic mesh that are saturated with water that circulates via a pump in the cooler sump.They need twice yearly maintenance to even achieve their 5-10 year lifespan. 

Get the water out, dry it out and see if it'll run.