I think your main way to fight back is to switch providers, though that is more work replacing machines and contracts than I'm interested in taking on at this time.

Your a month late in taking action.

Typically you want someone who makes at least 3x the rent in take home income. 

If you could reroute the return to intake air from near the ceiling of the top floor, it may help circulate the warm air out much better.

And if the tenants intake the delivery you know they will claim no responsibility if something breaks or it doesn't work upon opening.Do I want a warranty claim yes, I do. 

@Jerry Burns I would also be interested in taking a look if you are sharing :)

The fact that it was on the same block I grew up on as a kid was the difference in taking this one down though.

We're handling intake forms manually for the next week or so.

I have to do the grossest thing in my 30 years of life in taking garbage out of a shed in the middle of summer wreching as I put it in the back of a pickup...Then evicting her only to get an emergency assistance check to cover her back rent, only to evict again, all the way to physical eviction, finding out that she was in jail the week during the eviction process...left all her junk in the house.

I bought a Mig welder and a bunch of tools and suicided the doors on my Ford Ranger, shaved the door handles, sunk some different taillights into the back, ported the intake, custom built an exhaust, modified this, customized that.