i also had HVAC mystery issues in my first duplex when we house hacked it.Regarding the Daikin Mini Split - I have one in the 3rd story of my current home and it seems to work great for us. 

On crime... one positive trend is that APD, in partnership with the courts, has lowered the previously skyrocketing murder rate.

Int rates are a mystery.

Mysteriously I got a vague notification that the listing went live again.

I watched the webinar yesterday and mysteriously they're still having the same chat issues that the assistant wasn't able to fix. 

We also do a property orientation and show them how to operate the house, change filters and batteries, turn off water main - and of course the mystery of GFCI outlets

Cap-x is not half as mysterious or illusive as some like to paint it to be.

They've experienced a couple of murders I think in STR and some prostitution problems. 

Solving the great mysteries of life, for all of us, generally requires time and bandwidth, resources unavailable if you're spending all your down time looking for the next off-market deal. 

We had a case in my state where a murder happened at a rental property.