So this is a bit of a lessons learned / warning when it comes to repairing certain elements in rental properties. Very interesting so I thought I would share it with everyone: 

I got a call last week from one my tenants stating that the AC was not working in one of the units. I took a look, noted that while the AC was working, the airflow wasn't the greatest. I called up the AC repairman and they corroborated what I initially thought. AC worked, but something was preventing the maximum airflow from reaching the 2nd unit. So it turns out they recommended replacing this part called a capacitor that from my understanding, initiates the startup of the blower within the AC and allows the air to start flowing. It also controls the power / efficiency of the blower itself. The repairman stated that the capacitor in my system wasn't operating at max effectiveness and proceeded to charge me $200 to replace the part.

I said no thank you, found the part on Amazon for 5 bucks. I am not kidding. Literally $4.99. Changed it out myself, airflow is improved. This was a complete joke. Beware of such companies that will markup parts to this degree. Just wanted to share with everyone because I thought it was hilarious.