Completed annual maintenance on both train and Goodman units. Checked pressures, amp draw and capacitance and noticed a couple of issues and brought them to the attention of the homeowner. Checked indoor fan amps heater amps and flushed both condensate lines. No evidence on the indoor unit standing out as having any issues. While doing the maintenance I found that the original 2011 capacitor has finally run itself out of range. I also found a burned and pitted contactor which is not safe to continue to allow to run in the condition that it’s in. The immediate need would be to have both of these parts replaced. Both of these parts are on the 2011 Trane unit. Also while doing the maintenance I found the Goodman system to be a little bit low on refrigerant. It currently only has a 15° temperature differential. The pressures indicate that it is a little bit low. I am guessing between a pound to 2 pounds at most. Below is an estimate to have the immediate needs taken care of. It is always