I arrived to a diagnostic for a unit that would not come on. Upon inspection, I discovered that the t-stat was bad, so I replaced it. The filter on the unit needs changed. Dual cap - 34/5 rated 35/5 - Contactor is pitted. Checked refrigerant lvls - 80/237 23SH. I provided the customer with a quote for a new system and he decided to move forward with it. Waived t-stat charge and charged for diagnostic.