Stop in for a cup of coffee

Afternoon fellas. Low 80's outside and quite humid. I have the cover off the A/C unit outside for a condenser cleaning and a splash of R22. Hopefully it will take care of my evaporator freeze up. Damn, it's a old system. It was old when we move in 25 years ago. The HVAC contractors want to replace it all and it is a high bred system adapted to our 100 year old air handler system. It was well matched and always worked well but is just getting tired.