Bad Coil? Green Discoloration On Coolant Lines

I have a 20 year old system put in by the builders. Do these coils look like they need to be replaced? Is my refrigerant leaking? What does it mean when there is some green discoloration on the coolant pipe and rust on the coils? My system uses R22. Thank you

 

Greetings e2139,

As long as the System has not lost it's charge, the "green color" on a coil will not hurt it.

What you should have done on a yearly basis is have a HVAC Tech, "Clean & Tune" your system, which will involve pressure & leak checking, as well cleaning the Condenser & Evaporator coils, checking air flow etc.

And, as long as the Evaporator coil isn't leaking down in your Air Handler/Duct work via that rust, you should be good.

I will say, that after 20 years of usage,.... "If" You were concerned about Efficiency & Warranty, then it's time to upgrade to a new unit.

 

Take a good look at the condensate pan for what shape it's in.