What kind of condensation on roof with HVAC is normal? Roof damage? (grill, drain)

[JoeJude]

Ok so I have a 21 year old HVAC on my roof, it seems to drip directly from the unit not just into the condensation tube, I am noticing yellowish stains on my roof, the roof feels the same as it does everywhere else, just discolored, is this normal? Or should I call an HVAC guy. Photo attached.

Bonus question: the other hvac condensation pipe from in the attic runs to the front of my house, I notice it is dripping a lot more than the past few years, could these be related?

[K'ledgeBldr]

I'd say the discoloration is from the frame rusting.

Then again, you could possibly have a rusted out condensation pan for the "A"coil- allowing water to run wherever- instead of down the condensate pipe.

[btuhack]

Return air problems are likely if the drain is working. Return grill needs to be large enough...which has been a constant or pleated or dirty filters will back the condensate flow.

[JoeJude]

So is this an easy DIY if it's just changing the condensation pan?

[K'ledgeBldr]

Originally Posted by JoeJude

So is this an easy DIY if it's just changing the condensation pan?

No.
This is not a "DIY" project.