[beenthere]

Sounds like under sized duct. Might not have enough return either. How thick is the insulation.

 

[beenthere]

Your evaporator coil is more than 50% blocked so all heat that is supposed to be picked up from the living space is not being picked up and distributed to the outside condenser and out into the air. You are recirculating the same heat and not removing any.


You need a severe evaporator coil cleaning and I'd be willing to bet a condenser coil cleaning as well (to be able to get rid of the heat) and an air flow static pressure check to certainteed that your system is moving proper air flow and proper air flow is mandatory to system charge.

Have your coils cleaned alone and you'll drop 10 degrees supply air, gauranteed.

OH, that dirty thing is the evap coil. I couldn't see it at first through all that dirt.

 

[beenthere]

A spray can of evap cleaner sprayed on both sides. Often, dirt can remain on the fins of the coil that you can't see. You can see where he sprayed the most cleaner, and where it barely had any cleaner on it, or it was really dirty in the other areas, and didn't clean the fins off very well. Also, you might want to clean your condenser coil. After cleaning the condenser coil. You may find that it freezes up. This would indicate that it was low on charge.