I am no expert but they make a spray foam cleaner with a brush to clean acs! Something like https://www.amazon.com/SAFE-Foaming-Coil-Cleaner-19/dp/B007I7KZN0/ref=mp_s_a_1_3?crid=1OANC9P4L3OST&keywords=foam+ac+cleaner&qid=1684030648&sprefix=foam+ac+%2Caps%2C238&sr=8-3 I’d look up a tutorial on YouTube!

When I worked at Lowe's we sold alot of this cleaner and it doesn't hurt to have some Condenser Brushes for a good cleaning.