While your filter is drying, wipe down the front grille and the plastic casing. Use a damp cloth with a little soap. Avoid getting water inside the electronic parts.
Wipe the vents and the control panel. You know how finger-smudges look on a phone screen? Same vibe here. Clean it up, and it feels brand new.
DEEP CLEANING a window air conditioner unit (step-by-step details
Now, this is the fun part. Compare the fresh filter to the old grimy one. It’s like comparing a freshly washed white sneaker to one you wore in the mud.