Some air conditioners, for example Mitsubishi heavy industries SRK20ZJ-S have "self clean" and "allergen clean" functions. First takes 2 hours to complete, latter 1.5 hours.
How often should they be used? I understand this depends, but roughly – once per day/week/month?
Best Answer
In lieu of any manufacture recommendations, I would suggest that you use the self-clean method whenever you notice a smell coming from the unit. As a related tip, if you ever notice the A/C in your car smelling bad, run it on max cool and max fan for 20minutes as this kills most of the mold and bacteria that is causing the smell; my guess is that this 2hour cycle does something similar.
I'm really not sure what the allergen clean might do but maybe run if a couple times a year.
It's probably worth noting that most A/C units don't have these functions and work fine for many years; it might be more of a marketing gimmick than anything else.