How often should I clean the air filters on my Fujitsu wall-mounted air conditioner?

Clean the air filters once every 2 weeks under normal use. Using a clogged air filter with dust will lower product performance and may cause airflow reduction or increase in operating noise. You can remove dust using a vacuum cleaner or by washing the filter with neutral household detergent and warm water, then drying it thoroughly in a shaded place before reinstalling. (Page 10)