Subaru 2002 Forester Owner's Manual page 152

Replacement schedule:
Every 12 months or 7,500 miles (12,000 km) whichever comes first
NOTE
The filter can influence the air conditioning, heating and defroster
performance.
B Replacement procedure
1. Remove the filter cover from the cooling unit by removing the two
(2) clips with a blade screwdriver and unhooking the hinge. The
screwdriver must be inserted into the top of the clip. Do not pry the
middle on the clip.
2. Remove the old filters.
Old filter
HS0254
Climate control
HS4007BB
– CONTINUED –
4-13