HVAC filter arrow The arrow should face the direction the air is flowing. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. The same is true when changing the air duct filter. The arrow should point toward the unit.
How do I change the filter on my Trane furnace?
https://www.youtube.com/watch?v=-ZnNr0L7Y30
Where is the filter located on a Trane furnace?
https://www.youtube.com/watch?v=hpMAvtzOUSc
Can you use a MERV 13 filter in a Trane furnace?
Clear The Air's Trane Perfect Fit Merv 13 filters are the best possible choice in residential HVAC filtration. ... This filter is the ideal choice for asthmatics.