I perceive the dirt in automotive environments to be finer-grimier and leaf bearing.
Home filters are for pet hair, human hair, dust bunnies and are finished flat. Leaves and pieces of leaves would cover the flat surface area quickly and choke off airflow. Their coarseness wouldn't catch the powdered grime of roadways. Also, fitting a frame to a hunk of cut HVAC filter stiff enough to withstand insertion into many auto CAF frames would destroy any $ benefit.
Also, the difference in air velocity between the two types of systems equates the use of HVAC filters in a car to stopping bullets with chicken wire.
Inspiring minds are glad to illuminate.
Home filters are for pet hair, human hair, dust bunnies and are finished flat. Leaves and pieces of leaves would cover the flat surface area quickly and choke off airflow. Their coarseness wouldn't catch the powdered grime of roadways. Also, fitting a frame to a hunk of cut HVAC filter stiff enough to withstand insertion into many auto CAF frames would destroy any $ benefit.
Also, the difference in air velocity between the two types of systems equates the use of HVAC filters in a car to stopping bullets with chicken wire.
Inspiring minds are glad to illuminate.