For homes with media filters installed in the attic next to the indoor unit, place the Filter sensor inside the media filter cabinet using the sensor's built-in magnets.
Media filter examples
Installation Steps
Partially pull out the media filter from the cabinet
Create space between the filter and the cabinet wall
Place the Filter sensor on the cabinet wall downstream of the filter
Use the sensor's built-in magnets to secure it to the metal wall
Ensure the sensor is stable and won't fall when the filter is reinstalled
Push the media filter back into position
What Does "Downstream" Mean?
Downstream means after the filter, in the direction of airflow toward the blower. Air flows from the return duct, through the filter, then to the blower. The sensor should sit between the filter and the blower to measure the pressure drop across the filter as it gets dirty.
Media filter cabinets provide metal walls for secure magnet attachment and remain accessible for sensor maintenance.
Media filter cabinet showing sensor placement downstream of filter
Questions?
Contact the SmartAC.com support team:
832-377-0830 (PRO Support)
833-SMART-AC (1-833-762-7822)