Replace media air cleaner cartridge
Why it matters
Media air cleaners use thick 4–5 inch pleated filters (Aprilaire or Honeywell) that capture far more dust than 1-inch filters. A clogged cartridge reduces airflow and forces the furnace to work harder.
Stop forgetting to do this.
Hearth generates a personalized maintenance schedule so you never miss another replace media air cleaner cartridge.
How to do it
- 1
Turn off the furnace at the thermostat or breaker.
- 2
Locate the media air cleaner cabinet (usually on furnace or return ductwork).
- 3
Note the cartridge model number and dimensions from the existing filter.
- 4
Order a replacement cartridge matching your cabinet model.
- 5
Open the access door or hinged panel on the cabinet.
- 6
Slide the old cartridge straight out and set it aside.
- 7
Insert the new cartridge, ensuring the gasket seals all the way around.
- 8
Close and latch the cabinet door securely and restart the furnace.