For an excellent air quality upgrade from the original MERV3 filters, consider the MERV8 replacement filters.
This replacement filter kit features 2 pleated air filters with a MERV8 rating. Suitable for HERO 200H and HERO 250H Fresh Air Appliances.
The filters will collect particles such as mold spores, pollen, cement dust, carpet fibers, debris, lint, and insects. With normal usage, it is recommended to replace the filter every 3 months.
NOTE: Upgrading to a more efficient filter will affect the airflow capability of your appliance.
Kevin Sheppard (verified owner) –
I received my shipment promptly. They took extra steps verifying security of my order.
The filters are still expensive but cheaper than Amazon