Topic
4 guides.
All three sell MERV 13 filters. Filtrete publishes the most performance detail, Nordic Pure sells MERV-rated multipacks, and Honeywell's strength is 4-inch media filters for its cabinets.
The HCM-350 is a long-running evaporative bedroom humidifier with a dishwasher-safe tank. It needs a Filter A wick every 30 to 60 days, and Honeywell's own store now lists the white version as discontinued.
The HPA200 is the HPA300's smaller sibling: two R filters instead of three, 200 cfm of certified smoke CADR, simple buttons. Honeywell still sells it, but Amazon now lists only its filters.
The HPA300 is the plain-box classic: lots of certified airflow for the price, simple buttons, no app and no sensor. Its catch is filter upkeep: three HEPA filters and four pre-filters a year.
