Filtrete Healthy Living Ultra Allergen 4 MPR1550 air filter

This whole-house air purifier from 3M Filtrete is a replacement for a forced-air heating/cooling system’s filter.


Overall score for the 3M Filtrete Filtrete 1550 is mainly how well the model removed dust and smoke from a test chamber, plus quietness for room purifiers and airflow resistance for whole-house units.
Dust/pollen/smoke removal: How well models cleared air of fine clay dust and cigarette smoke. Ones that scored well for dust removal should perform comparably for pollen. Airflow resistance: How freely air passes through a whole-house unit.

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