Filtrete Allergen Defense Furnace Filter

A MERV 11 rating indicates that this filter is highly effective at capturing smaller particles that lower-rated filters might miss. It is specifically designed to trap microscopic irritants like pet dander, pollen, smoke, and smog, making it a strong choice for households with allergy sufferers or pets.

No, the pleated construction is actually designed to increase the surface area of the filter media. This allows it to capture more particles while maintaining consistent airflow, which helps your HVAC system run efficiently without putting extra strain on the motor.

No, these filters are designed for single use only and cannot be washed. Washing the synthetic material will damage the electrostatic charge that allows the filter to trap allergens effectively.

For optimal performance and to keep your HVAC system running smoothly, you should replace these filters every three months. If you have multiple pets or live in a particularly dusty environment, you may want to check them sooner to ensure they aren't clogged.

Yes, this filter is designed for standard central air conditioning and furnace systems that accept a 1-inch deep filter. Always double-check the dimensions of your current filter slot before purchasing to ensure a proper fit.