The Tier1 20x30x1 air filter carries a MERV 13 rating, placing it among the highest-performing residential filters available. It captures particles as small as 0.3–1.0 microns, including pollen, dust mites, pet dander, mold spores, smoke, smog, bacteria, and virus carriers. This makes the Tier1 20x30x1 6-pack ideal for households with allergy sufferers or anyone seeking cleaner indoor air quality.

Tier1 recommends replacing this 20x30x1 pleated air filter every 90 days under normal conditions. However, homes with pets, smokers, or residents with respiratory sensitivities should replace the filter every 30–60 days. Since this product ships as a 6-pack, you’ll have an 18-month supply on hand, ensuring your HVAC system always has a fresh filter when needed.

The nominal size is 20" x 30" x 1", while the actual dimensions measure approximately 19.5" x 29.5" x 0.75" to ensure a proper fit inside standard HVAC return vents and furnace slots. Always verify your system’s filter size by checking the existing filter frame before ordering the Tier1 20x30x1 6-pack.

This Tier1 filter features synthetic electrostatically charged pleated media supported by a beverage board frame and a metal backing grid for structural integrity. The electrostatic charge attracts and traps microscopic airborne particles that standard fiberglass filters miss, while the deep pleats increase surface area for maximum dust-holding capacity and extended filter life without restricting airflow.

The Tier1 20x30x1 MERV 13 filter is engineered with optimized pleat spacing to deliver high-efficiency filtration while maintaining healthy airflow for most residential HVAC systems. Unlike denser HEPA-style filters that can strain blower motors, this Tier1 filter balances particle capture with low pressure drop. For best performance, replace it on schedule to prevent airflow reduction caused by dust loading.