The Levoit HVAC Filter (MERV 11) helps clean your home's air by capturing airborne particles such as pet dander, lint, pollen, and dust. Designed with electrostatic cotton technology and pleated material, our MPR 1000 and MERV 11-rated HVAC Filter is ideal for effectively trapping both small and large particles while allowing clean air to pass through. You will receive two HVAC Filters in your package, and each filter lasts for up to 6 months*. For optimal performance, change your filter when notified by VeSync.
*Actual lifespan is subject to environmental air quality. Intensity of exposure to smoke, dust, and pollen may significantly alter the effectiveness and functionality of purification and reduce the expected lifespan.

The MERV scale is the industry standard for measuring the filtration level of HVAC filters, ranging from 1 to 16. The higher the rating, the smaller the particles that the filter can capture. MERV 11 filters can capture paticles 1.0 to 3.0 microns in size without compromising air flow in the home.

Insert the filter into the unit with the airflow arrow pointing into the vents（wall or ceiling）.

Find the HVAC filter on your home page to view its remaining life percentage.

Replace the filter every 3–6 months* to protect your HVAC system and maintain filter efficiency.
*Filter life varies. You may need to replace the HVAC filter more often if you live in an area with relatively high pollution.

Base on Levoit actual measurement results, you can check the filter color and the noise of airflow filter,Combine these situations to knonw whether filter needs to be replaced or not.