Nu-calgon 494012 Electrostatic Hvac Air Filter 16x20x1 Merv 8

Product Description

The NU-CALGON 494012 is a permanent electrostatic HVAC air filter rated MERV 8, designed for residential and light commercial forced-air systems. It generates an electrostatic charge as air passes through a maze of static-prone synthetic fibers, attracting and holding airborne particulates until the filter is washed and reinstalled. At 16 inches x 20 inches x 1 inch, it fits standard filter slots found in furnaces, air handlers, and return-air grilles. The MERV 8 rating meets ASHRAE standards for particulate removal, capturing common household contaminants including dust, pollen, and lint. Licensed HVAC technicians and knowledgeable installers handle replacement and maintenance.

The 494012 is suited for residential and light commercial forced-air HVAC systems that require a 16 inches x 20 inches x 1 inch filter. Its washable, reusable design eliminates the recurring cost and waste of disposable filters. The electrostatic filtration method maintains airflow while delivering effective particulate capture, making it appropriate for systems where sustained airflow performance and long-term filtration reliability are priorities.

Key Features

• MERV 8 rated per ASHRAE standards for effective particulate removal
• Electrostatic charge generated passively by airflow through synthetic fibers — no power required
• Washable and reusable with a lifetime warranty, eliminating disposable filter replacement cycles
• Synthetic fiber construction resists moisture and maintains structural integrity through repeated wash cycles
• Fits standard 16 inches x 20 inches x 1 inch filter slots in furnaces, air handlers, and return-air grilles

Compatibility

Designed as an OEM-style replacement or upgrade for residential and light commercial HVAC systems requiring a 16 inches x 20 inches x 1 inch electrostatic or disposable air filter slot.

Installation Notes

Installation is typically performed by a licensed HVAC technician or a knowledgeable installer familiar with forced-air system maintenance. Power down the HVAC system at the thermostat or disconnect before removing or inserting the filter. Verify airflow direction markings on the filter frame align with system airflow before securing. When cleaning, rinse the filter with water and allow it to dry fully before reinstalling to maintain filtration effectiveness.

Technical Specifications

• Size: 16 inches x 20 inches x 1 inch
• MERV Rating: 8
• Filter Type: Electrostatic, Washable Permanent
• Material: Synthetic
• Warranty: Lifetime

Standard Information

• Brand: NU-CALGON
• Manufacturer Part Number: 494012