Filtrete Allergen Defense Air Filter, 1000 MPR, 9817-4, 18 in x 18 in x 1 in (45,7 cm x 45,7 cm x 2,5 cm) Case of 4

• #1 Recommended Brand* (*Filtrete Brand is the most recommended brand of HVAC Air Filters based on the US Filtrete Brand Health Tracker, Ipsos, June 2022)
• A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program (www.filtrete.com/ChangeReminders) that works for you!
• ATTRACTS AND CAPTURES particles such as lint, pollen, dust, pet dander, smoke and smog
• CREATE A CHANGE COUNTDOWN in the Filtrete Smart app. Simply use the app to scan the barcode on your filter’s packaging, then choose 30, 60 or 90 days for your replacement countdown. When the lifespan is up, you’ll get a notification to change your filter
• DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
• FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1 in. filters
• FOR RESIDENTIAL use only
• MPR 1000 has a rating of MERV 11
• OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system
• The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it

The Filtrete Allergen Defense Filter outperforms non-electrostatic pleated and washable 1-inch filters at capturing microscopic allergens like dust, smoke, and smog particles and large allergens like mold spores and pet dander. Opt for a Filtrete Allergen Defense Air Filter to transform your central heating and cooling system into a whole-home air filtration operation. This no-nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog).

Trusted Filtrete Brand Model

The Filtrete Allergen Defense Air Filter, model 9817-4, is a top choice for home air filtration. This filter is part of the well-known Filtrete brand, which is the #1 recommended HVAC air filter brand in the US.

Choosing this exact model ensures you get reliable performance backed by Filtrete's reputation. It’s designed to improve your home's air quality by capturing a wide range of allergens and particles.

Effective Particle Capture

This filter uses Filtrete Brand 3-in-1 technology from 3M to trap unwanted particles while allowing cleaner air to flow through. It captures lint, pollen, dust, pet dander, smoke, and smog effectively.

With a Microparticle Performance Rating (MPR) of 1000, it targets microscopic allergens like smoke and smog, making your indoor air healthier and more comfortable.

Perfect Size And Format

The filter measures 18 in x 18 in x 1 in (45,7 cm x 45,7 cm x 2,5 cm), fitting standard HVAC systems. Its 1-inch pleated format is designed for easy installation and optimal airflow.

This size and format work well with most residential heating and cooling systems, helping maintain system efficiency while improving air quality throughout your home.

Convenient Pack Of Four

This product comes as a case of 4 filters, providing a convenient supply for regular replacement. Changing filters every 90 days helps keep your HVAC system running efficiently.

Having multiple filters on hand means you can maintain consistent air quality without frequent trips to the store, ensuring your home stays allergen-free longer.

Optimized HVAC System Performance

Using the Filtrete Allergen Defense filter helps your heating and cooling system work better by preventing airflow blockages. A clean filter reduces energy waste and keeps your system running smoothly.

Regular filter changes, supported by the Filtrete Smart app’s change countdown feature, ensure your system stays efficient and your home air stays fresh and clean.