Reviews Washable Furnace Filter

K&N 20x20x1 HVAC Furnace Air Filter, Lasts a Lifetime, Washable, Merv 11, the Last HVAC Filter You Will Ever Buy, Breathe Safely at Home or in the Office , HVC-12020

The LAST AIR FILTER YOU WILL EVER BUY: Washable furnace filter for long-term home HVAC filter savings.
SAVE MONEY: Save $30 annually with reusable air filter compared to disposable, one time use filters.
INCREASE HVAC EFFICIENCY: Excellent airflow to help maintain HVAC system efficiency.
GUARNATEED QUALITY: Premium design and construction for excellent air filtration.
DIRECT REPLACEMENT: Designed to fit directly into your filter register.
IMPROVES AIR QUALITY: Helps capture dust, pollen, and other contaminants.
EASY TO CLEAN: Remove filter, apply K&N HVAC filter cleaner, rinse with low pressure hose, let filter dry, return filter to housing.

Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1″ home air filters for your furnace, air conditioner, or HVAC system.
Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through.
Filtrete 1000 MPR (Microparticle Performance Rating) equates to MERV 11.
1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters.
For optimal performance, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters..
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.
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 that works for you!.

Patented Filter Technology: Castle Filters use 3 layers of ¼-inch open-celled foam, with a patented tacky center layer that catches dust like fly paper. Proudly made in USA - US patent #10,183,249 B2.
MERV 6: The Super-Flow MERV 6 air filter is an alternative to traditional see-through woven fiberglass or washable filters. The air filter offers superior protection of your equipment and home while still allowing maximum air flow.
AC Air Filter: Castle Filters have 400% more surface area for dust and other particles to collect. The internal foam is treated with a sticky material to collect more dust while letting the air pass through.
Lasts One Year: The furnace filter holds up to 20 times more dust than a pleated filter. While pleated filters need to be replaced about once a month, the Castle Air Filter lasts one year which is 4-12x longer than the others.
Save Energy and Lower Land Fill Contribution: Castle’s HVAC air filter helps you save energy with its advanced filtration technology and also helps in generating less waste as it need not be changed every month like a standard filter.

The LAST AIR FILTER YOU WILL EVER BUY: Washable furnace filter for long-term home HVAC filter savings.
SAVE MONEY: Save $30 annually with reusable air filter compared to disposable, one time use filters.
INCREASE HVAC EFFICIENCY: Excellent airflow to help maintain HVAC system efficiency.
GUARNATEED QUALITY: Premium design and construction for excellent air filtration.
DIRECT REPLACEMENT: Designed to fit directly into your filter register.
IMPROVES AIR QUALITY: Helps capture dust, pollen, and other contaminants.
EASY TO CLEAN: Remove filter, apply K&N HVAC filter cleaner, rinse with low pressure hose, let filter dry, return filter to housing.

Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1″ air filters for your furnace, air conditioner, or HVAC system.
Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, while letting cleaner air flow through.
Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores.
Filtrete 600 MPR (Microparticle Performance Rating) equates to MERV 7.
For optimum performance, change your home air filter every 90 days or sooner.
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.
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 that works for you!.

Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1″ air filters for your furnace, air conditioner, or HVAC system.
Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, while letting cleaner air flow through.
Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores.
Filtrete 300 MPR (Microparticle Performance Rating) equates to MERV 5.
For optimum performance, change your home air filter every 90 days or sooner.
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.
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 that works for you!.

Outperforms fiberglass, washable and non electrostatic 3 month pleated 1″ home air filters for your furnace, air conditioner, or HVAC system.
Exclusive Filtrete Brand 3 in 1 technology from 3M traps unwanted air particles, letting cleaner air flow through.
Filtrete 1000 MPR (Microparticle Performance Rating) equates to MERV 11.
1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters.
For optimal performance, change your home air filter at least every 90 days for 1 inch filters, and at least every 12 months for 4 inch and 5 inch filters.
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.
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 that works for you.