Castle FIlters: A New 1 Year HVAC Filter | Free Shipping In The Continental USA!

Castle Air Filters

buy the new castle filters hvac home filter

New Castle HVAC Filters REMOVE 93% of the most harmful particles in the air.

Buy Castle 1 Year HVAC Filters
buy the new castle filters hvac home filter

Defend Your Wallet

Save Money on Utilities

Buy Fewer Filters

Pay Less, for More!

Defend Your Castle

Pay Less, for More!

400% More Filtration

Without Sacrificing Air Flow

Save the World

Lower Landfill Contribution

Lower Your Carbon Footprint

100% Recyclable Frame



Castle Filter in Packaging

Save up to $113 Annually for Each HVAC Filter

If you are like most home owners your Furnace or Air conditioner is running 10, 20 or 50% more than it should be.

What is causing that and what is it costing you? There is an air filter inside every home HVAC system! When that filter is clogged with dust up to 50% less air is reaching your equipment. That means the equipment will have to run that much more to cool or heat the same amount of air. That is why the experts recommend changing a standard 90 day filter every month.


Defend Your Castle

Defend your castle with castle filters
Defend your castle with castle filters
Defend your castle with castle filters
Defend your castle with castle filters
Defend your castle with castle filters
Defend your castle with castle filters

Defend your Castle against intruders like bacteria, pollen, dander, mites, dust & mold.

Paper & fiberglass filters work on the premise of plugging up small holes with particles to prevent dust from getting on your HVAC unit. Every hole that gets plugged is one more hole that isn’t allowing airflow.

Castle Filters have 400% more surface area for dust & other particles to collect. Because the internal foam is treated with a sticky material, you don’t have to sacrifice stopping power for airflow.

Side view of a standard household HVAC pleated filter.

Side view of a standard household HVAC pleated filter.

Side view of a Castle Filter! More surface area & greater air flow means less hassle.

Side view of a Castle Filter! More surface area & greater air flow means less hassle.



Testing & Results

Test Results That Back Up Our Claims

See the science as to why Castle Filters are a better choice for your home, wallet & environment.

Download this Informative Product Comparison PDF
Castle Filters Filter Test
Castle Filters Filter Test
Castle Filters Filter Test
Castle Filters Filter Test
Castle Filters Were Tested by LMS Labs

All claims made are according to our scientific research performed by LMS Labs – a certified lab that does filter testing/certifications for the worlds largest retailers & manufacturers.