Upgrade to the 20x25x4 MERV 11 air filter for advanced air filtration. It traps finer particles such as smoke, allergens, and smog, making it perfect for sensitive households. This pleated design also maintains proper airflow. Get cleaner, healthier air and HVAC efficiency—shop the best replacements now at Filterbuy.com.
Maximizing
Indoor Air
Quality with
Filterbuy
20x25x4 MERV
11 Pleated Air
Filters
Learn how to effectively replace and maintain Filterbuy
20x25x4 MERV 11 pleated air filters to improve indoor air
quality and HVAC efficiency in your home.
Maintaining Healthy Indoor Air
Install Correctly
Align the new filter with the airflow direction
arrow for optimal performance
Maintain Regularly
Inspect and clean the filter monthly to keep
your HVAC running efficiently
Ensure Proper Filter
Specifications
Verify your 20x25x4 MERV 11 pleated filter
meets your HVAC requirements
Prioritize Safety
Turn off HVAC system before replacing
filters to prevent electrical hazards
Locate Filter Compartment
The filter is usually behind a removable
panel on the indoor HVAC unit
2024 Proprietary and Confidential. All Rights Reserved.
2
Step-by-Step Filter Replacement
Verify Filter Specifications
Confirm you have the appropriate 20x25x4
MERV 11 air filter that meets your air handling
system's requirements.
Turn Off HVAC System
Switch off the HVAC system for safety before
starting the filter replacement process.
Locate Filter Compartment
Seek out the air filter compartment, usually
found on the indoor unit, hidden behind a
removable panel.
Remove Old Filter
Take off the panel and extract the old filter.
Note the airflow arrow direction on the
previous filter.
Install New Filter
Proceed to insert your fresh Filterbuy 20x25x4
MERV 11 pleated air filter, ensuring the airflow
arrow is pointing in the same direction as the
replaced filter.
Replace Panel
With the new filter correctly positioned, put
back the panel to complete the installation
process.
2024 Proprietary and Confidential. All Rights Reserved.
3
Ensuring Peak HVAC Performance
Install New Filter Properly
Align the airflow direction arrow on the new
filter to ensure optimal performance.
Maintain Filter Regularly
Inspect the filter monthly and replace it
every 3-6 months for maximum efficiency.
Check Filter Specifications
Ensure the 20x25x4 MERV 11 pleated filter
matches your HVAC system requirements.
Power Down HVAC System
Turn off the HVAC system before replacing
the air filter for safety.
Locate Filter Compartment
The air filter is usually behind a removable
panel on the indoor HVAC unit.
2024 Proprietary and Confidential. All Rights Reserved.
4
https://filterbuy.com/air-filters/20x25x4/merv-11/
https://filterbuy.com/air-filters/20x25x4/merv-11/
Understanding
MERV Ratings
Struggling with poor indoor air quality?
Upgrading to a high-performance Filterbuy
20x25x4 MERV 11 pleated air filter can
dramatically improve your home's air quality
and HVAC efficiency. These filters are designed
to effectively capture a wide range of airborne
pollutants, including dust, pollen, mold spores,
and pet dander, making them an excellent
choice for homes with allergy sufferers or pets.
Discover more at https://filterbuy.com/air-
filters/20x25x4/merv-11/
Filterbuy Air Filter Features
Advanced Filtration Media
Filterbuy uses a proprietary synthetic
electrostatic media that provides a
more effective trapping mechanism
for particles than low-cost cotton
media found in other filters.
Improved HVAC Efficiency
Properly installed Filterbuy 20x25x4 MERV 11 pleated air filters
can enhance the efficiency of your HVAC system and
improve your indoor air quality.
Ideal for Allergy Sufferers
MERV 11 filters are 95% effective against airborne particles
and are suitable for homes with allergy sufferers, filtering out
dust, pollen, mold, dander, and dust mites.
High Efficiency Filtration
Filterbuy 20x25x4 MERV 11 pleated air
filters are at least 20 times as efficient
in capturing dust, allergens, and
bacteria as standard fiberglass filters.
Robust Construction
These filters have a sturdy beverage
board frame that is resistant to
humidity and high temperatures up
to 200°F, preventing warping or
weakening.
2024 Proprietary and Confidential. All Rights Reserved.
6
Frequently Asked Questions
How long does a 20x25x4 air
filter last?
A 20x25x4 air filter lasts between 6 to 12
months, depending on factors like
indoor air quality, HVAC usage and
whether you have pets or live in a high-
pollen area.
Is MERV 11 too high for
residential?
MERV 11 is not too high for most
residential homes. It provides excellent
filtration for common allergens like dust,
pollen and pet dander, but may slightly
reduce airflow in some HVAC systems.
Does a MERV 11 filter restrict
airflow?
A MERV 11 filter can slightly restrict airflow,
but in most cases, it won't significantly
affect the efficiency of your HVAC. If your
unit is older or has low airflow already,
you might notice a drop in performance.
How often should MERV 11 filters
be changed?
MERV 11 filters should be changed every 3
to 6 months, depending on your home's
air quality, usage and whether you have
pets or allergies. Regular checks help
ensure the filter is still performing well.
2024 Proprietary and Confidential. All Rights Reserved.
7
Indoor Air
Quality with
Filterbuy
20x25x4 MERV
11 Pleated Air
Filters
Learn how to effectively replace and maintain Filterbuy
20x25x4 MERV 11 pleated air filters to improve indoor air
quality and HVAC efficiency in your home.
Maintaining Healthy Indoor Air
Install Correctly
Align the new filter with the airflow direction
arrow for optimal performance
Maintain Regularly
Inspect and clean the filter monthly to keep
your HVAC running efficiently
Ensure Proper Filter
Specifications
Verify your 20x25x4 MERV 11 pleated filter
meets your HVAC requirements
Prioritize Safety
Turn off HVAC system before replacing
filters to prevent electrical hazards
Locate Filter Compartment
The filter is usually behind a removable
panel on the indoor HVAC unit
2024 Proprietary and Confidential. All Rights Reserved.
2
Step-by-Step Filter Replacement
Verify Filter Specifications
Confirm you have the appropriate 20x25x4
MERV 11 air filter that meets your air handling
system's requirements.
Turn Off HVAC System
Switch off the HVAC system for safety before
starting the filter replacement process.
Locate Filter Compartment
Seek out the air filter compartment, usually
found on the indoor unit, hidden behind a
removable panel.
Remove Old Filter
Take off the panel and extract the old filter.
Note the airflow arrow direction on the
previous filter.
Install New Filter
Proceed to insert your fresh Filterbuy 20x25x4
MERV 11 pleated air filter, ensuring the airflow
arrow is pointing in the same direction as the
replaced filter.
Replace Panel
With the new filter correctly positioned, put
back the panel to complete the installation
process.
2024 Proprietary and Confidential. All Rights Reserved.
3
Ensuring Peak HVAC Performance
Install New Filter Properly
Align the airflow direction arrow on the new
filter to ensure optimal performance.
Maintain Filter Regularly
Inspect the filter monthly and replace it
every 3-6 months for maximum efficiency.
Check Filter Specifications
Ensure the 20x25x4 MERV 11 pleated filter
matches your HVAC system requirements.
Power Down HVAC System
Turn off the HVAC system before replacing
the air filter for safety.
Locate Filter Compartment
The air filter is usually behind a removable
panel on the indoor HVAC unit.
2024 Proprietary and Confidential. All Rights Reserved.
4
https://filterbuy.com/air-filters/20x25x4/merv-11/
https://filterbuy.com/air-filters/20x25x4/merv-11/
Understanding
MERV Ratings
Struggling with poor indoor air quality?
Upgrading to a high-performance Filterbuy
20x25x4 MERV 11 pleated air filter can
dramatically improve your home's air quality
and HVAC efficiency. These filters are designed
to effectively capture a wide range of airborne
pollutants, including dust, pollen, mold spores,
and pet dander, making them an excellent
choice for homes with allergy sufferers or pets.
Discover more at https://filterbuy.com/air-
filters/20x25x4/merv-11/
Filterbuy Air Filter Features
Advanced Filtration Media
Filterbuy uses a proprietary synthetic
electrostatic media that provides a
more effective trapping mechanism
for particles than low-cost cotton
media found in other filters.
Improved HVAC Efficiency
Properly installed Filterbuy 20x25x4 MERV 11 pleated air filters
can enhance the efficiency of your HVAC system and
improve your indoor air quality.
Ideal for Allergy Sufferers
MERV 11 filters are 95% effective against airborne particles
and are suitable for homes with allergy sufferers, filtering out
dust, pollen, mold, dander, and dust mites.
High Efficiency Filtration
Filterbuy 20x25x4 MERV 11 pleated air
filters are at least 20 times as efficient
in capturing dust, allergens, and
bacteria as standard fiberglass filters.
Robust Construction
These filters have a sturdy beverage
board frame that is resistant to
humidity and high temperatures up
to 200°F, preventing warping or
weakening.
2024 Proprietary and Confidential. All Rights Reserved.
6
Frequently Asked Questions
How long does a 20x25x4 air
filter last?
A 20x25x4 air filter lasts between 6 to 12
months, depending on factors like
indoor air quality, HVAC usage and
whether you have pets or live in a high-
pollen area.
Is MERV 11 too high for
residential?
MERV 11 is not too high for most
residential homes. It provides excellent
filtration for common allergens like dust,
pollen and pet dander, but may slightly
reduce airflow in some HVAC systems.
Does a MERV 11 filter restrict
airflow?
A MERV 11 filter can slightly restrict airflow,
but in most cases, it won't significantly
affect the efficiency of your HVAC. If your
unit is older or has low airflow already,
you might notice a drop in performance.
How often should MERV 11 filters
be changed?
MERV 11 filters should be changed every 3
to 6 months, depending on your home's
air quality, usage and whether you have
pets or allergies. Regular checks help
ensure the filter is still performing well.
2024 Proprietary and Confidential. All Rights Reserved.
7