Four-inch air filters offer enhanced particle capture and longer lifespan compared to standard options, improving system efficiency and air quality. Perfect for reducing allergens and dust in your home. Click here to switch to four-inch filters and protect your indoor environment.
The Best
Four-Inch
Furnace
HVAC Air
Conditioner
Filters
Explore the benefits and top-rated options for high-
efficiency four-inch furnace HVAC air filters to
improve indoor air quality and energy efficiency.
What are
Four-Inch
Furnace
HVAC Filters?
Four-inch furnace HVAC filters are high-
efficiency air filters designed to fit standard
four-inch filter slots in furnaces and air
conditioning units. They help remove a variety of
airborne contaminants, improving indoor air
quality.
Key Benefits of Four-Inch Filters
Easier maintenance with less
frequent filter replacements
Four-inch filters only need to be
replaced every 6-12 months, compared
to the more frequent replacements
required for one-inch filters, simplifying
HVAC maintenance.
Longer filter lifespan compared
to standard one-inch filters
The increased size and capacity of four-
inch filters allows them to last
significantly longer before needing
replacement, reducing maintenance
and replacement costs.
Improved air filtration and
indoor air quality
Four-inch furnace filters have a larger
surface area and more advanced
filtration media, capturing a wider range
of airborne contaminants and
improving overall indoor air purity.
Enhanced energy efficiency by
reducing HVAC system strain
The higher-performance filtration of
four-inch filters results in less airflow
restriction, allowing HVAC systems to
operate more efficiently and consume
less energy.
2024 Proprietary and Confidential. All Rights Reserved.
3
Top-Rated Four-Inch Furnace Filters
Filtrete 16x25x4 Ultimate
Allergen Furnace Filter
Honeywell FC100A1037
Pleated Air Filter
A high-performance filter from Filtrete
that captures up to 94% of airborne
particles, including allergens, dust, and
pet dander, to improve indoor air quality.
A pleated four-inch filter from Honeywell
that offers enhanced filtration efficiency
and longer lifespan compared to
standard one-inch filters.
Nordic Pure 16x25x4 MERV
12 Pleated AC Furnace
Filters
A MERV 12 rated pleated filter from Nordic
Pure that effectively traps a wide range of
airborne contaminants, including smoke,
dust, and pollen, while maintaining
optimal airflow.
2024 Proprietary and Confidential. All Rights Reserved.
4
https://filterbuy.com/four-inch-air-filters/
https://filterbuy.com/four-inch-air-filters/
Filter Replacement
Frequency
The frequency of filter replacement is an
important consideration for maintaining
the efficiency and air quality of your HVAC
system. Four-inch furnace filters typically
need to be replaced every 6-12 months,
depending on factors like the air quality in
your home, the MERV rating of the filter,
and the usage of your HVAC system.
Discover more
at https://filterbuy.com/four-inch-air-
filters/
Four-Inch
Furnace
HVAC Air
Conditioner
Filters
Explore the benefits and top-rated options for high-
efficiency four-inch furnace HVAC air filters to
improve indoor air quality and energy efficiency.
What are
Four-Inch
Furnace
HVAC Filters?
Four-inch furnace HVAC filters are high-
efficiency air filters designed to fit standard
four-inch filter slots in furnaces and air
conditioning units. They help remove a variety of
airborne contaminants, improving indoor air
quality.
Key Benefits of Four-Inch Filters
Easier maintenance with less
frequent filter replacements
Four-inch filters only need to be
replaced every 6-12 months, compared
to the more frequent replacements
required for one-inch filters, simplifying
HVAC maintenance.
Longer filter lifespan compared
to standard one-inch filters
The increased size and capacity of four-
inch filters allows them to last
significantly longer before needing
replacement, reducing maintenance
and replacement costs.
Improved air filtration and
indoor air quality
Four-inch furnace filters have a larger
surface area and more advanced
filtration media, capturing a wider range
of airborne contaminants and
improving overall indoor air purity.
Enhanced energy efficiency by
reducing HVAC system strain
The higher-performance filtration of
four-inch filters results in less airflow
restriction, allowing HVAC systems to
operate more efficiently and consume
less energy.
2024 Proprietary and Confidential. All Rights Reserved.
3
Top-Rated Four-Inch Furnace Filters
Filtrete 16x25x4 Ultimate
Allergen Furnace Filter
Honeywell FC100A1037
Pleated Air Filter
A high-performance filter from Filtrete
that captures up to 94% of airborne
particles, including allergens, dust, and
pet dander, to improve indoor air quality.
A pleated four-inch filter from Honeywell
that offers enhanced filtration efficiency
and longer lifespan compared to
standard one-inch filters.
Nordic Pure 16x25x4 MERV
12 Pleated AC Furnace
Filters
A MERV 12 rated pleated filter from Nordic
Pure that effectively traps a wide range of
airborne contaminants, including smoke,
dust, and pollen, while maintaining
optimal airflow.
2024 Proprietary and Confidential. All Rights Reserved.
4
https://filterbuy.com/four-inch-air-filters/
https://filterbuy.com/four-inch-air-filters/
Filter Replacement
Frequency
The frequency of filter replacement is an
important consideration for maintaining
the efficiency and air quality of your HVAC
system. Four-inch furnace filters typically
need to be replaced every 6-12 months,
depending on factors like the air quality in
your home, the MERV rating of the filter,
and the usage of your HVAC system.
Discover more
at https://filterbuy.com/four-inch-air-
filters/