4" AC Filters - Furnace Filters

4" Koch Multi-Pleat XL8 Surface Pleated Filter for AC and Furnace - Merv 8

4" Glasfloss Replacement Merv 8 Koch Air Conditioning and Furnace Filters

4" Flanders Precisionaire Pre Pleat 40 - Air Conditioner and Furnace Filters Merv 8

4" Glasfloss Yellow Pleated Air Conditioning Filters - Merv 11

4" Glasfloss Activated Carbon Filters - Helps Reduce Unpleasant Odors - Merv 10

4" Glasfloss HWR - HVAC - Merv 10 - Honeywell F-100 - FC-40R

4" Glasfloss HWR - Merv 11 - Honeywell F-100 and FC-40R

4" air filters are not as common as 1" or 2" filters, but they are still available for specific HVAC systems. These filters are typically used in more significant commercial or industrial buildings, such as schools, hospitals, and office buildings. They are also used in larger residential HVAC systems, particularly in older or custom-built homes.

4" air filters are similar to 2" air filters in that they have a larger surface area, which allows them to trap more particles and last longer before needing to be replaced. They also come in different MERV ratings, which indicate their ability to capture particles of various sizes.

When choosing a 4" air filter, it's important to make sure that it is compatible with your HVAC system. Also, select the correct MERV rating for your specific needs. Some 4" filters may be more difficult to find, more expensive, and may require special order.

Have questions or need help deciding what filter is best? Call or text us at 954-588-7774; you can also drop us a note by using the below contact button.