The filtrete 1900 maximum allergen reduction filter is impressive at removing dust pollen and smoke from the air when the hvac system is running on its highest fan speed earning an.
Hvac attic filter.
On horizontal hvac units with the return duct attached to the side of the air handler the filter often fits in a slot on the return air intake side of the unit.
The filter is easy to grab in fact it may fall out of the vent if it isn t snug so be ready for that.
Attic hvac filters utilize 100 synthetic fibers and electrostatically charged pleated media which offers an extended surface area for higher dust holding capacity.
If your hvac system is in your attic the air filter may be in a vent in the ceiling.
This can change however depending on where your unit is installed.
Which direction does the filter need to be facing.
Build a custom filter ask us a question product catalog customize your air filter in 4 easy steps step 1.
In a traditional hvac system your air filter is usually installed between your hvac unit and your return duct.