ERV Return-Air Filter
Most ducted air handlers are equipped with an air-filter media in the return air plenum. Does the ERV return air need the same? I am planning to use Panasonic Intelibalance ERV. I know that outdoor air is passed thru a MERV 8~13 filter, and return air will meet the exchange core first before being expelled to outside. I am afraid that without a return air filter, the “energy” exchange core may get clogged much sooner!
Does anyone have any experience with a return air filter for ERV? I am using a dedicated 6″ ~4″ ducts for a trunk and branch system for 75 CFM supply. Any details on duct transition to return air plenum and back to ERV will be super helpful.
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