Filter System for Heat Recovery Ventilators Filter System for Heat Recovery Ventilators Fresh air is the main reason people install controlled ventilation systems. But sometimes outdoor air isn't fresh enough.
Various filters can remove dust, pollen, odors and other airborne offenders.
Nutech Energy Systems, Inc. has overcome the pressure drop problem. For better filtering, one of the carbon filters can be replaced with an electronic air cleaner or a passive electrostatic filter. Pressure drop across the filter bank is low enough that even a low capacity HRV can deliver adequate air flow. Here are sample flows at 0.3 in. The Scrubber was designed for Nutech's Lifebreath line of HRVs.