ERV for Bath Ventilation
Want to get an opinion on using an ERV as bath ventilation in lieu of dedicated bath fans in each bath. I am an Architect building a two story 2700 SF 4 BR / 3.5 bath residence with a fairly tight envelope. This is located in the Delaware Shore area. I expect to get 1 or better ACH/ 50pa on the blower door test. I am specifying a Panasonic intellibalance 100 ERV unit for whole house ventilation. The ERV will be ducted independently from the HVAC units. The ERV will have exhaust from each bath and kitchen and supplies to the bedrooms and Living areas. The unit has a boost feature to increase ventilation via remote switch locations. Trying to decide if I also need additional independent bath exhaust fans……I don’t like the idea of cutting additional holes in my building envelope for this but understand individual fans may perform better as far as reducing steam and odors compared to the ERV alone. My bath areas are relatively small 5′ x 6′ toilet / shower compartments except for one larger open bath of 6′ x 10′. Any opinions and shared experience with this situation is greatly appreciated.