Facade for Energy Recovery Ventilation (ERV) devices — exactly the generic device surface: the ERV ventilation-mode filtering refines behavior, not shape, so the published name exists for symmetry with the other device types.
Facade for Energy Recovery Ventilation (ERV) devices — exactly the generic device surface: the ERV ventilation-mode filtering refines behavior, not shape, so the published name exists for symmetry with the other device types.