The Flex Series is the ideal choice for apartments, condominiums and homes where space is limited and standard ventilation required. Designed with builders and contractors in mind, the Flex Series is all about installation flexibility and simplicity.

  • Compact design is perfect for installation in closet or above hot water tanks
  • Side port configuration
  • Pressure taps on access door enable installer to quickly read airflow
  • Optional ACCWMK wall bracket kit for ERV70, HRV80 and HRV90
  • ERV and HRV options across a wide CFM range (35-120 CFM)
  • At just 30 lb. (13.6 kg), it can be installed without opening the unit
  • Removable terminal block for quicker wall control connections
  • ENERGY STAR Qualified*

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HRV90S Flex Series