The Rinnai Air Filter Assembly EX38C, part number 208000054, is a replacement air filter and housing assembly designed for use with certain Rinnai direct-vent wall furnaces and heaters. It traps dust, debris, and airborne particles from entering the heater’s internal airflow path to help maintain clean air circulation and protect internal blower and heat exchange components. This assembly is manufactured to the original equipment specifications to ensure correct fit and performance when installed in place of a worn or dirty air filter component.
This air filter assembly is intended for routine service or replacement when the filter element becomes visibly dirty, restricted, or no longer allows proper airflow through the heater’s intake system. A clean and properly installed filter helps maintain efficient air movement and can contribute to consistent heating performance while reducing strain on internal components. Installation should follow the model’s maintenance instructions to ensure the filter is oriented correctly and secured within the blower housing.
What’s Included: One (1) Rinnai air filter assembly for EX38C series direct-vent heaters.
Installation Limits: For replacement use only on compatible Rinnai direct-vent heaters; install with the heater powered off and confirm the filter housing is seated correctly to avoid airflow restrictions.
Compatibility: Compatible with Rinnai EX38C series direct-vent wall furnaces and similar models that use the 208000054 air filter assembly. :contentReference[oaicite:0]{index=0}
