Rinnai 109000749 Bypass Filter Set for Sensei Crossover Mode Recirculation

The Rinnai 109000749 Bypass Filter Set is a genuine OEM replacement part designed specifically for Rinnai Sensei series tankless water heaters operating in crossover mode. This filter set is an essential component for crossover-style recirculation systems, enabling hot water to circulate through the cold water line back to the heater without the need for a dedicated return line.

In crossover mode, the bypass filter set helps maintain proper water flow and filtration within the recirculation loop, protecting internal components and supporting optimal system performance. This part is also required when enabling smart or Wi-Fi-controlled hot water recirculation on compatible Sensei models.

Key Features:

• Genuine Rinnai OEM replacement part — ensures proper fit and preserves warranty compliance
• Designed exclusively for Rinnai Sensei series tankless water heaters
• Required for crossover-mode recirculation installations (no dedicated return line needed)
• Supports smart recirculation and Wi-Fi-controlled hot water loop configurations
• Maintains filtration integrity within the crossover recirculation circuit
• UPC: 400018124291

Keep your Rinnai Sensei recirculation system running as intended with this factory-spec bypass filter set. Always verify your model number before ordering to ensure compatibility.