Key Benefits for Technicians: Precise Compatibility: Designed as a direct fit for Bunn 27621

For obstructed paths or wall-mounting

the E3H2 is the direct replacement part for the 1309A0039

ensuring correct port alignment and electrical connection

HSIs utilize resistance heating and usually have two wires

AERCO Boiler and Water Heater 124363 Board 319847-401 Key Benefits for Technicians: PreciseThe AERCO Boiler and Water Heater 124363 Low Water Cutoff Board is a critical safety component engineered for high performance hydronic systems. As a genuine OEM replacement part, this LWCO controller ensures precise monitoring of fluid levels within the heat exchanger, preventing dry fire conditions that lead to catastrophic equipment failure. Specifically designed for integration with AERCO Boiler and Water Heater Benchmark boilers and Innovation