Key Benefits Universal Compatibility: Works across 24V

it serves as a direct drop-in for York furnace models

always verify the model number on the water heater rating plate before installation

it is often compatible with older Janitrol and newer Amana high-efficiency furnaces

Direct supercession of the 1NP0442

Laars Heating Systems R2028200 Flow Switch 326058-756 Key Benefits Universal Compatibility: WorksAs a veteran hydronic technician, you know that a failed flow switch can bring an entire commercial or residential system to a grinding halt. The Laars Heating Systems R2028200 Flow Switch is the primary replacement kit engineered to restore safety and functionality to your equipment. Specifically designed as a direct replacement for the obsolete 2400 542, this Laars boiler flow switch assembly ensures the burner doesn't fire without adequate water