The XHFY2004 22WC Mr Heater Original Equipment Pressure Switch, rated at 0.22 of Water Column an was used for 45,000 and 75,000 BTU/HR garage and workshop Compact Unit Heaters using Natural Gas (NP) or Liquid Propane (LP) by Enerco.

The XHFY2004 Pressure Switch fits the following Mr. Heater Models:
MHU45LP
MHU 45LP
MHU45NP
MHU 45NP
MHU75LP
MHU 75LP
MHU75NP
MHU75NP

The XHFY2004 Pressure Switch fits the following Heatstar models:
HSU45LP
HSU45NP
HSU75LP
HSU75NP