Reznor 123974 Fan Switch Els PW 17895 Can I use this on

Can I use this on an HFK series balanced port valve

While sized for up to 5 tons

Heavy-Duty Construction: Built with a 30 Amp 2 Pole configuration to withstand high inrush currents during compressor startup

this assembly features the gaskets required to create a secure seal between the metal box and the heat exchanger faceplate

Reznor 123974 Fan Switch Els PW 17895 Can I use this onThe Reznor 123974 Fan Switch is a precise thermal control engineered for gas fired unit heaters and duct furnaces. Designed to manage blower cycles based on internal heat exchanger temperatures, this F135 30F fan control ensures the fan engages when the plenum reaches 135F and terminates operation once it cools to 105F (30F differential). As a direct replacement for part 48706, it maintains the critical timing required to prevent heat exchanger stress