Resideo Q345A1321 Igniter-Burner THPU32HP7Y The Carrier HH18HA420 Auto Limit

The Carrier HH18HA420 Auto Limit Switch is a critical HVAC safety device designed to monitor internal furnace temperatures and protect the heat exchanger from thermal stress

As a genuine Mitsubishi Electric PCB

Easy Retrofit: Eliminates the labor-intensive process of running new 18/5 or 18/8 thermostat wire through finished structures

Built with a durable housing to protect sensitive internal components

Resideo Q345A1321 Igniter-Burner THPU32HP7Y The Carrier HH18HA420 Auto LimitOptimized for rapid response systems, the Resideo Q345A1321 Igniter Burner is a heavy duty combination pilot burner and ignitor designed specifically for natural gas intermittent pilot systems. This intermittent pilot ignition assembly features a non primary aerated design to ensure a stable flame pattern even in fluctuating environments. Featuring a BCR 18 0. 018" orifice and a single tip style with a right hand front tip direction, this unit is