This orifice is specifically calibrated for Liquid Propane (LP) gas applications and should not be used for Natural Gas systems due to the specific flow requirements of higher-density propane

The most common culprits are restricted airflow from a dirty air filter

or a shorted compressor winding that increases current draw

This PTAC control door cover is critical for protecting the internal PTAC control board from debris and unauthorized tampering while maintaining the aesthetic integrity of the chassis

Lennox 51M14 Flame Sensor This orifice is specifically calibratedThe Lennox 51M14 Flame Sensor is a critical safety component designed for precise rectification in Lennox G24, G24M, and G25 series furnaces as well as various Armstrong Air and Ducane HVAC units. This sensor, which is functionally identical to part number 51M1401, monitors the pilot or burner flame by converting heat into a microamp signal for the integrated furnace control board. When carbon buildup or oxidation occurs on the probe, the resistance