leading to a measurable drop in overall heating effectiveness

this part is a direct drop-in for ensuring furnace high limit protection across compatible 1LD

typically 10" W

and Lennox models

Aprilaire 5532 Membrane Switch 321894-708 leading to a measurable dropMaintain precise environmental control with the Aprilaire 5532 Membrane Switch, a genuine OEM replacement part specifically engineered for high performance Aprilaire humidifiers and air quality equipment. This essential HVAC control panel component restores full responsiveness to your system's interface, ensuring accurate adjustments for humidity levels and air purification settings. Designed to meet rigorous factory standards, the Aprilaire 5532