Aprilaire 5529 Transformer 318973-401 rotating it modifies the cut-in

rotating it modifies the cut-in and cut-out points to prevent frequent equipment cycling

Its NEMA 1 enclosure and easy-to-read scale plate make it a straightforward HVAC pressure switch replacement for contractors looking for a universal mounting solution with 1/4" SAE male flare connections

This genuine OEM Nordyne replacement part utilizes Copeland Comfort Alert technology to detect electrical and system malfunctions before they lead to catastrophic compressor failure

rooftop systems

This valve is typically factory-set

Aprilaire 5529 Transformer 318973-401 rotating it modifies the cut-inThe Aprilaire 5529 Transformer is a genuine OEM replacement component designed specifically for the Aprilaire Model 800 Steam Humidifier and Aprilaire 865 systems. This 40VA transformer is the essential power source for units featuring a fill valve inlet that extends from the bottom of the housing. By converting line voltage to a consistent 24V AC, it ensures that your whole home humidifier maintains peak electrical performance and system protection.