ESP UHS99 24V Replacement Universal Humidifier Solenoid Valve

This is the #1 humidifier solenoid replacement on the market. Directly replaces the Aprilaire 4040, and 100’s of other units with a fitting changeout. This universal humidifier solenoid replaces 99% of all humidifier solenoids out in the field including: Aprilaire #4040 General #990-53 Honeywell #32001639-002 Skuttle #A01-0814-148 Carrier #4357