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Your cart is empty.About The Aprilaire 4010 Humidifier Transformer The Aprilaire 4010 Humidifier Transformer provides the ability to convert 110Volt to 24 Volt for installation. The leads connect to your 110 volt supply, and the screw terminals then provide the 24 volt output to the humidifier.
Russell Holmes
August 25, 2025
Transformer was perfect, fixed my humidifier perfectly .
Chris Tomkow
July 29, 2025
My humidifier water solenoid wouldn’t stay on. Kept clicking. New transformer did the trick
TheCritic
March 23, 2025
Replaced old, defective transformer with this gem. Now my humidifier attached to my furnace works as expected!
Samy Aboukhadrah
March 2, 2025
Get the job done perfectly!!
Mike
January 7, 2025
Screw terminals were striped and not usable when received
Jeff Pasternak
December 12, 2024
Did the job
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