Product Description
Aprilaire 4040 Humidifier Solenoid Valve (aka Lennox 52P90) Controls how much moisture enters your humidifier, making it possible to maintain proper humidity levels throughout your home.
This valve is for Aprilaire Humidifier Models: 400/440/550/558/568/560/600/700/760/768
This solenoid valve is also used in the following Lennox Humidifier series:
HCWB2-12, 12A, 17, 17A
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Most orders placed by 5 PM EST ship the same day, so you won’t have to wait for cleaner air. We stock the most common sizes and offer free shipping on orders over $50, making it simple to stay on schedule and keep your system running smoothly.
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