The 4040 24 Volt Solenoid Valve controls the amount of water that enters your humidifier. This ensures that the right amount of humidity is delivered into the air every time it turns on. Usually installed by your contractor, the solenoid valve is part of the core of your humidifier, making it possible for you to adjust moisture levels with precision and accuracy.
Genuine Aprilaire humidifier replacement part
Ensures that the right amount of humidity is delivered into your home.
Controls how much moisture enters your humidifier, making it possible to maintain proper humidity levels throughout your home.
Compatible with Aprilaire humidifiers models 400, 500, 600 and 700.