Heavy Duty Humidifier Solenoid Replacement Water Valve A2012-S118 for Aprilaire Whole House Models 400, 400M, 500, 550, 558, 560, 600, 700, 768, 760A, 760 Replaces B2035-S2, B2035-S5, B2035-S54 24V 2.3W 60 Hz Easy Install DIY Friendly
✔️ Compatible with Aprilaire 400-760 models, 24V, easy DIY install
The PETOX 4040 humidifier water solenoid valve is a brass-bodied replacement part designed to regulate water flow in Aprilaire whole-house humidifiers. It’s compatible with models 400, 400M, 500, 550, 560, 558, 600, 700, 768, 760A, and more. This handy valve helps restore proper humidity control, improving comfort in dry indoor environments. Color: Yellow.
✅ 24V, 2.3W 60 Hz operation for standard home wiring
✅ Brass body with inline strainer, washers, and compression nut included
✅ Replaces A2012-S118 and multiple B2035-S2/S5/S54/S55 variants
✅ Easy screwdriver and wrench installation for quick DIY replacement
💡 What is a humidifier solenoid valve used for in a home HVAC system?
The valve is a handy, low-current switch that opens to deliver water to the humidifier when humidity needs rise.
- Maintains comfort by regulating moisture with humidity signals
- Responds to humidistat or controller inputs to prevent over-watering
- Simple DIY replacement minimizes downtime and hassle