Choosing the right solenoid valve is essential for consistent humidity in homes using Aprilaire and similar whole-house humidifiers. The following selections focus on 4040-series solenoids that regulate water flow to maintain comfortable indoor moisture levels. Each option emphasizes durability, compatibility, and ease of installation to help you compare quickly.
Summary of selected products:
- AMI PARTS 4040 Humidifier Solenoid Valve Replacement Part (24V Brass) — Replaces many Aprilaire models
- AprilAire 4040 Solenoid Valve, 24 Volt — Genuine replacement with install hardware
- PETOX 4040 Humidifier Solenoid Replacement Water Valve — Brass construction, complete package
- TOMOON Humidifier Water Solenoid Valve 4040 — Yellow, 24V, 2.3W
- Pokin 4040 Humidifier Solenoid Valve — Brass body, stainless seat, compatible with many models
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- AMI PARTS 4040 Humidifier Solenoid Valve Replacement Part
- AprilAire 4040 Solenoid Valve, 24 Volt
- PETOX 4040 Humidifier Solenoid Valve Replacement Water Valve
- TOMOON Humidifier Water Solenoid Valve 4040 (Yellow)
- Honeywell 32001639-002 Solenoid Valve Kit
- Pokin 4040 Humidifier Solenoid Valve
- Buying Guide: Key Considerations For Selecting A Humidifier Solenoid Valve
AMI PARTS 4040 Humidifier Solenoid Valve Replacement Part
This 4040 solenoid valve controls water flow to the humidifier to ensure proper humidity is delivered, creating a more comfortable living environment. Specifications include 24 volts, 50/60 Hz, and 2.3 watts. It replaces numerous model numbers and is designed for durability and stable operation. The part is tested by the manufacturer and is compatible with Aprilaire models in the 400, 500, 600, and 700 series. A premium replacement option, it emphasizes reliability and long-term performance.
AprilAire 4040 Solenoid Valve, 24 Volt
This genuine AprilAire 4040 solenoid valve includes in-line strainer, compression sleeve, and compression nut for installation. It is designed to optimize performance for whole-house humidifiers and controls the water that enters the system, ensuring the correct humidity output. Compatibility covers multiple models in the Aprilaire lineup, making it a straightforward replacement for homeowners seeking OEM assurance.
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PETOX 4040 Humidifier Solenoid Valve Replacement Water Valve
PETOX offers a wide compatibility range for Aprilaire humidifiers with a brass body and stainless steel seat. The package includes compression nuts and an inline strainer, with 24V and 2.3W specifications. The valve is designed for high durability and stability, with emphasis on precise water flow control to maintain indoor humidity within target levels. It replaces several common part numbers for easy cross-reference.
TOMOON Humidifier Water Solenoid Valve 4040 (Yellow)
The TOMOON 4040 valve maintains an optimal humidity range of 35%–45% by precisely controlling water flow. It includes a 24-volt, 2.3-watt, 60 Hz motor and is compatible with a broad set of Aprilaire models such as 220, 224, 400, 400M, 500, 550, 560, 600, 700, 768, 760 and more. The package typically includes essential hardware for installation and is designed to provide durable performance in HVAC systems.
Honeywell 32001639-002 Solenoid Valve Kit
Designed for HE220 through HE265 humidifiers, this Honeywell solenoid valve kit includes the valve assembly, water feed tube, and nozzle. It is suitable for conventional and heat pump systems, providing a solid replacement option for maintaining appropriate humidity. The kit focuses on ease of installation and compatibility with Honeywell humidification units, offering a reliable alternative to OEM components.
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Pokin 4040 Humidifier Solenoid Valve
Pokin’s 4040 valve is designed for Aprilaire humidifiers in models 400–700 series, including 220/224. It uses a brass body with a stainless-steel seat to balance durability and corrosion resistance. The replacement aligns with common part numbers (B2015-S85, B2017-S85) and operates at 24V / 2.3W / 60 Hz. The valve is marketed as a non-OEM replacement that meets OEM standards and aims to fix issues related to water flow and shut-off reliability.
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Buying Guide: Key Considerations For Selecting A Humidifier Solenoid Valve
- Compatibility: Verify the valve’s model list to ensure it matches your humidifier (Aprilaire 400/400M/500/600/700 series, etc.).
- Electrical Specifications: Most 4040 valves operate at 24V, 60 Hz, around 2.3W. Confirm compatibility with your control board and wiring.
- Material Durability: Brass bodies with stainless seats offer corrosion resistance and longer service life, especially in humid environments.
- Included Accessories: Some replacements include inline strainers, compression sleeves, nuts, and washers—these reduce additional parts shopping time.
- OEM vs. Non-OEM: OEM parts (like AprilAire) provide guaranteed compatibility but may be pricier; high-quality non-OEM options can offer comparable performance.
- Installation Ease: Look for kits with clear installation hardware and documented compatibility to simplify replacement.
- Warranty and Testing: Reputable brands often test replacements for durability; warranty coverage can be a deciding factor for long-term reliability.
- Maintenance Impact: A reliable solenoid valve helps maintain consistent humidity, reducing maintenance calls and potential water damage from leaks or over-humidification.
- Holistic System Fit: Consider how the valve integrates with sensors, humidistat settings, and overall HVAC airflow for balanced moisture control.