Aprilaire 4655 Humidifier Control
The Aprilaire 4655 Humidifier Control is a reliable, manual humidistat designed to provide precise low voltage 24V management for your central heating and cooling system. This essential HVAC humidity sensor utilizes a highly sensitive mechanical nylon ribbon filament that expands and contracts based on moisture levels, ensuring your whole house humidifier operates only when necessary. By manually adjusting the relative humidity (RH) setpoint—typically between 15% and 50%—homeowners can effectively prevent condensation on windows during extreme outdoor temperature drops. Whether you are performing a duct mount installation or a wall mount setup, the Aprilaire 4655 serves as a high-performance replacement for the legacy Model 4016. This 2-wire SPST switch is compatible with a wide range of units, including the Aprilaire 350, 400, 500, and 600 series, offering a straightforward solution for maintaining optimal indoor air quality and protecting your home from the effects of dry air.
Key Benefits:- Versatile Mounting: Includes hardware for both return duct and living space wall installations.
- Condensation Control: Allows for manual RH adjustment to protect windows and structural elements from moisture damage.
- Universal Compatibility: Works with most 24VAC humidification systems, including bypass and fan-powered models.
- Proven Reliability: Uses a mechanical sensing element for consistent performance without complex electronics.
- How do I prevent window condensation? You should manually lower the humidity setting on your Aprilaire 4655 as the outside temperature decreases to prevent water buildup on glass surfaces.
- Can I install this on the supply duct? No, this manual humidifier control must be installed on the return duct or a wall to avoid damage from high supply air temperatures.
- What does the 8% differential mean? This is the operational differential, meaning the controller will activate or deactivate the system within an 8% range of your chosen relative humidity setpoint.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $55.22
-65%$55.22
$19.33Aprilaire 4655 Humidifier Control
The Aprilaire 4655 Humidifier Control is a reliable, manual humidistat designed to provide precise low voltage 24V management for your central heating and cooling system. This essential HVAC humidity sensor utilizes a highly sensitive mechanical nylon ribbon filament that expands and contracts based on moisture levels, ensuring your whole house humidifier operates only when necessary. By manually adjusting the relative humidity (RH) setpoint—typically between 15% and 50%—homeowners can effectively prevent condensation on windows during extreme outdoor temperature drops. Whether you are performing a duct mount installation or a wall mount setup, the Aprilaire 4655 serves as a high-performance replacement for the legacy Model 4016. This 2-wire SPST switch is compatible with a wide range of units, including the Aprilaire 350, 400, 500, and 600 series, offering a straightforward solution for maintaining optimal indoor air quality and protecting your home from the effects of dry air.
Key Benefits:- Versatile Mounting: Includes hardware for both return duct and living space wall installations.
- Condensation Control: Allows for manual RH adjustment to protect windows and structural elements from moisture damage.
- Universal Compatibility: Works with most 24VAC humidification systems, including bypass and fan-powered models.
- Proven Reliability: Uses a mechanical sensing element for consistent performance without complex electronics.
- How do I prevent window condensation? You should manually lower the humidity setting on your Aprilaire 4655 as the outside temperature decreases to prevent water buildup on glass surfaces.
- Can I install this on the supply duct? No, this manual humidifier control must be installed on the return duct or a wall to avoid damage from high supply air temperatures.
- What does the 8% differential mean? This is the operational differential, meaning the controller will activate or deactivate the system within an 8% range of your chosen relative humidity setpoint.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Product Information
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Description
The Aprilaire 4655 Humidifier Control is a reliable, manual humidistat designed to provide precise low voltage 24V management for your central heating and cooling system. This essential HVAC humidity sensor utilizes a highly sensitive mechanical nylon ribbon filament that expands and contracts based on moisture levels, ensuring your whole house humidifier operates only when necessary. By manually adjusting the relative humidity (RH) setpoint—typically between 15% and 50%—homeowners can effectively prevent condensation on windows during extreme outdoor temperature drops. Whether you are performing a duct mount installation or a wall mount setup, the Aprilaire 4655 serves as a high-performance replacement for the legacy Model 4016. This 2-wire SPST switch is compatible with a wide range of units, including the Aprilaire 350, 400, 500, and 600 series, offering a straightforward solution for maintaining optimal indoor air quality and protecting your home from the effects of dry air.
Key Benefits:- Versatile Mounting: Includes hardware for both return duct and living space wall installations.
- Condensation Control: Allows for manual RH adjustment to protect windows and structural elements from moisture damage.
- Universal Compatibility: Works with most 24VAC humidification systems, including bypass and fan-powered models.
- Proven Reliability: Uses a mechanical sensing element for consistent performance without complex electronics.
- How do I prevent window condensation? You should manually lower the humidity setting on your Aprilaire 4655 as the outside temperature decreases to prevent water buildup on glass surfaces.
- Can I install this on the supply duct? No, this manual humidifier control must be installed on the return duct or a wall to avoid damage from high supply air temperatures.
- What does the 8% differential mean? This is the operational differential, meaning the controller will activate or deactivate the system within an 8% range of your chosen relative humidity setpoint.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
