
Carrier HL38MG029 Control Humidistat
The Carrier HL38MG029 Control Humidistat is a precision electromechanical humidity controller designed for seamless integration into residential and light commercial HVAC ventilation systems. This wall-mounted humidistat replacement utilizes a sensing element designed for high sensitivity to ambient moisture levels, providing reliable SPST switching to activate whole-home humidifiers or energy recovery ventilators (ERVs). Engineering specifications for the HL38MG029 ensure it operates effectively within a 20% to 80% relative humidity range, functioning as a primary control point to maintain indoor air quality and prevent structural issues related to improper moisture levels. For field technicians, this low voltage control offers straightforward 2-wire terminal connections, making it a standard Carrier OEM part for servicing TotalLine and Bryant systems. This unit is built for durability in high-cycle environments, ensuring consistent humidity regulation without the drift common in generic aftermarket alternatives.
Key Benefits:- System Compatibility: Engineered specifically for Carrier HL38MG029 specs, ensuring electrical and mechanical compatibility with existing wiring harnesses.
- Accurate Setpoint Control: Features a calibrated dial for precise adjustment, reducing short-cycling of HVAC humidification equipment.
- Industrial Build Quality: Utilizes heavy-duty internal contacts to handle inductive loads typical of humidifier solenoid valves.
- Efficient Installation: Standard footprint allows for rapid field replacement on most vertical or horizontal junction boxes.
Can this humidistat control a dehumidifier?
The HL38MG029 is designed to "make" circuit on a drop in humidity, typical for humidifier control. If used for dehumidification, a relay or a dedicated dehumidistat with "make" on rise logic would be required.
What is the voltage rating for this control?
This is an HVAC 24V control. Do not attempt to wire this directly to line voltage applications as it will result in immediate component failure.
Where should the sensor be located for optimal performance?
Install the control on an interior wall about five feet above the floor in an area with good air circulation to ensure accurate ambient humidity sensing.
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: $210.09
-65%$210.09
$73.53Carrier HL38MG029 Control Humidistat
The Carrier HL38MG029 Control Humidistat is a precision electromechanical humidity controller designed for seamless integration into residential and light commercial HVAC ventilation systems. This wall-mounted humidistat replacement utilizes a sensing element designed for high sensitivity to ambient moisture levels, providing reliable SPST switching to activate whole-home humidifiers or energy recovery ventilators (ERVs). Engineering specifications for the HL38MG029 ensure it operates effectively within a 20% to 80% relative humidity range, functioning as a primary control point to maintain indoor air quality and prevent structural issues related to improper moisture levels. For field technicians, this low voltage control offers straightforward 2-wire terminal connections, making it a standard Carrier OEM part for servicing TotalLine and Bryant systems. This unit is built for durability in high-cycle environments, ensuring consistent humidity regulation without the drift common in generic aftermarket alternatives.
Key Benefits:- System Compatibility: Engineered specifically for Carrier HL38MG029 specs, ensuring electrical and mechanical compatibility with existing wiring harnesses.
- Accurate Setpoint Control: Features a calibrated dial for precise adjustment, reducing short-cycling of HVAC humidification equipment.
- Industrial Build Quality: Utilizes heavy-duty internal contacts to handle inductive loads typical of humidifier solenoid valves.
- Efficient Installation: Standard footprint allows for rapid field replacement on most vertical or horizontal junction boxes.
Can this humidistat control a dehumidifier?
The HL38MG029 is designed to "make" circuit on a drop in humidity, typical for humidifier control. If used for dehumidification, a relay or a dedicated dehumidistat with "make" on rise logic would be required.
What is the voltage rating for this control?
This is an HVAC 24V control. Do not attempt to wire this directly to line voltage applications as it will result in immediate component failure.
Where should the sensor be located for optimal performance?
Install the control on an interior wall about five feet above the floor in an area with good air circulation to ensure accurate ambient humidity sensing.
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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Description
The Carrier HL38MG029 Control Humidistat is a precision electromechanical humidity controller designed for seamless integration into residential and light commercial HVAC ventilation systems. This wall-mounted humidistat replacement utilizes a sensing element designed for high sensitivity to ambient moisture levels, providing reliable SPST switching to activate whole-home humidifiers or energy recovery ventilators (ERVs). Engineering specifications for the HL38MG029 ensure it operates effectively within a 20% to 80% relative humidity range, functioning as a primary control point to maintain indoor air quality and prevent structural issues related to improper moisture levels. For field technicians, this low voltage control offers straightforward 2-wire terminal connections, making it a standard Carrier OEM part for servicing TotalLine and Bryant systems. This unit is built for durability in high-cycle environments, ensuring consistent humidity regulation without the drift common in generic aftermarket alternatives.
Key Benefits:- System Compatibility: Engineered specifically for Carrier HL38MG029 specs, ensuring electrical and mechanical compatibility with existing wiring harnesses.
- Accurate Setpoint Control: Features a calibrated dial for precise adjustment, reducing short-cycling of HVAC humidification equipment.
- Industrial Build Quality: Utilizes heavy-duty internal contacts to handle inductive loads typical of humidifier solenoid valves.
- Efficient Installation: Standard footprint allows for rapid field replacement on most vertical or horizontal junction boxes.
Can this humidistat control a dehumidifier?
The HL38MG029 is designed to "make" circuit on a drop in humidity, typical for humidifier control. If used for dehumidification, a relay or a dedicated dehumidistat with "make" on rise logic would be required.
What is the voltage rating for this control?
This is an HVAC 24V control. Do not attempt to wire this directly to line voltage applications as it will result in immediate component failure.
Where should the sensor be located for optimal performance?
Install the control on an interior wall about five feet above the floor in an area with good air circulation to ensure accurate ambient humidity sensing.
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.












