Generalaire 5951 Evaporative Humidifier 24V with Humidistat

Product Description

The GENERALAIRE 5951 is a 24-volt evaporative humidifier designed for forced-air heating systems in residential applications. The unit ships complete with the GFX4 Digital Automatic Humidistat, giving installers a ready-to-run package without sourcing a separate control. Evaporative humidifiers work by passing supply air across a water-saturated evaporator pad, adding moisture to the airstream before it reaches the living space. Licensed HVAC technicians install this type of humidifier as part of a ducted system, typically during new construction or as a comfort upgrade on existing equipment.

The 5951 is suited for residential ducted HVAC systems where whole-home humidity control is required. The included GFX4 humidistat provides digital automatic control, allowing the system to cycle on and off based on a set relative humidity target. This packaged configuration is appropriate for installation on the supply or return plenum of a gas, oil, or electric forced-air furnace. The 24-volt operating voltage integrates with standard low-voltage furnace control circuits.

Key Features

• 24-volt operation integrates directly with standard low-voltage furnace control wiring
• Evaporative pad design adds moisture to the airstream without a steam generator or separate humidifier cabinet
• Includes GFX4 Digital Automatic Humidistat for out-of-the-box humidity control
• Packaged bundle reduces sourcing time for installers
• Designed for whole-home humidity management in residential forced-air systems

Compatibility

Designed as an OEM-style whole-home evaporative humidifier for residential forced-air ducted heating systems operating on 24-volt low-voltage control circuits.

Installation Notes

Installation should be performed by a licensed HVAC technician. Power down the furnace and shut off the water supply before beginning any installation work. Low-voltage wiring connections must comply with applicable NEC requirements and the furnace manufacturer's wiring diagram. Follow the GFX4 humidistat instructions for control wiring and humidity set-point configuration before returning the system to service.

Technical Specifications

• Operating Voltage: 24 volts
• Humidifier Type: Evaporative
• Included Control: GFX4 Digital Automatic Humidistat
• UPC: 683786059518

Standard Information

• Brand: GENERALAIRE
• Manufacturer Part Number: 5951