GeneralAire GFX4 Humidistat
Best automated humidity control for homeowners and specialized climate-sensitive storage.
This controller takes the guesswork out of home climate management by linking your furnace blower directly to humidity levels. It trades the simplicity of a basic dial for a more precise, automated system that finally keeps your indoor air comfortable regardless of the outdoor temperature.
$139.99
at
Sylvane
Who it's for
- Homeowners living in climates prone to window condensation
- Users seeking even humidity distribution throughout their entire home
- DIYers who appreciate clear data and easy troubleshooting
Who should skip it
- Novices uncomfortable with complex HVAC wiring projects
- Budget-conscious shoppers looking for a basic, low-cost solution
- Users wanting a low-maintenance system without potential sensor issues
Performance breakdown
Automation Precision
Outdoor temperature compensation ensures humidity levels adjust intelligently to changing weather.
Installation Versatility
Flexible mounting options allow for seamless integration on walls or ducts.
Blower Integration
Direct blower control maximizes efficiency for consistent whole-home moisture distribution.
Calibration Accuracy
Field-calibratable settings offer professional-grade precision for specialized climate control needs.
Interface Usability
Backlit LCD display provides clear, readable data in low-light utility spaces.
Sensor Range
The 200-foot sensor lead accommodates almost any residential or commercial layout.
Key Specs
Voltage
18-30 VAC, 60 Hz
Switching load
1 amp maximum 30 volt
Dimensions
3.75 H x 3.5 W x 3.7 D inches
Weight
0.25 lbs
Material
PVC
Color
Yellow
Outdoor Sensor Length
200 feet / 61 meters
Accuracy
RH (77°F/25°C) 10%-90% +/-3%RH
Accuracy indoor temperature
+/- 2°F / -1°C
Control range
10% – 75%RH
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