Crawl Space Humidistat Controller - Automatic Fan Control for Humidity Management

SKU: CSF-HUM

280 in stock

$89.00

Estimated standard delivery between January 06 and January 09. Order within . Upgrade for faster delivery at checkout.

  • Input Power: 110/120 Volts, 60 Hz
  • Humidity Range: 45% to 90% (adjustable)
  • Typical Setting: 50% (mold prevention threshold)
  • Control Function: Turns fan ON when humidity rises above setpoint
  • Interface: ON-OFF switch, adjustable range dial
  • Mounting: Dry location only (floor joist recommended)
  • Design: Compact, space-saving
  • Construction: Durable for long-term crawl space use
  • Application: Automatic fan control for humidity-based ventilation
  • Crawl space humidistat controller
  • Mounting hardware
  • Installation instructions
  • Wiring connections for fan control

We want you to be happy with your product!

Within 30 days of your order, we offer a 100% refund if a product was faulty, defective, or damaged in shipping and replacement is not feasible. While extremely rare, if we make a mistake we will also refund or replace the item.

New, unopened standard products may be returned within 30 days of delivery for a refund.

Restocking fees apply on opened boxes. Customer is responsible for return shipping costs for preferential returns.

Automatic Fan Control

Activates fans only when humidity exceeds your preset threshold (typically 50%)—eliminates manual operation and provides consistent mold prevention without guesswork.

Precision Monitoring

Real-time humidity sensing in your crawl space problem area triggers ventilation at the exact moment moisture control is needed—responsive protection before damage occurs.

Energy Efficient

Runs fans only when beneficial rather than continuously—dramatically reduces energy consumption while providing superior moisture control compared to 24/7 operation.

Simple Setup

User-friendly ON-OFF switch and adjustable dial (45-90%)—straightforward installation and operation without complex programming or smartphone apps required.

Crawl Space Humidistat Controller - Automatic Fan Control for Humidity Management

Automated Mold Prevention

This professional-grade humidistat automatically controls crawl space fans based on real-time humidity levels, turning ventilation on when moisture rises above your preset limit (typically 50%) and off when humidity returns to acceptable levels. The precision monitoring and energy-efficient operation eliminate the guesswork from moisture management—providing automated protection against mold growth, wood rot, and structural damage without requiring daily manual fan operation.

Compact Space-Saving Design

The small footprint installs easily in tight crawl space areas, mounting to floor joists without consuming valuable space. The durable construction withstands challenging crawl space environments for long-lasting reliable performance, while the compact design allows installation even in low-clearance areas where larger controllers won't fit.

Proactive Moisture Prevention

By maintaining humidity below 50%, the humidistat prevents conditions that support mold growth, wood rot, and structural deterioration. This proactive approach safeguards against harmful contaminants and damage before they occur, promoting a healthier living space and protecting your home's foundation investment. Automated operation provides consistent protection even when you're away or forget about crawl space conditions.