GAF Master Flow Humidistat/Thermostat Control Kit, UL Approved

GAF Master Flow Humidistat/Thermostat Control Kit, UL Approved

Regular price $67.76

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Humidistat/Thermostat Control Kit

Fully adjustable humidistat/thermostat kit designed to regulate attic power ventilators, helping reduce damaging heat and moisture. Compatible with Master Flow and LL Building Products power vents and listed to UL standards.


Key Features:

  • Dual Control: Integrates humidity and temperature settings to optimize attic ventilation performance.
  • Wide Adjustability: User-adjustable humidity and temperature ranges to suit varying climate conditions.
  • UL Approved Safety: Listed accessory for dependable, code‑aligned operation.
  • Broad Compatibility: Works with Master Flow and LL Building Products power vents.
  • Compact, Ready-to-Wire Design: Simple panel with clear dials for quick setup and tuning.

Specifications Table:

Specification Details
Manufacturer/Brand GAF
Model/Manufacturer Number HT1
Product Number GAFHT1
Product Name Humidistat/Thermostat Kit
Application Controls attic power ventilators to reduce heat and moisture
Compatibility Master Flow and LL Building Products power vents
Adjustability User-adjustable humidity and temperature settings
Standards UL Approved (listed fan accessory)
Unit of Measure PC
Item Weight 0.9 lb
Category/Style Ventilation and Drainage

Frequently Asked Questions (FAQ):

Q: What does this kit control?
A: It monitors both humidity and temperature to automatically activate compatible attic power ventilators.


Q: Is it compatible with my existing fan?
A: It can be used with Master Flow and LL Building Products power vents; check your fan’s specifications for control input compatibility.


Q: Is it adjustable?
A: Yes, both humidity and temperature setpoints are user-adjustable via front dials.


Q: Is it safety listed?
A: Yes, it is UL approved as a listed fan accessory.


Q: Can I install it myself?
A: Basic electrical wiring is required; follow manufacturer instructions and disconnect power before servicing.


Quiet Climate Control for a Healthier Attic

This sleek control panel brings intention to your roofline—balancing temperature and humidity to protect finishes and furnishings below. I love the crisp, utilitarian face with intuitive dials—form serving function beautifully. Tuck it near your attic access and pair with a discreet power vent for a space that breathes effortlessly. It’s a smart, subtle luxury that elevates comfort and preserves your home’s integrity.


Protect your home from heat and moisture—add this adjustable GAF humidistat/thermostat kit to your attic fan today.

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