Description
The Cleveland Controls AFS-442-388 is a Single-Pole Double-Throw (SPDT) air pressure switch engineered for dependable air flow proving and safety interlock applications in commercial and residential HVAC systems. Designed to monitor positive, negative, or differential air pressure, this switch helps ensure proper system operation by confirming adequate airflow before allowing equipment to run — protecting blowers, furnaces, and air handlers from unsafe operating conditions.
Key Features
- SPDT switching action provides both normally open (NO) and normally closed (NC) circuit configurations for maximum wiring flexibility
- Designed for air proving, fan proving, and safety interlock applications in HVAC equipment
- Compact, durable construction suitable for installation in tight equipment compartments
- Reliable pressure-sensing diaphragm for consistent, repeatable switching performance
- Cleveland Controls quality — a trusted name in HVAC pressure switch technology
Typical Applications
- Furnace and air handler induced draft fan proving
- Blower and fan operation verification
- Safety interlock circuits to prevent equipment operation without proper airflow
- Commercial and residential HVAC control systems
Why Choose Cleveland Controls?
Cleveland Controls has been a leading manufacturer of air pressure switches and environmental controls for HVAC applications for decades. The AFS series is widely specified by OEMs and service professionals for its consistent performance and long service life. The AFS-442-388 is a direct-fit replacement or new-installation solution for air proving requirements across a broad range of HVAC equipment.
Specifications
- Brand: Cleveland Controls
- Model / SKU: AFS-442-388
- Switch Type: SPDT (Single-Pole Double-Throw)
- Function: Air Pressure Switch
- Series: AFS
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