By regulating exhaust flow

This 6-pack is specifically engineered for HVAC leak detection and repair

This switch is rated for a 150# DWP (Differential Water Pressure) or 150 PSI

Weatherproof Protection: NEMA 4X rated coil housing allows for installations in wash-down or outdoor environments

Durable Construction: High-strength aluminum housing with a corrosion-resistant finish for extended service life in mechanical rooms

Carrier 37HS900005 Controller 322057-301 By regulating exhaust flowThe Carrier 37HS900005 is a high performance direct digital control (DDC) solution specifically engineered for Variable Air Volume (VAV) systems. As an OEM replacement part, this controller ensures seamless integration with existing Carrier terminal units, providing precise airflow regulation and pressure independent control. It operates on 24VAC power and features a rugged steel housing with a gray enamel finish, built to withstand the demanding