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The HART COOLEY 150 12 wht is a 12-inch round ceiling diffuser designed for use in residential and light commercial HVAC air distribution systems. This diffuser mounts flush to the ceiling and disperses conditioned air in a wide radial pattern, promoting even airflow across the occupied space. Finished in white, it blends with standard ceiling surfaces. HVAC installers and sheet metal contractors use this diffuser as a supply-air termination point on ducted forced-air systems.
This diffuser is suited for residential forced-air systems and light commercial applications where a round ceiling outlet is required. It connects to round duct and is typically installed in living areas, offices, hallways, and similar occupied spaces requiring consistent, low-velocity air distribution at the ceiling plane. The 12-inch nominal size accommodates standard round duct takeoffs of the same diameter.
Designed as an OEM-style replacement or new-installation ceiling diffuser for 12-inch round duct systems in residential and light commercial forced-air HVAC applications.
Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Power down the air handling unit at the disconnect before working in the duct system. The diffuser connects to a round duct collar or boot and is secured to the ceiling surface per local mechanical code requirements. Ensure the duct collar is properly sealed to prevent conditioned-air bypass before finishing the installation.
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