This Williams 4915 panel is a direct replacement part for gravity top-vent models

and HS29 series

Robust Construction: Heavy-duty 3/4" x 3/4" NPT threads and die-cast housing provide structural integrity under high-pressure cycles

often caused by a dirty HVAC air filter

Is the oil pre-charged

Lennox 34K76 Motor Refrigerant This Williams 4915 panel isThe Lennox 34K76 is a professional grade PSC condenser fan motor engineered for direct drive applications in high static residential and light commercial HVAC systems. This 1 3 HP motor operates on a 208 230V single phase power supply and is rated for a nominal 825 RPM, providing the high torque performance required to maintain critical airflow across the coil. Featuring a multi speed design, this 3 speed blower motor allows for precise CFM