While this is a native R-22 scroll compressor

OEM Compatibility: This genuine Carrier part ensures exact fitment and maintains peak system performance according to factory specifications

HVAC contractors specify the Watts 40XL-8-150 for its reliability in preventing thermal expansion failures and its ability to handle high-output boiler systems where lower-capacity valves would fail to meet safety codes for over-pressure protection

12 inches is required to ensure the switch accurately reads the internal plenum temperature

This single-speed PSC motor operates at 1075 RPM with a 208-230V power supply

York S1-001-07110-004 Key 340155-7024 While this is a nativeThe York S1 001 07110 004 Square Blower Key is a critical mechanical fastener designed to prevent rotational slippage between the blower motor shaft and the fan wheel. Measuring 1 4 inch by 6. 375 inches, this genuine OEM part ensures precise power transmission in high torque HVAC applications. Constructed from hardened steel, it is engineered to withstand the constant shear stresses of residential and light commercial air handlers, eliminating the