Common Questions Is the Carrier 318172-701 compatible with both LP and Natural Gas

Its CCW (Counter-Clockwise) Lead End Rotation is critical for ensuring the blower assembly maintains proper static pressure and airflow delivery throughout the ductwork

you know that consistent negative pressure in the burner chamber is non-negotiable for safety

This model is the direct replacement for 43-25133-05

Precise Thermal Sensing: 3-inch probe provides accurate temperature detection within the airstream for immediate fan activation

Lochinvar & A.O. Smith 100281571 Thermopile Assembly 328140-751 Common Questions Is the CarrierWhen you're dealing with a pilot that won't stay lit or a gas valve that refuses to engage on a Lochinvar or A. O. Smith unit, the 100281571 Thermopile Assembly is the critical millivolt replacement part you need. This OEM thermopile is engineered to convert thermal energy from the pilot flame into a precise electrical signal, typically around 750 millivolts, to power the electromagnetic coil within the gas control valve. It is a vital component for