Featuring a 22-inch diameter and a 21-degree pitch

which provides higher filtration efficiency and moisture removal capacity than many standard cores

or "flooding" (high suction pressure with low superheat)

Where is the System Sensor RA100Z primarily used

High-Temperature Internal Wiring reduces thermal stress

Lochinvar & A.O. Smith 100208404 Pressure Switch Refrigerant Featuring a 22-inch diameter andThe Lochinvar & A. O. Smith 100208404 Pressure Switch is a critical safety component designed for high efficiency water heaters and boilers. As a genuine OEM replacement part, it is functionally identical to the PRS2704, ensuring a precise fit and reliable performance for troubleshooting blocked flue or venting issues. This differential air pressure switch monitors the pressure across the combustion blower to verify proper airflow before allowing the