the bearing races are likely pitted or dry

The balanced port construction is specifically built to handle systems with widely varying operating conditions

the Raypak 005899F is the correct OEM replacement part for the 105A Versa and many legacy RP2100 series units

it ensures consistent airflow and system static pressure management

verify your local code requirements and wiring configuration

Sporlan 450301-001 Filter 326070-701 the bearing races are likelyThe Sporlan 450301 001, also known as the BF084S, is a high performance bi flow liquid line filter drier specifically engineered for reversible cycle systems. Designed for heat pump applications, this 8 cubic inch unit features 1 2" ODF sweat connections and an internal check valve configuration that eliminates the need for external piping while ensuring precise refrigerant flow control in both heating and cooling modes. Unlike generic alternatives,