The First Company E149 Capacitor 5 MFD 370V is an OEM single-run capacitor designed for compatible HVAC equipment, including air handlers. It stores and releases electrical energy to maintain the phase shift required for efficient motor operation. This component supports consistent blower motor performance and reliable airflow throughout the heating and cooling system. https://www.partshnc.com/first-company-e149-capacitor-5-mfd-370v