For contractors performing Armstrong furnace troubleshooting

Constructing your combustion system with authentic Modine unit heater parts ensures long-term reliability and maintains the factory-specified performance levels required for demanding commercial and industrial heating applications

OEM Compatibility: Direct fit for York

What type of refrigerant oil is this drier compatible with

Allanson 421-557 Transformer Els PW 17895 For contractors performing Armstrong furnaceThe Allanson 421 557 is a heavy duty oil burner ignition transformer engineered specifically for Arco and American Standard burners. This iron core transformer utilizes a 120V primary supply to deliver a consistent 10,000V secondary output at 23mA, ensuring a powerful arc for reliable burner ignition in demanding environments. Designed with a mid point ground configuration, the 421 557 features a high silicon steel core and large gauge copper windings