The Armstrong Furnace R43203-002 HSI Ignitor is a critical OEM replacement component engineered for precision ignition in Armstrong Air and Lennox family gas furnaces

Reduces motor start-up time

provided the model number matches the manufacturer’s specifications for this specific furnace circuit board

its 25% activated alumina blend provides the acid neutralizing capacity necessary during routine maintenance or after minor system contamination

Broad Refrigerant Compatibility: Suitable for use in standard high-pressure systems utilizing non-corrosive refrigerants

AERCO 124930 Maintenance Kit 326058-755 The Armstrong Furnace R43203-002 HSIThe AERCO 124930 Maintenance Kit is a comprehensive BMK Annual Maintenance Kit engineered specifically for high efficiency AERCO Benchmark boilers. As a genuine OEM maintenance kit, it includes the precision components required to maintain the AERCO 124930 specifications and ensure peak thermal performance. Regular use of this industrial boiler service kit prevents combustion instability and maximizes the AERCO BMK boiler service life. Designed for