Armstrong Furnace R38999D019 Heat Exchanger R-410A also identified as the Series

also identified as the Series 740 high capacity water relief valve

System Compatibility: Direct integration with Maxitrol Series 21 systems and works in tandem with mixing tube sensors for accurate duct sensing

OEM Compatibility: Exact replacement for Aaon P59900

Built to withstand the high inrush currents typical of AC compressor startup

always verify the technical datasheet of your compressor model to ensure the trip curve matches

Armstrong Furnace R38999D019 Heat Exchanger R-410A also identified as the SeriesThe Armstrong Furnace R38999D019 Heat Exchanger is an essential OEM replacement part engineered specifically for high efficiency Armstrong Air and Allied Air heating systems. As a critical component for safe furnace operation, this HVAC heat exchanger is manufactured to precise factory dimensions, ensuring a perfect fit and seamless integration with your existing burners and blower assembly. By utilizing genuine Armstrong Air parts, technicians can