diff --git a/src/device_library.h b/src/device_library.h
index 1a113e23a..3ef772b08 100644
--- a/src/device_library.h
+++ b/src/device_library.h
@@ -48,6 +48,7 @@
 {208, DeviceType::BOILER, "Logamax Plus/GB192/Condens GC9000/Greenstar ErP", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {210, DeviceType::BOILER, "Cascade MC400", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {211, DeviceType::BOILER, "EasyControl Adapter", DeviceFlags::EMS_DEVICE_FLAG_NONE},
+{219, DeviceType::BOILER, "Greenstar HIU", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 {234, DeviceType::BOILER, "Logamax Plus GB122/Condense 2300", DeviceFlags::EMS_DEVICE_FLAG_NONE},
 
 // Controllers - 0x09 / 0x10 / 0x50