OXBOX BY TRANE ELECTRIC HEAT KIT, PACKAGE UNIT, 15 KW, R454B

Model / Part Number (example for 15 kW electric heat kit): 5JAYHTR1A15BKA for the “Air Handler R‑454B Electric Heat Kit – 15 kW.”

The product is described as an electric‐resistance heating accessory designed for indoor air handler or package units compatible with the refrigerant R‑454B (a mildly flammable A2L refrigerant).

For “package unit” application, while I did not find a perfect verified listing of “Package Unit – 15 kW Electric Heat Kit, R‑454B”, the air‑handler variant exists and the brand’s R‑454B line supports electric heater kits at 15 kW.

Purpose: Provide supplemental (or primary) electric heating capacity inside the HVAC system when the main cooling/heat‐pump or gas heating component either doesn’t suffice or is supplemented.

Compatibility: Designed for systems using R‑454B refrigerant, and the documentation for the R‑454B line highlights safety and compliance for A2L refrigerants (flammable refrigerant class) in installation.