Oxbox 5JAYHTR1A20BKA 20kW Electric Heater Kit with Built-In Circuit Breakers (R-454B Compatible)

Product Description

The Oxbox 5JAYHTR1A20BKA is a high-capacity 20kW electric heat kit designed to provide powerful supplemental or emergency backup heating for large-scale residential air handlers. Engineered for compatibility with the 2025/2026 generation of R-454B HVAC systems, this heater kit is essential for maintaining indoor comfort in larger homes during extreme cold snaps when heat pump efficiency may decline. With its specialized slide-in design, this unit integrates directly into the blower compartment of J5AH4 and J5AH5 air handlers, offering a robust and safe secondary heat source that can satisfy the heating demands of a 4 to 5-ton system.

• 20kW heating capacity providing approximately 68,242 BTU/h of supplemental heat
• Dual integrated 60-amp circuit breakers for maximum safety and electrical compliance
• Optimized for use with R-454B compliant J5 series air handlers
• Quick-connect wiring harness facilitates a faster and more secure field installation

Product Highlights

Safety and durability are prioritized in the 5JAYHTR1A20BKA design. It features high-grade nickel-chromium heating elements and automatic-reset thermal limit switches to ensure the unit does not overheat during extended run times. Because of its high power requirements, this 20kW model includes two built-in circuit breakers that function as local disconnects, simplifying the high-voltage wiring process and meeting most local building codes. Constructed with heavy-duty galvanized steel, this heater kit is built to handle the high-static airflow of large air handlers, providing years of reliable, maintenance-free backup warmth.

Product Information

Standard Information

• Brand: Oxbox (A Trane Brand)
• MPN: 5JAYHTR1A20BKA
• Series: 5JAYHTR Electric Heat

Technical Specifications

• Product Type: Electric Heater Kit
• Heating Capacity (kW): 20.0 kW
• Heating Capacity (BTU/h): 68,242 @ 240V / 51,182 @ 208V
• Voltage: 208/240V
• Phase: 1
• Hertz: 60
• Circuit Breakers: Included (2 x 60 Amp)
• Minimum Airflow Required: ~1400 - 1600 CFM (Refer to unit manual)
• Refrigerant Compatibility: R-454B / R-410A Systems
• Material: Galvanized Steel / Nickel-Chromium Elements
• Net Weight: 14.5 lbs
• Dimensions: 15.0" L x 8.5" W x 5.75" H