Trane HTR2978 Heater Rack

The Trane HTR2978 Heater Rack is a heavy-duty 4.8KW electric heat kit designed for seamless integration into high-performance HVAC air handlers and industrial furnace systems. Operating at 240V, this genuine OEM Trane heater rack provides critical supplemental or emergency heating for residential and light commercial applications. Constructed from high-grade rolled steel and aluminum, the assembly is engineered to withstand high thermal cycling and resist corrosion in demanding environments. For technicians performing a Trane electric heat kit installation, this rack features a modular design that mounts securely within the cabinet to ensure optimal airflow over the heating elements, preventing localized hotspots and premature component failure. This replacement heating element rack is essential for restoring full BTU output when existing internal elements fail or open due to high-limit trips. The HTR2978 is built to exact manufacturer specifications for electrical safety and efficient thermal exchange, making it the preferred choice for veteran contractors maintaining system integrity.

Key Benefits

• Precision Power Output: Delivers a consistent 4.8KW of supplemental heat at 240V to meet specific load requirements for conditioned spaces.
• Durable Construction: Built using rolled steel and aluminum for maximum structural rigidity and enhanced resistance to oxidative corrosion.
• Optimized Heat Transfer: Engineered with precise element spacing to maximize the temperature rise across the air handler coils.
• OEM Compatibility: Fits exact cabinet dimensions for Trane air handlers, eliminating the need for field modifications or bracket adjustments.
• Reliable Thermal Protection: Designed to work in tandem with system limit switches for safe, non-cyclic operation under high-load conditions.

Common Questions

Technicians often identify a failed HTR2978 when the system blower runs but the air remains at ambient temperature during a call for stage 2 heating. You should check for continuity across the elements and inspect the rack for signs of physical warping or broken coils.

While rated for 240V, this 4.8KW heater rack can operate on 208V systems; however, the actual wattage output will be reduced (approximately 3.6KW). Always verify your electrical service and nameplate data to ensure the reduced BTU output meets the building's heating load.

Increasing heater KW requires more than just a rack swap. You must verify that the existing wire gauge, circuit breaker size, and air handler CFM ratings can support the increased amperage and thermal load to avoid safety hazards.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.