Trane GDK090A3EMA 7.5 Ton 86,000 BTU Commercial Gas/Electric Packaged Unit | Medium Heat | 208/230V 3-Phase | Foundation Series | R-454B

Trane GDK090A3EMA — 7.5 Ton Commercial Gas/Electric Packaged Unit with Medium Heat, 208/230V 3-Phase The Trane GDK090A3EMA is the model-number answer for commercial contractors and facility managers who specify by part number. Behind the model designation is the same proven Foundation Series platform — 7.5 tons, 86,000 BTU cooling, medium-heat gas configuration, 208/230V 3-phase power — engineered for light commercial buildings, retail spaces, schools, restaurants, and office environments where reliable year-round climate control is a baseline requirement, not a luxury. Medium Heat Configuration — Right-Sized Heating for Moderate Climate Zones The GDK090A3EMA ships in medium heat configuration, making it the correct specification choice for commercial buildings in moderate to warm climate zones where heating loads are real but not extreme. Medium heat delivers sufficient gas heating output for shoulder-season and mild winter conditions without the fuel consumption overhead of a high-heat unit in an application that doesn't require it. For facilities teams managing operating budgets, right-sizing the heat configuration is as important as right-sizing the tonnage. 86,000 BTU Cooling — Proven 7.5-Ton Output At 86,000 BTU, the GDK090A3EMA covers the cooling loads typical of light commercial spaces in the 2,500–3,500 square foot range depending on building envelope, occupancy, and local climate. Single-stage operation delivers that output consistently and predictably, without the control complexity or service exposure of variable-capacity systems in straightforward commercial applications. 208/230V 3-Phase — Standard Commercial Electrical Compatibility The A3 designation in the model number confirms 208/230V 3-phase electrical configuration — the standard power supply for the majority of light commercial construction across the U.S. No step-up transformers, no special electrical modifications, no field voltage conversion required on a properly wired commercial installation. R-454B Refrigerant — Current and Compliant Like all current Foundation Series units, the GDK090A3EMA operates on R-454B — the low-GWP refrigerant replacing R-410A across the commercial HVAC market. For contractors and building owners, that means full compliance with current refrigerant regulations and zero exposure to the retrofit costs and supply disruptions that will accompany R-410A phase-down in coming years. All-In-One Rooftop Package — Built for Commercial Installation Gas heating and electric cooling factory-assembled in a single rooftop package means one unit, one roof curb, one set of electrical connections, and one service relationship for the complete HVAC system. For contractors, that simplifies the mechanical scope. For building owners, it simplifies long-term facility management. Why Contractors Specify the GDK090A3EMA Model-number verified: GDK090A3EMA is the exact Trane part number for this configuration 7.5-ton / 86,000 BTU output sized for light commercial applications Medium heat configuration right-sized for moderate climate zones 208/230V 3-phase compatibility with standard commercial electrical infrastructure R-454B refrigerant — fully compliant, no retrofit exposure Single-stage operation keeps commissioning and service straightforward All-in-one gas/electric rooftop package simplifies installation and facility management Trane Foundation Series reliability and full factory warranty Specifications at a Glance Spec Detail Model Number GDK090A3EMA Capacity 7.5 Ton / 86,000 BTU Heat Configuration Medium Heat Refrigerant R-454B Voltage 208/230V Phase 3-Phase Frequency 60 Hz Heating Gas Cooling Electric Stages Single Stage Series Foundation Series