The GE Universal Fit 3-ton packaged gas/electric rooftop unit (catalog GC900, chassis ZGD036S5B) combines DX cooling with factory gas heat in one curb-mounted package. It is a typical choice when the job already has gas at the roof and the existing unit is gas/electric.

This configuration is 460V, 3-phase, with 065 MBH single-stage gas heat, Low NOx compliant, and includes a 1 HP blower (Z01 drive). Universal Fit footprint design supports common commercial curb replacements so crews can change out the unit with less curb rework when dimensions match.

Heavy-gauge cabinet construction, full-perimeter base rails, and accessible gas/heat and compressor sections support serviceability. Current Universal Fit packaged models use R-454B with a factory refrigerant detection system. Confirm Low NOx / Ultra-Low NOx requirements, LP conversion needs, and economizer/curb accessories against the heat digit and A-BOX cabinet before order.

Key features:

• 3-ton packaged gas/electric rooftop; chassis ZGD036S5B

• 460V, 3-phase

• 065 MBH single-stage gas heat, Low NOx compliant

• 1 HP blower (Z01 drive)

• R-454B refrigerant; factory RDS

• Scroll compressor cooling; gas heat section with accessible service compartment

• Shipped downflow; field-convertible to horizontal airflow where applicable

• Full-perimeter base rail for rigging and transport

• Match curb, economizer, and flue/gas accessories to A-BOX cabinet