✅ Option 1: Check Your Model Number (Most Accurate)

Locate the model number label:

• Behind the front cover or on the side of the unit

This applies to:

• GC42 (42” PTAC)
• GCDM (32” PTAC)

Electric Heat Only

Your model number contains: “E”

Examples:

• GC42P-E07KA2-2
• GC42P-E12KA2-2
• GCDM-E models

These units:

• Use electric heating only
• Do not have a heat pump
• Begin heating quickly after startup

Heat Pump (Hybrid Units)

Your model number contains: “H” or “HP”

Examples:

• GC42P-H07KA2-2
• GC42P-H12KA2-2
• GCDM-H models
• GCHP-09ANR1E2-C

These units:

• Use a heat pump for primary heating
• Have electric backup heat
• May delay before warm air starts

✅ Option 2: Observe Unit Behavior

If you cannot find the model number, use these signs:

Heat Pump (Hybrid)

• May blow cool air briefly when starting
• Takes a few minutes before warm air begins
• Performance may decrease in very cold outdoor temperatures
• May enter defrost mode (temporary cool air)

Electric Heat Only

• Produces heat almost immediately
• No defrost cycle
• Heating is consistent regardless of outdoor temperature

Still Not Sure?

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