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The Goodman 10135604 is a genuine OEM control relay engineered for the Goodman WGHP4636AAE heat pump air conditioner. This relay switches power to key components during the cooling and defrost cycles. A failed relay is a common cause of a unit that won't start, short-cycles, or won't switch between heating and cooling modes. Replacing it with the correct OEM part restores reliable, factory-spec operation.
This is the genuine OEM Goodman relay, built to the exact coil voltage, contact rating, and terminal layout the WGHP4636AAE was designed around. Generic substitutes may list similar ratings but can differ in mounting, contact life, and reliability under HVAC duty cycling. For a control component that determines whether the unit runs, OEM is the safe choice.
Moderate — typically a 20–30 minute job for an experienced technician. Disconnect power at the breaker before servicing, and photograph the wiring before removing the old relay so each terminal is reconnected exactly. If you are not comfortable working around live high-voltage components, we recommend a licensed HVAC professional.