Derek ColeGM, Simmons One Hour Heating & Air · AI HVAC Answers

Defrost Cycle Explained: Why Your AC Makes Loud Noises #shorts

10 Dec 2025 · 0 min

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0:24

A brief YouTube short by Derek Cole explaining why heat pump/AC units make loud noises during their defrost cycle. The speaker says the system reverses refrigerant flow (switches temporarily to AC mode), activates electric heat strips to maintain indoor warmth, and that the audible loud noise comes from refrigerant/gas reversing direction through the system.

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Derek Cole

2025-12-10T10:04:37+00:00

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