Hi,,this is normal for any heater,,some are more audible than others ,,as metal parts heat up they expand,,and as they cool they contract,,what you hear is the metal expanding and contracting.Completely normal, no worries.
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Hi,,this is normal for any heater,,some are more audible than others ,,as metal parts heat up they expand,,and as they cool they contract,,what you hear is the metal expanding and contracting.
Completely normal, no worries.