are heat pumps loud

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Not all heat pumps are noisy. How loud something is, is measured in decibels (dB). According to experts, 30 dB is considered very quiet.Your heat pump has valves that backflow the refrigerant between heating and cooling modes. Many pool owners notice that their heat pump gets louder during the winter. This is because the heat pump’s defrost mode is kicking in and causing the aforementioned valves to shift, causing a whooshing sound, according to Hannabery HVAC

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