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Message: <blockquote data-quote="XL1000" data-source="post: 1117868" data-attributes="member: 14393">So there is a small issue I have with my Solar Geyser conversion. My geyser is in a roof cavity of our Cape Dutch and there is a small DC water pump that is activated by the Geyserwise unit to circulate the hot water in the collectors to the geyser when a predefined temperature is reached. This little DC fan seems to create a resonant frequency that buzzes throughout the house. It's particularly irritating in my sound room and main bedroom.I have tried to dampen the noise from the pump but am unable to as it sends the vibrations down the length of the copper pipes in areas of the roof I cannot freely access.Do you know if there are other makes of these pumps that can be used that run quietly?</blockquote>