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A comment on The humble water heater could be the savior of our energy infrastructure woes. Parent comment

Re:The humble water heater could be the savior of our energy... by brtkdotse on Wednesday July 07, 2021 @03:45AM (#27758466)
Usually heat exchanger ventilations. Fresh air comes in and exchanges heat with used air coming out, so you get fresh air but with the indoor temperature.
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Re:The humble water heater could be the savior of our energy... by BizarroLand on Wednesday July 07, 2021 @12:54PM (#27763234)
HRV (Heat Recovery Ventilator) systems are really cool, too. They solve the ages old problem of bringing fresh air into a home without losing all of the temperature and humidity from the internal environment.
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