> It's just that the energy recovery equipment is expensive, bulky and needs to be maintained. ERVs can be had for US$ 500: * https://www.amazon.com/Panasonic

> It's just that the energy recovery equipment is expensive, bulky and needs to be maintained. ERVs can be had for US$ 500: * https://www.amazon.com/Panasonic-FV-04VE1-WhisperComfort-Ventilation-Patent-Pending/dp/B000XJNZ1Y/ https://www.amazon.com/Panasonic-FV-04VE1-WhisperComfort-Ven... * https://www.youtube.com/watch?v=-3CRGhu8C5I https://www.youtube.com/watch?v=-3CRGhu8C5I You can get some pretty small units as well: * https://www.youtube.com/watch?v=V-wCCJHIZAo&t=10m35s https://www.youtube.com/watch?v=V-wCCJHIZAo&t=10m35s * https://www.youtube.com/watch?v=LGB83pSLMiI https://www.youtube.com/watch?v=LGB83pSLMiI