DIY ERV Fresh Air Ventilator Heat Exchanger for House, Apartment, RV

Small heat exchangers that can bring fresh air into your house, apartment or RV are overpriced. They can be DIY'ed for far cheaper than what they are charging.

Examples of small fresh air ventilator heat exchangers

• http://www.purifresh.com/erv.html

• https://accuraseemechanical.com/mini/

• https://www.amazon.com/Panasonic-FV-04VE1-WhisperComfortTM-Ventilation-Patent-Pending/dp/B000XJNZ1Y/

• VENTS-US Twinfresh Expert RA1-50-2 Ductless Single Room Energy Recovery Ventilator for Fresh Air Intake, Stale Air Exhaust, and Heating/Cooling Recapture - https://www.amazon.com/VENTS-Twinfresh-Expert-1-50-2-VENTILATORS/dp/B09HDC3FW7?th=1

  • https://www.ebay.com/itm/225666483066

  • https://www.ebay.com/itm/165946274085

  • This style uses a ceramic core and cycles the direction of the fan every 70 seconds or so to recuperate the heat at about 90% efficiency.

  • It is absurdly expensive considering that the ceramic heat exchanger cores can be purchased for $30 - https://www.aliexpress.us/item/3256805773352155.html

  • You should really have 2 of these that are synchronized, otherwise, when it is blowing air in, the excess air pressure will blow air out of the cracks of the room/house. And when it's blowing out, the low air pressure will pull air in from the outside through cracks in the room/house.

Heat Exchanger Cores for DIY

• https://shop.prmfiltration.com/products/aluminum-heat-exchanger-core-12-x-12-x-4-inch-plate-and-fin-style?currency=USD&variant=32839552073791

• Counterflow recover heat exchanger - https://www.ebay.com/itm/225205502348

• Ceramic heat exchanger core - https://www.aliexpress.us/item/3256805773352155.html

  • Have to change airflow directions every 70 seconds.

To Be Continued...