Feb 12, 2016 · The heat exchanger intended to freshen air is essentially a de-tuned heater that attempts to temper-heat the incoming air without wasting-using more heat than necessary to do so, in other words ideally youd want the indoor air at the exhaust to outside equalling or lower than the temperature of the outdoor air thats been heated.
Apr 12, 2012 · Energy Recovery Ventilation (ERV) is the process of exchanging the energy contained in normally fan extracted stale or humid air from homes and using it to treat (precondition) the incoming outdoor fresh air in residential and commercial HVAC systems. During warmer days, an ERV system pre-cools and dehumidifies while in the winter season ERV systems humidify and pre-heat incoming air from outside the house.
Fantech VHR 70R ES Fresh Air Appliance Heat Recovery Ventilator (HRV) 4.0 out of 5 stars 2. $770.19 $ 770. 19. Low Noise EC Motor Ventilation Fan for Heating Cooling Booster, Grow Tents, Hydroponics(8 Inch) 4.3 out of 5 stars 21. air exchanger hrv air exchanger
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