These units allow for fresh air intake without losing heat or humidity. Perfect for grow rooms or small homes is the Panasonic FV-04VE1 WhisperComfortTM Spot ERV Ceiling Insert Ventilator with Balanced Ventilation and Patent-Pending Capillary Core
HRVs or air-to-air heat exchangers have been around since the 90's but are now just being installed in new homes or as retrofits in old ones. If a home is well insulated there needs to be fresh air intake. The average human breaths about 3-500 cubic feet of air per day (depending on size, gender, activity & lifestyle).
Here's some pics of the unit and accessories:
HRVs or air-to-air heat exchangers have been around since the 90's but are now just being installed in new homes or as retrofits in old ones. If a home is well insulated there needs to be fresh air intake. The average human breaths about 3-500 cubic feet of air per day (depending on size, gender, activity & lifestyle).
Here's some pics of the unit and accessories:
