The ERV model isdesigned with slim shape, which is space-saving, easy-to-install and most suitable for a standalone room. The product adopts energy-saving brushless DC motor and high-efficiency two stage filters, effectively filtering smogs and PM2.5 that are harmful to human bodies, with purification efficiency rate up to 98%. The fresh air mode enables indoor/outdoor air exchange, while the air purification mode purifies the indoor air, just like an air purifier. Besides, the ERV can automatically monitor the indoor air quality (PM2.5, C02) and then switch modes smartly. The energy recovery core can adjust indoor heat and moisture, alleviating the loading of room air conditioner.