1 Provide nice air high quality and solve air flow issues restricted to exotic rooms or small houses 2 Effectively eradicate condensation disorders in wintry weather 3 Prevent immoderate indoor humidity and mildew progress 4 Reduce the heat loss of the air conditioning formulation five Pay consideration to indoor brand new air supply and fresh air exhaust 6 Low noise, energy-saving and environmentally friendly 7 This product doesn't encompass installation amenities and requires self installation upon receiving the product