RenewAire’s advanced ventilation products are suitable for all climates and are to be operated in both summer and winter. Some competitor’s products only recover heat from the exhaust air (HRV). This is great during winter in cold climates, but can over dry the home. During hot, humid summer days, HRVs must be turned off to avoid bringing in too much outdoor humidity. RenewAire’s Energy Recovery Ventilators work in summer, winter, hot, cold, humid or dry, moderating extremes year-round.