this unit was installed this winter to help my wife who has copd and me who was getting cracked nose bleeds and dry skin, also static electric. this unit solved the problems with a 90% effectiveness. would recomend this unit for anyone who has the problem

Before purchasing this unit I had a standalone house humidifier - but that was a hassle and did not work well.I purchased the Aprilaire 400 specifically because it does not need a drain - and thus also uses less water! I bought this from discountfurnac