Tiger Plumbing, Heating, Air Conditioning and Electrical Services recently installed a dehumidifier system under my house for me. They have done a lot of work for me in the past . They installed our air handler for us and the air conditioner. They have installed a hot water tank for us. They always seem to do good work, but I would have been happier this time if they had included a manual or something to explain to me how the system is supposed to work.