These are Quest remanufactured (refurbished) units, not new units. These Quest units were remanufactured directly at the Quest factory, and get a 3 year warranty directly from the Quest brand. Many of the issues tended to be minor or cosmetic. The Quest 876 is the largest capacity dehumidifier on the market thats specifically designed with growers in mind. Powered by patented coil technology that isnt available anywhere else, the Quest 876 is designed to work round-the-clock to optimize your grow environment with maximum energy efficiency and flexibility.