This unit requires an electrical connection. Upon purchase, you agree that you will have the unit installed by a qualified technition or licensed electrician. Failure to do so may cause injury or death, not to mention damaging the unit. We do not accept this item for return in the event of failure upon installation. If you encounter a problem, you must contact the manufacturer for their support or warranty assistance. Please note, we do not sell used, repaired, rebuilt, or remanufactured goods. All items sold are new in the box.