I have purchased 4 of these in 3 years...I live in the Pacific NW -- cold, damp in winter...This seat warmer is GREAT when it works....Each of mine have died within 3 months. I called the company on the last 2 and they did replace them, but one of the replacements has already died (2 mos). I do a 6 mile commute daily....I'm the only one that owns the car....basic use. The company warns to unplug seatpad before starting the car -- burst of electricity can blow the fuse -- but still, they seem to die. That said, they are cheap to buy and if they get me thru each winter with warm buns and not shivering to death in my 6-mile commute before the car heats up....it's worth it. Part of my winter expenses.... Good luck.