 It lasts up to 25 years. Oh, and did I mention it's delicious? Go to MyPatriotSupply.com and save $200 per kit. Includes fast and free shipping. That's MyPatriotSupply.com. Charles, dear. You know the ceiling fan you installed last week? Shouldn't the blade thingies go round and round? Oh, yeah. Maybe that's what the red wire was for.