Our first Deni went dead after one use. Deni customer service (Keystone Manufacturing) was outstanding though. Since it was a large heavy item, all they required was for the power cord to be cut off and mailed back to them, at which point they sent out a brand new pressure cooker. Unfortunately, the 2nd one arrived with the plastic base pretty much shattered, although there was no damage evident on the box. No problem! Customer service sent another replacement out immediately with no questions. Unfortunately (again), the new unit died after only 2 or 3 uses (at least it lasted longer than the 1st one!). So while their customer service seems great, this particular pressure cooker seems to die pretty easily (at least at higher altitude of the Rocky Mountain region). The only reason I'm giving it 2 stars is due to the customer service.