We stand by our merchandise. All Ooni items include a 1-yr guarantee as regular, and we’ll lengthen that to the 5-year warranty on our Ooni Fyra, Ooni Karu and Ooni Koda outdoor oven ranges whenever you sign-up your pizza oven with Ooni.Ash buildup and debris can obstruct airflow, impacting combustion performance and perhaps leading to hazardous