By and large the Joule does exactly what it was promoted to do. I especially found it useful this Winter in my poorly ventilated kitchen when I could prepare foods like fish and steaks with little or no cooking smells. The results have been great. The reduced risk of overlooking is also a plus I do have some issues with the controls and instructions. They are too rigid and do not permit enough flexibility in adapting to different quantities and foods. A substantial price for an additional cookbook was, I thought, a rip-off. I nevertheless recommend this equipment.