Stainless steel patio heaters are corrosion resistant and durable. There is a variety of heaters made out of stainless steel, from free standing to tabletop, and overhead. There are different grades of stainless steel, the better one for the outdoor environment is 304 stainless steel. For beach front installations, look for marine-grade stainless steel. Currently, Calcana is the only brand that offers this option out of the box on their High-Output heaters.