Noritz is a company that specializes in the development of gas tankless water heaters. Based in California, Noritz focuses on the modern design, unique craftsmanship, and high-quality materials. Tankless gas/propane heaters is the only thing this company does, so they are dedicated to doing it in the best way possible, offering versatile solutions, extreme unit durability, and a high level customer service. The warranty of those heaters can reach to up to 12 years under conditions. Building both indoor and outdoor units, Noritz offers heating systems that boast up to 0.97 energy factors, and are able to be installed in 24-unit arrays.