For nearly 100 years, we at Rinnai have been fiercely committed to delivering nothing less than our absolute best. Through teamwork, technology and innovation, we’ve become one of the world’s largest gas appliance manufacturers, specializing in high-efficiency tankless water heaters and home heating solutions. With headquarters in Japan and a network of 20 branches and 86 sales offices in 13 countries, Rinnai’s presence and influence have a global impact.