Ruud is an energy-efficient and reliable brand of heating, cooling, and water heating systems. The company has been in business since the late 1800s and offers a wide range of products and services to keep your home comfortable year-round. All Ruud products are designed to meet or exceed industry standards for energy efficiency and performance. Ruud offers a variety of systems, including air conditioners, furnaces, heat pumps, and tankless water heaters. Additionally, Ruud offers a variety of accessories, such as thermostats, humidifiers, and air purifiers.