The Nasgas DEG-25 Deluxe is a hybrid water heating solution that gives you the the flexibility to use electric or gas heating depending on availability or cost. With a 25-gallon capacity, it is suitable for medium to large households. Its tank is constructed from dip galvanized prime heavy gauge steel for durability and corrosion resistance. The outer body is pre-painted with a UV-resistant finish to help resist external wear and maintain aesthetics over time. 

Inside, the geyser is insulated with Prime Kimmco insulation at a density of ~12 kg/m³ to reduce heat loss and improve efficiency. A QC-approved brass safety valve is included to ensure pressure regulation and safety. The burner is made of grey iron casted material, designed for thermal efficiency when running in gas mode. 

Because it supports both electric & gas modes, you can choose based on current utility availability or cost, making it more adaptable to varying electricity or fuel conditions. The unit also includes strong transmission piping (IIL GI), and the body-and-pipe combination is engineered to be robust and long-lasting. 

Overall, the Nasgas DEG-25 Deluxe is a solid choice when you want a large capacity water heater with safety, durability, and flexibility in fuel choice.