Pentair Max-E-Therm 400 Natural Gas Pool & Spa Heater 400K BTU SR400NA

Pentair Max-E-Therm® 400 Natural Gas Pool & Spa Heater 400K BTU SR400NA Designed for both indoor and outdoor installations on pools and spas, the Pentair Max-E-Therm® 400 offers a range of features for efficient and eco-friendly heating. With proven Dura-Glas rust-proof construction and heavy-duty design, this heater stands up to the harshest of applications. An Eco Select Choice: Max-E-Therm high-performance heaters offer best-in-class energy efficiency and are certified for low NOx emissions, making them eco-friendly favorites. Max-E-Therm Features: Lightweight: Lightest heater in its class. Compact Design: Ideal for retro-fit installation. Environmentally Friendly: All units are low NOx. Rustproof Housing: Sleek, matte black enclosure made of Dura-Glas. Lower Operating Costs: 84% efficiency rating. Custom or Retrofit: Easily fits other systems. Advanced Technology: Weather-proof frame, effortless controls, and environmentally conscience exhaust. LED Temperature Readout: