Sta-Rite Max-E-Therm Heater, 333k, NG, IID, CuproNickel (SR333HD)

The SR333HD is for indoor or outdoor installations on pools and spas. Features of the SR333HD include an LED temperature readout with dual thermostat controls, temperature safety lockout, and 6-position control panel. PMG burner technology requires no outdoor draft hood. Proven Dura-Glas Resin provides rust-proof construction. Heavy-duty (HD) unit with cupro-nickel exchanger stands up to the harshest of applications, like low pH, high flow or heavy use. - **Rust-Proof Enclosure** - Unlike conventional metal enclosures, the Max-E-Therm is made of Dura-Glas® - a sleek, lightweight and rustproof material that withstands heat and the elements. - **Exact Temperature Controls** - Weatherproof temperature controls that can be set to your specifications.   Pivoting UV-resistant plastic visor covers the Digital Display.   Accommodates temperatures for both a pool and a spa running off of the same heater, in Fahrenheit (°F) or Celsius (°C). - **Energy Efficient** - PMG combustion technology improves Efficiency and reduces operating costs.  Also provides faster heat ups.  The three sizes available are 83% efficient or higher. - **Safety** - Internal safety feature sets maximum temperature levels.  Full diagnostic lights for troubleshooting problems.  The diagnostic indicator lights tell you whether to service the heater or the pump/filter system. - **Environment Friendly** - Exceeds all air pollution standards.  Electronic ignition enables you to never worry about a pilot light blowing out or leaking gas. - **Proven Sta-Rite Technology** - The Max-E-Therm Heater is the newest member in our family of advanced technology pool and spa products.  Our quality pumps and filters have been used for years to enhance the enjoyment of pools and spas nation wide.