For indoor or outdoor installations on pools and spas. Features include an LCD 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.
- Lightweight – Lightest heater in its class
- Best-in-class – energy efficiency*
- Compact Design – Ideal for retro-fit installations
- Easy to Switch – Change gas sources with installation of separate orifice
- Environmentally Friendly – All units are low NOx
- Rustproof Housing – Sleek, matte black enclosure is made of Dura-Glas – an exclusive Sta-Rite material that handles the heat and weathers the elements
- Lower Operating Costs – 84% efficiency rating – rated 1st in its class for highest energy efficiency
- Custom or Retrofit – Direct-connects to Sta-Rite System 3® Mod Media Filter or easily fits other systems
- Certified for outdoor and indoor installations
- For Air Intake Kit order part number 475002
- Certified for outdoor and indoor installations
Note: The Max-E-Therm Heater is certified for low NOx emissions.
* Standard Copper Heat Exchanger 84% Efficient. Heavy Duty (HD) Cupro-Nickel Heat Exchanger 82% Efficient.
Pentair Max-E-Therm(R) SR400NA Digital High Performance Pool and Spa Heater; 400000 BTU, Natural Gas
Product Features
- Lightweight - lightest heater in its class
- Best in class energy efficiency
- Compact design - ideal for retro-fit installations
- Easy to switch - change gas sources with installation of separate orifice
- Environmentally friendly - all units are low NOx
- Rustproof housing - sleek, matte black enclosure is made of Dura-Glas® - an exclusive Sta-Rite® material that handles the heat and weathers the elements
- Lower operating costs - 84% efficiency rating - rated first in its class for highest energy efficiency
- Custom or retrofit - direct-connects to Sta-Rite® System:3® Mod Media filter or easily fits other systems
- Certified for outdoor and indoor installations
Product Specifications
| Brand | Pentair |
| BTUHInput | 400000 |
| CabinetDepth | 31.69 Inch |
| CabinetHeight | 30.03 Inch |
| CabinetWidth | 25.15 Inch |
| ControlType | Digital |
| FlowRate | 120 gpm |
| FrequencyRating | 60 Hz |
| GasType | Natural Gas |
| Item | Pool and Spa Heater |
| Phase | 1-Phase |
| StandardsApprovals | CSA Certified, Eco-Select |
| SubBrand | Max-E-Therm® |
| Type | High Performance |
| VoltageRating | 120/240 VAC |
| WaterConnection | 2 Inch |
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