DISCLAIMER: WE STRIVE TO PROVIDE ACCURATE PRODUCT IMAGES AND SPECIFICATIONS. MANUFACTURERS MAY UPDATE PRODUCT APPEARANCE, FEATURES, OR SPECIFICATIONS WITHOUT NOTICE. IF YOU HAVE ANY QUESTIONS ABOUT COMPATIBILITY, PLEASE CONTACT US—WE'RE HAPPY TO HELP ENSURE YOU ORDER THE CORRECT PRODUCT.
STA-RITE MAX-E-THERM SR400NA LOW NOX NATURAL GAS POOL & SPA HEATER – 400K BTU, COPPER HEAT EXCHANGER
Heating Capacity: 400,000 BTU
Thermal Efficiency: 84%
Fuel Type: Natural Gas
Weight: 138 lbs
Voltage: 120V / 240V / 60 Hz / 1 Phase
Ignition: Advanced Control Module
Automation: Pentair IntelliCenter Compatible
Emissions: Low NOx
The Sta-Rite SR400NA Max-E-Therm Natural Gas Pool & Spa Heater delivers 400,000 BTU at 84% thermal efficiency - the high-output size in the Max-E-Therm range.
Max-E-Therm is built around fast heat-up in a compact cabinet, and 400,000 BTU is what you specify when recovery time matters: large pools, pool and spa combinations, and installations where the owner will not wait hours for temperature.
An advanced ignition control module with flame strength sensor monitors combustion quality rather than simply confirming a flame is present, which catches degrading burner performance before it becomes a failure. A digital control with full-text display makes setup and diagnostics readable, and the unit connects to the Pentair IntelliCenter automation system.
Key Features
- 400,000 BTU heating capacity
- 84% thermal efficiency
- Natural Gas
- Advanced ignition control module with flame strength sensor
- Digital control with full-text display and menu-driven interface
- Pentair IntelliCenter automation compatible
- Fast heat-up for large pools and pool/spa combinations
- Compact 138 lb cabinet
- Low NOx emissions
- 120V / 240V single-phase
Specifications
| Specification | Details |
| Brand | Sta-Rite (Pentair) |
| Part Number | SR400NA |
| Series | Max-E-Therm 400 |
| Fuel Type | Natural Gas |
| BTU Input | 400,000 BTU |
| Thermal Efficiency | 84% |
| Weight | 138 lbs |
| Voltage | 120V / 240V |
| Phase | Single Phase |
| Frequency | 60 Hz |
| Ignition | Advanced Control Module with Flame Strength Sensor |
| Automation | Pentair IntelliCenter Compatible |
| Emissions | Low NOx |
What's Included
- Sta-Rite SR400NA Max-E-Therm Natural Gas Pool & Spa Heater
- Heat exchanger assembly
- Advanced ignition control module
- Digital control with full-text display
- Installation and operation documentation
The Sta-Rite SR400NA delivers 400,000 BTU at 84% efficiency with flame-strength ignition monitoring - the fast-recovery Max-E-Therm for large pools.
Learn more at Pentair:
https://www.pentair.com/en-us/pool-spa/products/heaters-heat-pumps/max-e-therm-heater.html
Choose options