Pentair SR400NA. Sta-Rite 400,000 BTU Natural Gas Heater.

Pool and Spa Heater You might be wondering what temperature you need to keep your pool at to continue enjoying it as the weather gets cooler. Efficiency has never felt this luxurious, easy automation -- seamlessly interface with Pentair automation solutions. Save money and energy with the Max-E-Therm High-Performance Heater. Already known as being dependable and efficient, Max-E-Therm now offers smart features and an optional energy-saving automatic bypass to help you ensure your pool is ready whenever you are.

• Smart connectivity via the Pentair IntelliCenter Control System enables the management of pool functions from across the yard or around the globe.
• Alerts pushed to a smart device to keep you updated on heater performance and real-time status.
• Digital connectivity with your pool’s automation system and an advanced ignition control module with flame strength sensor help to ensure optimal heater performance.
• The full-text digital display combines new functions and a user-friendly menu for easy operation and diagnostics.
• Optional Smart Heater Bypass valve control diverts water flow when the heater isn’t needed to help save up to 35% in yearly operational costs.