Pentair ETi 400 High-Efficiency Pool Heater 461113 – 400K BTU Natural Gas with Titanium Heat Exchanger

The Pentair ETi 400 High-Efficiency Pool Heater (461113) delivers 400,000 BTU of powerful heating using advanced combustion technology and a titanium heat exchanger for exceptional corrosion resistance and long life. Designed to operate with natural gas, this high-performance heater brings fast warm-up times, consistent temperature control, and improved energy efficiency to residential or light commercial pool and spa systems.

Built for durability, the ETi 400 uses premium components and smart digital controls to ensure reliable heat distribution and simplified operation. Whether you’re extending the swim season, maintaining comfort in cool weather, or quickly warming spa water, this heater is engineered for superior performance and long-term satisfaction.

Pentair ETi 400 High-Efficiency Pool Heater (461113) Compatibility:

• Designed for natural gas pool and spa systems.

• Works with standard 2” plumbing connections.

• Integrates with Pentair automation platforms such as IntelliCenter®, EasyTouch®, and IntelliTouch®.

• Suitable for residential and light commercial pool & spa applications.

• Compatible with variable-speed pumps, sanitizers, and controllers for full system control.