The Pentair ETi 400 High-Efficiency Pool Heater is built to keep your pool equipment running the way it should.

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 trustworthy 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.

Add it to your cart now and get your pool back up and running with genuine Pentair parts.