Product Overview

The Pentair ETi® 250 High Efficiency Heater (Model 461112) delivers premium heating performance with a 250,000 BTU output and an industry-leading 95% thermal efficiency—the highest efficiency rating for a pool heater in its class. Featuring Pentair’s exclusive Titanium ASME-certified heat exchanger, the ETi 250 is engineered for ultimate durability, superior corrosion resistance, and extremely low operating costs.

Perfect for pool owners seeking fast heat-up times, reduced gas consumption, and long-lasting reliability, the ETi 250 stands as one of the most advanced heating solutions available today.

Ideal For

• Residential in-ground pools and spas

• Customers seeking maximum energy efficiency in a gas heater

• Pools in coastal or saltwater environments requiring corrosion resistance

• Replacements for older, inefficient heaters

• High-demand, year-round heating applications

Key Features

• 250,000 BTU Output: Heats pools and spas quickly with powerful, consistent performance.

• Ultra-High Efficiency (95%): One of the most energy-efficient gas pool heaters in the industry.

• Titanium ASME Heat Exchanger: Designed for unmatched corrosion resistance—ideal for saltwater pools.

• Quiet Operation: Engineered to minimize noise for a peaceful backyard experience.

• Full Modulation Burner: Automatically adjusts flame levels to maintain precise water temperature and maximize fuel savings.

• Low NOx Emissions: Eco-friendly design meets stringent environmental standards.

• Durable Composite Exterior: Weather-resistant housing stands up to harsh outdoor conditions.

• Advanced Digital Controls: Intuitive interface provides temperature management, diagnostics, and service indicators.

• Flexible Installation: Versatile venting and connection options simplify both new installs and replacements.

Benefits

• Lowest Operating Costs: High efficiency dramatically reduces monthly gas expenses.

• Superior Durability: Titanium heat exchanger resists saltwater, chemicals, and corrosion.

• Fast Heat-Up Times: Quickly brings pool and spa water to your desired comfort level.

• Long Service Life: Designed with premium materials that outperform standard copper/nickel exchangers.

• Quiet Backyard Operation: Smooth, quiet combustion creates a more enjoyable environment.

• Precision Temperature Control: Consistent water temperatures with minimal fluctuation.

Customer Q&A

Q: Is the ETi 250 suitable for saltwater pools?
A: Yes—its titanium heat exchanger is built specifically to withstand saltwater and harsh chemistry.

Q: How efficient is this heater compared to others?
A: At 95% thermal efficiency, the ETi 250 is among the highest-efficiency gas pool heaters available.

Q: What type of gas does it use?
A: This model is typically supplied in natural gas, but confirm your configuration at time of purchase.

Q: Can this heater be used year-round?
A: Absolutely. Its durability and efficiency make it ideal for daily or seasonal heating.

Q: Does the heater support automation systems?
A: Yes, the ETi 250 works with Pentair automation such as IntelliCenter®, EasyTouch®, and more.

Specifications

• Model Number: 461112

• BTU Output: 250,000 BTU

• Thermal Efficiency: 95%

• Heat Exchanger: Titanium ASME-rated

• Fuel Type: Natural Gas (verify configuration)

• Application: Residential in-ground pools and spas

• Emissions: Low NOx

• Voltage: 120/240 VAC

• Housing: Weather-resistant composite

• Display: Digital control panel with diagnostics

• Manufacturer: Pentair