Pentair Heater Eti 250k Btu Asme-Natural - 461112

Commercial-Grade operation. Titanium-Grade Reliability.

The Pentair ETi 250K BTU ASME Natural Gas Heater redefines what long-term reliability means for pool heating. Made for both commercial facilities and high-end residential pools, this system delivers fast, efficient heating with the industry’s only titanium heat exchanger in its class — built to withstand the harshest water conditions and dramatically extend equipment life.

While many heaters promise operation, the ETi 250K delivers peace of mind. It’s engineered not just to heat your pool, but to protect your investment year after year.

Key Technical Specifications

The Titanium Advantage — Built to Outlast

Corrosion is the silent killer of pool heaters. Competing models from Hayward, Raypak, and Jandy rely on cupro-nickel heat exchangers that are vulnerable to pitting and scaling caused by imperfect water chemistry — a common cause of heater failure and warranty disputes.

The ETi’s titanium heat exchanger resists even the most aggressive water conditions, providing:

• Up to 10× longer service life than standard materials
• Fewer upkeep calls and costly repairs (common repairs often cost $1,500–$2,000+)
• Reliable operation in saltwater and variable pH environments

Think of titanium as your built-in insurance policy — protecting against corrosion, downtime, and unexpected expenses.

Total Cost of Ownership (TCO) Advantage

Although the ETi 250K’s price is higher than comparable models (65–100% premium), it pays for itself over time through:

• Fewer replacements and reduced repair costs
• Lower warranty risk thanks to corrosion immunity
• Consistent heating efficiency that preserves energy output over the heater’s lifetime

Competitor Comparison

The ETi 250K is engineered for the lowest total ownership cost — not just the lowest upfront price.

Installer-Friendly Design

• Compact footprint and ASME certification for flexible installations
• Digital diagnostics simplify troubleshooting and upkeep
• Quiet operation helps ensure minimal disruption for guests or homeowners

Whether you’re a pool professional or facility operator, the ETi’s thoughtful engineering reduces service time and repeat upkeep calls.

Warranty & Support

• Backed by Pentair’s ASME commercial warranty
• Supported by Active Pool Supply’s 30-day return policy and dedicated U.S. support team
• Secure transactions and Shop Pay financing available

View Pentair Warranty Details ›

Why Choose Pentair ETi 250K

• Titanium reliability – Outlasts and outperforms all copper-based heaters
• Commercial-grade build – Certified for continuous, demanding use
• Peace of mind – Virtually eliminates corrosion-related warranty disputes
• Whisper-quiet heating – Made for operation without distraction
• Smart investment – The lowest total cost of ownership in its class

Recommended For

• Commercial pool operators needing certified, long-lasting heating
• Luxury homeowners prioritizing reliability and low upkeep
• Pool service professionals seeking long-term client satisfaction