ETI 400 High Efficiency Gas Pool Heater - TradeGrade

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ETi® 400 High-Efficiency Pool and Spa Heater


The World’s First Pool Heater With a Direct Fire Titanium Heat Exchanger

The ETi 400 pool and spa heater brings you TitanTough Direct-Fire Titanium, the toughest ASME certified construction heat exchanger ever built. At 96% thermal efficiency, the ETi 400 heater has the highest efficiency ever built in its class. All this in a heater that operates with ultra-quiet noise level and out performs energy emissions standards.

  • TitanTough Direct-Fire Titanium ASME certified heat exchanger
  • Certified for Ultra Low NOx Emissions
  • Best-in-Class Energy Efficiency for fast heat up times and energy savings
  • 4” PVC or CPVC vent up to 120 ft and 6” vent up to 300 ft long
  • Indoor and Outdoor rating
  • Ultra-Quiet operation
  • Convenient 180 degrees rotating controls panel for left or right plumbing orientation
  • Convenient front and rear gas connection capability
  • Natural and Propane gas
Find out where to purchase online or in a retail location near you.
Pentair ETi 400 high efficiency pool heater is the first pool heater with a pure titanium heat exchanger.
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Product Components

  1. Stands up to the toughest conditions 1,800° F flame temperatures and pool water chemistry are all in a day’s work for titanium.
  2. Design elements that boost durability and efficiency. No welds, crimps or joints that reduce corrosion resistance. Tubing is shaped for maximum flow and efficiency.
  3. Industrial chemical processors lean on titanium. When handling concentrated chlorine compounds, industrial processors rely on the corrosion resistance of titanium piping and heat exchangers.

Unmatched Durability and Efficiency

  1. EASY TO VENT PROPERLY: Fully sealed Category IV direct-air vent does not require large room openings for combustion air
  2. ULTRA-QUIET OPERATION: Great for you, great for your neighbors
  3. INSTALL IN LEFT OR RIGHT ORIENTATION: Rotatable front door allows control pad to be rotated 180 degrees, so this heater can be plumbed on the right- or left-hand side
Pentair ETi 400 high efficiency pool heater is 96% efficient.
Pentair ETi 400 high efficiency pool heater uses pure titanium in its heat exchanger to increase efficiency and reduce corrosion.

A Metal That Gets Respect

Titanium is known for excellent corrosion resistance, high strength and light weight. The job of the heat exchanger is to capture the heat from burning gas and transfer it to your pool’s water—the more efficiently, the better. But, the combination of operating heat and pool water chemistry can be tough on exchangers, leading to corrosion and failure. That’s why we made the ETi 400 High-Efficiency Heater’s direct-fire heat exchanger from titanium. It provides long life under extreme conditions.




Item #DescriptionWeight (LBS)Purchase Options
461113ETi 400379Available Through Dealer
Item #DescriptionWeight (LBS)Purchase Options
461113ETi 400379Available Through Dealer

*Pentair has a trained team of TradeGrade experts and third-party resources that will be scouring the internet 24/7 for TradeGrade violations. Our guarantee to you is that we will use all resources at our disposal to actively monitor and enforce this policy.If a TradeGrade product is sold online, the warranty will be limited to a 60-day limited warranty. Pentair will not be liable for any costs or expenses related to an extended warranty provided to a customer beyond the 60-day limited warranty that Pentair provides for such sales. Additionally, no PIP dollars will be rewarded to the dealer for the purchase. When a TradeGrade product is purchased and sold in compliance with the TradeGrade policy, that product will receive the full product warranty.

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