Efficiently heat your pool for comfortable temperatures year-round with the ETi 250. With quick heat-up times and the durable TitanTough™ Direct-Fire Titanium, the toughest heat exchanger material, effectively warm up your pool. A great replacement for the MasterTemp® High-Performance Heater, with the same plumbing alignments to effectively serve your backyard oasis needs. Say goodbye to those after-pool shivers and hello to a cozy and warm backyard spa.

• Corrosion-resistant Titan-Tough™ Direct-Fire Titanium Heat Exchanger
• Up to 96% thermal efficiency.1 For every $1 of natural gas that’s piped into the heater, up to 96 cents goes directly to heating your pool, ensuring optimal heating
• Certified for low NOx emissions 2
• Certified for Category IV PVC exhaust venting and air intake 3
• 360° gas line connection options for ease-of-installation
• 270° control panel orientation options for ease of access.
• Large removable panels make accessing the heater internals easier
• Plumbing aligns exactly with MasterTemp® and Max-E-Therm® heaters, making ETi 250 an ideal drop-in replacement on tight equipment pads
• Three-year parts and labor warranty

_{*The ETi 400 is 96% efficient. The ETi 250 is 94% efficient when operated on natural gas and is 96% efficient when operated on propane with an available conversion kit.} 

• Brochure
  
• InstallGuide
• Ops Man

Specifications:

• Brand: Pentair
• Application: Pool, up to 30,000 gallons*
• BTU Output: 250,000 British thermal unit
• Weight: 220 pounds
• Fuel Type: Natural Gas
• Phase: Single
• UPC Code: 788379877491
• Part Number: 461112 ETi 250 High-Efficiency Heater, Natural Gas

Accessories:

• 462057 - ETi 250 High-Altitude Conversion Kit - 2,000 ft - 10,000 ft, Natural
  
• 476370 - ETi 250 Propane Conversion Kit - 0 - 2,000 ft Propane
• 476375 - ETi 250 Condensate Neutralizer Replacement Kit - ETi 250 heater produces condensate while in operation. The pH level of the condensate is between 3.1 and 4.2, and Pentair recommends that users neutralize the condensate by installing the optional ETi 250 Condensate Neutralizer Kit.
• 476371 - ETi 250 Indoor Direct Air Intake Kit - For applications in which the ETi 250 will be installed indoors using a Direct Air Intake, use this kit for simplified installation.

*Please Note: The BTU rating is the minimum heating requirement for the recommended gallons shown. This is under perfect conditions with no temperature loss. Always size up if you plan to use the heater in cool weather or without a cover. Need help? Contact us anytime - we’re here to help!