Efficiently heat up your pool for comfortable temperatures year-round with the Pentair 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.

Key features and benefits:

• Up to 96% thermal efficiency*. For every $1 of natural gas that’s piped into the heater, up to 96 cents go directly to heating your pool, ensuring optimal heating.
• The TitanTough™ Direct-Fire Titanium Heat Exchanger is resistant to corrosion and is the toughest heat exchanger ever built—for years of high-quality, trustworthy warmth.
• A variety of installation features, including multiple orientation options for gas line connection and easy-access keypad positioning.
• The ETi 250 is 250,000 BTUs (BTU is the quantity of heat needed to raise one pound of water by one degree Fahrenheit). The higher the BTUs, the higher the heating power, and the faster your pool can heat up.
  
• Three-year parts and labor warranty