{"product_id":"pentair-eti®-400-high-efficiency-natural-gas-heater-400k","title":"Pentair ETi® 400 High Efficiency Natural Gas Heater 400K","description":"\u003cp\u003eThe Pentair ETi® 400 is a revolutionary, high-efficiency natural gas heater designed to provide professional-grade thermal performance with an incredible 96% thermal efficiency rating. This 400,000 BTU unit is engineered with a high-grade TitanTough™ direct-fire titanium heat exchanger, which offers unparalleled resistance to corrosion and scaling, ensuring a significantly longer lifespan even in pools with high salt levels or aggressive water chemistry. Its advanced condensing technology captures heat that traditional heaters lose through the exhaust, allowing it to heat water faster while drastically reducing energy costs and carbon emissions. The unit features a fully sealed combustion system and a category IV venting design, which permits flexible installation options including indoor and vertical configurations. A user-friendly digital control panel provides precise temperature management and detailed system diagnostics, while the rust-proof composite exterior ensures durability against the elements. Because of its industrial-grade titanium internal components, heavy-duty insulation, and robust heat exchanger design, the unit possesses a substantial physical presence compared to standard heaters. The Pentair ETi 400 High Efficiency Natural Gas Heater weighs approximately \u003cb data-path-to-node=\"1\" data-index-in-node=\"1297\"\u003e307 pounds\u003c\/b\u003e, serving as the ultimate high-performance, eco-friendly heating solution for large residential and commercial aquatic facilities.\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53093340053615,"sku":"461113","price":19916.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/PUR-15-2001_medium_267ce787-563b-4b6a-b14f-ac7b1a955ff3.jpg?v=1778769773","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-eti%c2%ae-400-high-efficiency-natural-gas-heater-400k","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}