{"product_id":"pentair-max-e-therm®-liquid-propane-pool-spa-heater-400k-btu","title":"Pentair Max-E-Therm® Liquid Propane Pool \u0026 Spa Heater 400K BTU","description":"\u003cp\u003eThe Pentair Max-E-Therm® 400,000 BTU Liquid Propane (LP) Heater is a high-capacity, professional-grade heating system designed to provide rapid temperature elevation for large residential and commercial pools and spas. This model utilizes a sophisticated pre-mixed combustion system that optimizes the propane-to-air mixture for maximum efficiency and faster heat-up times while maintaining a \"Low NOx\" certification for environmentally friendly operation. Its distinctive, compact housing is manufactured from Dura-Glas™—a high-density, rust-proof composite resin—which ensures the unit remains impervious to the corrosive effects of salt air, pool chemicals, and harsh weather conditions. The internal design features a heavy-duty cupro-nickel heat exchanger, providing enhanced durability and superior resistance to fluctuating water chemistry for a longer operational life. A user-friendly digital control panel offers precise temperature management with dual thermostats for pool and spa settings, while integrated safety sensors and self-diagnostic indicators simplify operation. Despite its streamlined profile, the unit contains a substantial internal firebox and professional-grade plumbing components that provide a solid, industrial build. The Pentair Max-E-Therm 400K BTU Liquid Propane Heater weighs approximately \u003cb data-path-to-node=\"1\" data-index-in-node=\"1327\"\u003e138 pounds\u003c\/b\u003e, standing as an ultra-reliable, quiet, and powerful heating solution for high-demand aquatic environments.\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53093391466607,"sku":"SR400LP","price":8056.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/max_e_therm_f20c308c-a971-44c2-92d3-887ba38de34f.avif?v=1778770467","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-max-e-therm%c2%ae-liquid-propane-pool-spa-heater-400k-btu","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}