{"product_id":"pentair-mastertemp-asme-400-heater-propane-gas-400k-btu-460776","title":"Pentair Mastertemp ASME 400 Heater Propane Gas, 400K BTU | 460776","description":"\u003ch2 data-start=\"0\" data-end=\"20\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cstrong data-start=\"0\" data-end=\"20\"\u003eProduct Overview\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"22\" data-end=\"254\"\u003eThe Pentair MasterTemp ASME 400 Heater Propane Gas, 400K BTU | 460776 is a commercial-grade propane pool and spa heater designed for fast, reliable heating in demanding residential, semi-commercial, and commercial pool applications.\u003c\/p\u003e\n\u003cp data-start=\"256\" data-end=\"548\"\u003eBuilt with an \u003cstrong data-start=\"270\" data-end=\"303\"\u003eASME-certified heat exchanger\u003c\/strong\u003e, this heater is designed for applications where ASME construction is required or preferred. With \u003cstrong data-start=\"401\" data-end=\"416\"\u003e400,000 BTU\u003c\/strong\u003e of heating power, the MasterTemp ASME 400 delivers quick heat-up performance for larger pools, attached spas, and high-use systems.\u003c\/p\u003e\n\u003cp data-start=\"550\" data-end=\"687\"\u003eThis propane model is a strong choice for properties that do not have natural gas available and need dependable high-output pool heating.\u003c\/p\u003e\n\u003cp data-start=\"689\" data-end=\"702\"\u003e\u003cstrong data-start=\"689\" data-end=\"702\"\u003eIdeal For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"704\" data-end=\"1014\"\u003eCommercial pools, hotel pools, apartment and HOA pools, large residential pools, pool\/spa combinations, and applications where an ASME-rated propane heater is required. This model is best suited for professional installations where fast heat-up, propane fuel compatibility, and ASME construction are important.\u003c\/p\u003e\n\u003cp data-start=\"1016\" data-end=\"1032\"\u003e\u003cstrong data-start=\"1016\" data-end=\"1032\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1034\" data-end=\"1063\"\u003e\u003cstrong data-start=\"1034\" data-end=\"1063\"\u003e400,000 BTU Heating Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1065\" data-end=\"1163\"\u003eProvides high-output heating performance for large pools, spas, and commercial-style pool systems.\u003c\/p\u003e\n\u003cp data-start=\"1165\" data-end=\"1197\"\u003e\u003cstrong data-start=\"1165\" data-end=\"1197\"\u003eASME-Certified Heater Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1199\" data-end=\"1300\"\u003eBuilt with an ASME heat exchanger for applications that require commercial-grade heater construction.\u003c\/p\u003e\n\u003cp data-start=\"1302\" data-end=\"1323\"\u003e\u003cstrong data-start=\"1302\" data-end=\"1323\"\u003ePropane Gas Model\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1325\" data-end=\"1416\"\u003eDesigned for propane gas installations where natural gas is not available or not preferred.\u003c\/p\u003e\n\u003cp data-start=\"1418\" data-end=\"1446\"\u003e\u003cstrong data-start=\"1418\" data-end=\"1446\"\u003eFast Heat-Up Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1448\" data-end=\"1582\"\u003eThe 400K BTU output helps heat pools and spas quickly, making it ideal for pool\/spa combinations and high-demand heating applications.\u003c\/p\u003e\n\u003cp data-start=\"1584\" data-end=\"1609\"\u003e\u003cstrong data-start=\"1584\" data-end=\"1609\"\u003eDigital Control Panel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1611\" data-end=\"1724\"\u003eUser-friendly digital controls make it easier to monitor heater status, adjust temperature, and operate the unit.\u003c\/p\u003e\n\u003cp data-start=\"1726\" data-end=\"1755\"\u003e\u003cstrong data-start=\"1726\" data-end=\"1755\"\u003eCompact MasterTemp Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1757\" data-end=\"1919\"\u003eThe MasterTemp platform is known for its compact footprint, making it easier to fit into many equipment pad layouts compared with larger commercial heater bodies.\u003c\/p\u003e\n\u003cp data-start=\"1921\" data-end=\"1942\"\u003e\u003cstrong data-start=\"1921\" data-end=\"1942\"\u003eLow NOx Operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1944\" data-end=\"2035\"\u003eDesigned for efficient combustion and reduced emissions compared with older heater designs.\u003c\/p\u003e\n\u003cp data-start=\"2037\" data-end=\"2074\"\u003e\u003cstrong data-start=\"2037\" data-end=\"2074\"\u003eProfessional Pool and Spa Heating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2076\" data-end=\"2180\"\u003eA strong choice for demanding heating applications where durability, output, and code compliance matter.\u003c\/p\u003e\n\u003cp data-start=\"2182\" data-end=\"2194\"\u003e\u003cstrong data-start=\"2182\" data-end=\"2194\"\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2196\" data-end=\"2512\"\u003eThe Pentair MasterTemp ASME 400 Propane Heater gives pool owners and commercial operators powerful heating performance in a compact, professional-grade package. Its 400K BTU output helps reduce heat-up time, while the ASME-certified design supports use in applications where commercial heater standards are required.\u003c\/p\u003e\n\u003cp data-start=\"2514\" data-end=\"2768\"\u003eFor properties using propane fuel, this model provides a dependable alternative to natural gas heating. It is especially useful for larger pools, spas, hotels, apartment communities, HOA pools, and backyard systems where quick heat recovery is important.\u003c\/p\u003e\n\u003cp data-start=\"2770\" data-end=\"2788\"\u003e\u003cstrong data-start=\"2770\" data-end=\"2788\"\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2790\" data-end=\"3364\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2790\" data-end=\"2817\"\u003e\n\u003ctr data-start=\"2790\" data-end=\"2817\"\u003e\n\u003cth data-start=\"2790\" data-end=\"2806\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"2806\" data-end=\"2817\" data-col-size=\"md\" class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2828\" data-end=\"3364\"\u003e\n\u003ctr data-start=\"2828\" data-end=\"2847\"\u003e\n\u003ctd data-start=\"2828\" data-end=\"2836\" data-col-size=\"sm\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-start=\"2836\" data-end=\"2847\" data-col-size=\"md\"\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2848\" data-end=\"2882\"\u003e\n\u003ctd data-start=\"2848\" data-end=\"2863\" data-col-size=\"sm\"\u003eProduct Line\u003c\/td\u003e\n\u003ctd data-start=\"2863\" data-end=\"2882\" data-col-size=\"md\"\u003eMasterTemp ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2883\" data-end=\"2925\"\u003e\n\u003ctd data-start=\"2883\" data-end=\"2898\" data-col-size=\"sm\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2898\" data-end=\"2925\"\u003ePool and Spa Gas Heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2926\" data-end=\"2956\"\u003e\n\u003ctd data-start=\"2926\" data-end=\"2946\" data-col-size=\"sm\"\u003ePart Number \/ SKU\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2946\" data-end=\"2956\"\u003e460776\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2957\" data-end=\"2984\"\u003e\n\u003ctd data-start=\"2957\" data-end=\"2969\" data-col-size=\"sm\"\u003eFuel Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2969\" data-end=\"2984\"\u003ePropane Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2985\" data-end=\"3013\"\u003e\n\u003ctd data-start=\"2985\" data-end=\"2998\" data-col-size=\"sm\"\u003eBTU Rating\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2998\" data-end=\"3013\"\u003e400,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3014\" data-end=\"3044\"\u003e\n\u003ctd data-start=\"3014\" data-end=\"3036\" data-col-size=\"sm\"\u003eHeat Exchanger Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3036\" data-end=\"3044\"\u003eASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3045\" data-end=\"3083\"\u003e\n\u003ctd data-start=\"3045\" data-end=\"3059\" data-col-size=\"sm\"\u003eApplication\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3059\" data-end=\"3083\"\u003ePool and spa heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3084\" data-end=\"3127\"\u003e\n\u003ctd data-start=\"3084\" data-end=\"3098\" data-col-size=\"sm\"\u003eHeater Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3098\" data-end=\"3127\"\u003eGas-fired pool\/spa heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3128\" data-end=\"3175\"\u003e\n\u003ctd data-start=\"3128\" data-end=\"3149\" data-col-size=\"sm\"\u003eIgnition \/ Control\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3149\" data-end=\"3175\"\u003eDigital control system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3176\" data-end=\"3199\"\u003e\n\u003ctd data-start=\"3176\" data-end=\"3188\" data-col-size=\"sm\"\u003eEmissions\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3188\" data-end=\"3199\"\u003eLow NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3200\" data-end=\"3264\"\u003e\n\u003ctd data-start=\"3200\" data-end=\"3215\" data-col-size=\"sm\"\u003eInstallation\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3215\" data-end=\"3264\"\u003eOutdoor professional installation recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3265\" data-end=\"3337\"\u003e\n\u003ctd data-start=\"3265\" data-end=\"3276\" data-col-size=\"sm\"\u003eUse Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3276\" data-end=\"3337\"\u003eResidential, semi-commercial, and commercial applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"3338\" data-end=\"3364\"\u003e\n\u003ctd data-start=\"3338\" data-end=\"3353\" data-col-size=\"sm\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"3353\" data-end=\"3364\"\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"3366\" data-end=\"3389\"\u003e\u003cstrong data-start=\"3366\" data-end=\"3389\"\u003eCustomer-Facing Q\u0026amp;A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3391\" data-end=\"3474\"\u003e\u003cstrong data-start=\"3391\" data-end=\"3438\"\u003eQ: What is the part number for this heater?\u003c\/strong\u003e\u003cbr data-start=\"3438\" data-end=\"3441\"\u003eA: The part number is \u003cstrong data-start=\"3463\" data-end=\"3473\"\u003e460776\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3476\" data-end=\"3592\"\u003e\u003cstrong data-start=\"3476\" data-end=\"3521\"\u003eQ: Is this heater natural gas or propane?\u003c\/strong\u003e\u003cbr data-start=\"3521\" data-end=\"3524\"\u003eA: This model is \u003cstrong data-start=\"3541\" data-end=\"3556\"\u003epropane gas\u003c\/strong\u003e. It is not the natural gas version.\u003c\/p\u003e\n\u003cp data-start=\"3594\" data-end=\"3683\"\u003e\u003cstrong data-start=\"3594\" data-end=\"3637\"\u003eQ: How many BTUs is the Pentair 460776?\u003c\/strong\u003e\u003cbr data-start=\"3637\" data-end=\"3640\"\u003eA: This heater is rated at \u003cstrong data-start=\"3667\" data-end=\"3682\"\u003e400,000 BTU\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3685\" data-end=\"3937\"\u003e\u003cstrong data-start=\"3685\" data-end=\"3727\"\u003eQ: What does ASME mean on this heater?\u003c\/strong\u003e\u003cbr data-start=\"3727\" data-end=\"3730\"\u003eA: ASME refers to a commercial-grade heat exchanger construction standard. ASME heaters are often required for commercial pools, public pools, HOA pools, hotel pools, and certain code-regulated applications.\u003c\/p\u003e\n\u003cp data-start=\"3939\" data-end=\"4161\"\u003e\u003cstrong data-start=\"3939\" data-end=\"3992\"\u003eQ: Can this heater be used on a residential pool?\u003c\/strong\u003e\u003cbr data-start=\"3992\" data-end=\"3995\"\u003eA: Yes, it can be used on residential pool and spa systems when properly sized and installed. It is also commonly used in semi-commercial and commercial applications.\u003c\/p\u003e\n\u003cp data-start=\"4163\" data-end=\"4353\"\u003e\u003cstrong data-start=\"4163\" data-end=\"4203\"\u003eQ: Is this good for an attached spa?\u003c\/strong\u003e\u003cbr data-start=\"4203\" data-end=\"4206\"\u003eA: Yes. A 400K BTU heater is a strong option for pool\/spa combinations because it can heat spa water quickly when the system is properly installed.\u003c\/p\u003e\n\u003cp data-start=\"4355\" data-end=\"4641\"\u003e\u003cstrong data-start=\"4355\" data-end=\"4411\"\u003eQ: Can I convert this propane heater to natural gas?\u003c\/strong\u003e\u003cbr data-start=\"4411\" data-end=\"4414\"\u003eA: Fuel conversions should only be performed if the correct manufacturer-approved conversion kit is available and installed by a qualified professional. Always confirm conversion compatibility before attempting any fuel change.\u003c\/p\u003e\n\u003cp data-start=\"4643\" data-end=\"4922\"\u003e\u003cstrong data-start=\"4643\" data-end=\"4701\"\u003eQ: Does this heater require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"4701\" data-end=\"4704\"\u003eA: Yes. Gas heaters require proper gas sizing, electrical wiring, bonding, plumbing, ventilation clearance, and code compliance. Installation should be completed by a qualified pool professional or licensed contractor.\u003c\/p\u003e\n\u003cp data-start=\"4924\" data-end=\"5169\"\u003e\u003cstrong data-start=\"4924\" data-end=\"4969\"\u003eQ: What should I confirm before ordering?\u003c\/strong\u003e\u003cbr data-start=\"4969\" data-end=\"4972\"\u003eA: Confirm fuel type, BTU size, ASME requirement, gas line sizing, plumbing layout, installation clearance, local code requirements, and whether propane is the correct fuel source for the property.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52762921632054,"sku":"PEN460776 -H","price":4439.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/pentair-mastertemp-asme-400-heater-propane-gas-400k-btu-460776.png?v=1792648052","url":"https:\/\/poolsupplydepot.net\/products\/pentair-mastertemp-asme-400-heater-propane-gas-400k-btu-460776","provider":"Pool Supply Depot","version":"1.0","type":"link"}