{"product_id":"pentair-461020-mastertemp-asme-pool-and-spa-heater","title":"PENTAIR MASTERTEMP 461020 ASME LOW NOX NATURAL GAS POOL \u0026 SPA HEATER – 250K BTU, CUPRO-NICKEL HEAT EXCHANGER","description":"\u003cp\u003e\u003cstrong\u003eHeating Capacity:\u003c\/strong\u003e 250,000 BTU\u003cbr\u003e\u003cstrong\u003eThermal Efficiency:\u003c\/strong\u003e 82%\u003cbr\u003e\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Natural Gas\u003cbr\u003e\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e Cupro-Nickel (Heavy Duty)\u003cbr\u003e\u003cstrong\u003eCertification:\u003c\/strong\u003e ASME\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 140 lbs\u003cbr\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e Certified Low NOx\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Commercial\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003ePentair 461020 MasterTemp ASME HD Pool \u0026amp; Spa Heater\u003c\/strong\u003e delivers \u003cstrong\u003e250,000 BTU\u003c\/strong\u003e in a configuration that stacks two heavy-duty specifications: \u003cstrong\u003eASME certification\u003c\/strong\u003e and a \u003cstrong\u003ecupro-nickel heat exchanger\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThat combination is deliberate. ASME certification satisfies commercial code requirements for the pressure vessel. The cupro-nickel exchanger - the HD in the model name - handles salt-chlorinated water and the aggressive chemistry that comes with high bather loads, where a standard copper exchanger corrodes and fails early.\u003c\/p\u003e\u003cp\u003eThe trade is a small efficiency cost: \u003cstrong\u003e82% thermal efficiency\u003c\/strong\u003e against 84% for the standard copper version. On a commercial pool running high chlorine or salt, the exchanger longevity is worth far more than the two points.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e250,000 BTU heating capacity\u003c\/li\u003e\n\u003cli\u003e82% thermal efficiency\u003c\/li\u003e\n\u003cli\u003eNatural Gas\u003c\/li\u003e\n\u003cli\u003eASME certified for commercial installations\u003c\/li\u003e\n\u003cli\u003eHeavy-duty cupro-nickel heat exchanger\u003c\/li\u003e\n\u003cli\u003eBuilt for salt-chlorinated and high-chlorine water\u003c\/li\u003e\n\u003cli\u003eCertified low NOx emissions\u003c\/li\u003e\n\u003cli\u003eRotating digital display for any installation orientation\u003c\/li\u003e\n\u003cli\u003eIndicator lights for at-a-glance operation monitoring\u003c\/li\u003e\n\u003cli\u003eBuilt-in manual gas shutoff for service\u003c\/li\u003e\n\u003cli\u003eCompact, quiet design\u003c\/li\u003e\n\u003cli\u003eRustproof exterior construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e461020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMasterTemp 250 ASME HD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBTU Input\u003c\/td\u003e\n\u003ctd\u003e250,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Efficiency\u003c\/td\u003e\n\u003ctd\u003e82%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Exchanger\u003c\/td\u003e\n\u003ctd\u003eCupro-Nickel (Heavy Duty)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e140 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmissions\u003c\/td\u003e\n\u003ctd\u003eCertified Low NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eRotating Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas Shutoff\u003c\/td\u003e\n\u003ctd\u003eManual, Built In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior\u003c\/td\u003e\n\u003ctd\u003eRustproof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCommercial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhat's Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePentair 461020 MasterTemp ASME HD Pool \u0026amp; Spa Heater\u003c\/li\u003e\n\u003cli\u003eCupro-nickel heat exchanger assembly\u003c\/li\u003e\n\u003cli\u003eRotating digital display control\u003c\/li\u003e\n\u003cli\u003eInstallation and operation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe \u003cstrong\u003ePentair 461020\u003c\/strong\u003e pairs ASME certification with a cupro-nickel exchanger at 250,000 BTU - the specification for commercial salt pools where standard copper will not last.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLearn more at Pentair:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.pentair.com\/en-us\/products\/business-industry\/commercial-pool-products\/commercial-pool-heaters\/mastertemp--high-performance-asme--certified-heaters.html\"\u003ehttps:\/\/www.pentair.com\/en-us\/products\/business-industry\/commercial-pool-products\/commercial-pool-heaters\/mastertemp--high-performance-asme--certified-heaters.html\u003c\/a\u003e\u003c\/p\u003e\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48867140239609,"sku":"461020","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/1810\/9689\/files\/461020_600x600_9492a290-2d7c-4fb9-9f25-5119a11aa28f.png?v=1787271707","url":"https:\/\/poolave.com\/products\/pentair-461020-mastertemp-asme-pool-and-spa-heater","provider":"PoolAve ","version":"1.0","type":"link"}