{"product_id":"pentair-474065-cupro-nickel-tube-sheet-coil-assembly-kit-400hdna-400hd-lp-mastertemp-after-1-12-09-genuine-oem","title":"Pentair 474065 Cupro-Nickel Tube Sheet Coil Assembly Kit — 400HDNA \u0026 400HD-LP MasterTemp, After 1\/12\/09 — Genuine OEM","description":"\u003cp\u003eThe \u003cstrong\u003ePentair 474065 Tube Sheet Coil Assembly Kit\u003c\/strong\u003e is the genuine OEM \u003cstrong\u003ecupro-nickel HD Series\u003c\/strong\u003e heat exchanger for \u003cstrong\u003e400,000 BTU\u003c\/strong\u003e MasterTemp and Sta-Rite Max-E-Therm heaters built \u003cstrong\u003eafter 1\/12\/2009\u003c\/strong\u003e. Cupro-nickel resists the aggressive water chemistry that shortens the life of a standard copper exchanger.\u003c\/p\u003e\n\n\u003ch2\u003e⚠️ Check Model and Build Date\u003c\/h2\u003e\n\u003cp\u003eThis kit fits \u003cstrong\u003e400HDNA\u003c\/strong\u003e and \u003cstrong\u003e400HD-LP\u003c\/strong\u003e models built \u003cstrong\u003eafter 1\/12\/09\u003c\/strong\u003e (new tub design). It is the heavy-duty cupro-nickel version. If your heater is a standard 400NA or 400LP, the copper kit \u003cstrong\u003e474061\u003c\/strong\u003e is the correct part. For heaters built before 1\/12\/09, see 77707-0244 (cupro-nickel) or 77707-0234 (copper).\u003c\/p\u003e\n\n\u003ch2\u003eWhy Cupro-Nickel\u003c\/h2\u003e\n\u003cp\u003eCupro-nickel tolerates high salt levels, low pH, high chlorine and heavy chemical loading far better than copper. It is the standard recommendation for salt chlorinated pools, commercial installations and any system where water chemistry runs outside ideal ranges. It can also be fitted as an upgrade to a heater that originally shipped with a copper exchanger.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Pentair OEM:\u003c\/strong\u003e Correct fit and geometry for the post-2009 tub design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCupro-nickel construction:\u003c\/strong\u003e Substantially longer service life than copper in salt and chemically aggressive water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete service kit:\u003c\/strong\u003e Includes o-rings, insulation, igniter and blower gaskets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural gas and propane:\u003c\/strong\u003e Fits both 400HDNA and 400HD-LP configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores efficiency:\u003c\/strong\u003e A corroded heat exchanger wastes fuel and can leak pool water into the combustion chamber.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 474065\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Tube sheet coil assembly kit (heat exchanger), HD Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 400,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cupro-nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e MasterTemp 400HDNA, 400HD-LP; Sta-Rite Max-E-Therm 400 HD models — built after 1\/12\/09\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Tube sheet coil assembly, o-rings, insulation, igniter, blower gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 40 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper Equivalent:\u003c\/strong\u003e 474061 (models 400NA, 400LP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-2009 Cupro-Nickel:\u003c\/strong\u003e 77707-0244\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Part Numbers:\u003c\/strong\u003e 6291-015, PUR-151-5065\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 788379792039\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair (Genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the difference between 474065 and 474061?\u003c\/h3\u003e\n\u003cp\u003eMaterial and heater model. The \u003cstrong\u003e474061\u003c\/strong\u003e is copper, for standard 400NA and 400LP heaters. The \u003cstrong\u003e474065\u003c\/strong\u003e is cupro-nickel, for heavy-duty 400HDNA and 400HD-LP heaters. Both are for post-1\/12\/09 builds.\u003c\/p\u003e\n\n\u003ch3\u003eCan I upgrade my copper heater to cupro-nickel?\u003c\/h3\u003e\n\u003cp\u003eIn many cases yes — the HD Series exchanger is often used as an upgrade where water chemistry has destroyed a copper unit. Confirm compatibility with a qualified technician before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need cupro-nickel for a salt pool?\u003c\/h3\u003e\n\u003cp\u003eIt is strongly recommended. Salt chlorination, low pH and high chlorine levels all attack copper. Cupro-nickel is the standard choice in these conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know if my heater is before or after 1\/12\/09?\u003c\/h3\u003e\n\u003cp\u003eCheck the manufacturing date on the rating plate. Pre-2009 heaters use a different tub design and require 77707-0244 for the cupro-nickel version.\u003c\/p\u003e\n\n\u003ch3\u003eWhat symptoms indicate a failed heat exchanger?\u003c\/h3\u003e\n\u003cp\u003eWater leaking into the combustion chamber, rising copper levels in your pool water, visible corrosion on the tubes, or a heater that fires but will not hold temperature.\u003c\/p\u003e\n\n\u003ch3\u003eWho should install it?\u003c\/h3\u003e\n\u003cp\u003eA qualified pool heater technician. The job involves gas and combustion components and requires the heater to be fully depressurised and disconnected. Professional installation is required for warranty validation.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52974512439613,"sku":"474065","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6741\/8429\/files\/474065-2-1_a1d823c5-8b44-4b62-a81f-25c11bace2e3.jpg?v=1788546175","url":"https:\/\/poolsupply4u.com\/products\/pentair-474065-cupro-nickel-tube-sheet-coil-assembly-kit-400hdna-400hd-lp-mastertemp-after-1-12-09-genuine-oem","provider":"PoolSupply 4U","version":"1.0","type":"link"}