{"product_id":"pentair-474061-tube-sheet-coil-assembly-kit-400k-btu-mastertemp-max-e-therm-after-1-12-09-genuine-oem","title":"Pentair 474061 Tube Sheet Coil Assembly Kit — 400K BTU MasterTemp \u0026 Max-E-Thermostat, After 1\/12\/09 — Genuine OEM","description":"\u003cp\u003eThe \u003cstrong\u003ePentair 474061 Tube Sheet Coil Assembly Kit\u003c\/strong\u003e is the genuine OEM heat exchanger for \u003cstrong\u003e400,000 BTU\u003c\/strong\u003e MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters \u003cstrong\u003emanufactured after 1\/12\/2009\u003c\/strong\u003e. It replaces a leaking, corroded or damaged tube sheet coil and restores proper heat transfer.\u003c\/p\u003e\n\n\u003ch2\u003e⚠️ Check Your Heater's Build Date First\u003c\/h2\u003e\n\u003cp\u003eThis kit fits \u003cstrong\u003eonly\u003c\/strong\u003e heaters built \u003cstrong\u003eafter 1\/12\/09\u003c\/strong\u003e (new tub design). For 400K heaters built \u003cstrong\u003ebefore\u003c\/strong\u003e that date, the correct part is \u003cstrong\u003e77707-0234\u003c\/strong\u003e. The two are not interchangeable — check the date on your heater's rating plate before ordering.\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\u003e100% copper tube sheet:\u003c\/strong\u003e Used in models 460736, 460737, SR400NA and SR400LP.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete service kit:\u003c\/strong\u003e Includes copper tube sheet assembly, ignitor, insulation kit, tube of silicone and o-ring set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural gas and propane:\u003c\/strong\u003e Fits both 400NA and 400LP 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 474061\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Tube sheet coil assembly kit (heat exchanger)\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 100% copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e MasterTemp 400NA, 400LP; Sta-Rite Max-E-Therm SR400NA, SR400LP — built after 1\/12\/09\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater Models:\u003c\/strong\u003e 460736, 460737\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Tube sheet assembly, ignitor, insulation kit, silicone, o-ring set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-2009 Equivalent:\u003c\/strong\u003e 77707-0234\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCupro-Nickel HD Version:\u003c\/strong\u003e 77707-0244\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\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. If it predates 12 January 2009, you need \u003cstrong\u003e77707-0234\u003c\/strong\u003e instead. If you are unsure, the serial number will tell you — confirm before ordering, since this part cannot be returned once fitted.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this fit a 300K or 333K heater?\u003c\/h3\u003e\n\u003cp\u003eNo. This is the 400K assembly. The post-2009 300\/333K version is 474060.\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\u003eIs this copper or cupro-nickel?\u003c\/h3\u003e\n\u003cp\u003eCopper. Salt pools and heavy chemical environments often specify the cupro-nickel HD version, 77707-0244.\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.\u003c\/p\u003e\n\u003cdiv class=\"ps4u-faq\"\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow do I size a pool heater?\u003c\/h3\u003e\n\u003cp\u003eHeater sizing follows pool surface area, the temperature rise you want and how exposed the pool is to wind. A larger BTU rating heats faster and cycles less; an undersized heater runs continuously and still struggles on cold nights. Gas heaters also need a gas line and meter capacity that can supply their rated input.\u003c\/p\u003e\n\u003ch3\u003eWhat is the part number for this heater component?\u003c\/h3\u003e\n\u003cp\u003ePentair lists this heater component under part number 474061. Quote 474061 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.\u003c\/p\u003e\n\u003ch3\u003eWhat routine maintenance does a pool heater need?\u003c\/h3\u003e\n\u003cp\u003eKeep water chemistry balanced, because low pH and high calcium hardness are the two most common causes of premature heat exchanger failure. Beyond that: keep the cabinet clear of debris, check for rodent nests before each season, and have the burner and gas train inspected periodically.\u003c\/p\u003e\n\u003ch3\u003eHow do I confirm this fits my equipment?\u003c\/h3\u003e\n\u003cp\u003eMatch the part number stamped on the component you are replacing, or look it up in the parts list for your Pentair equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.\u003c\/p\u003e\n\u003ch3\u003eIs this the complete heater or a replacement part?\u003c\/h3\u003e\n\u003cp\u003eCheck the title and the specification section above. Heater listings and heater component listings share the same part-number format, so confirm whether you are buying a full appliance or a single serviceable component before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty on this heater component?\u003c\/h3\u003e\n\u003cp\u003eIt carries the standard Pentair manufacturer warranty. The terms are set by Pentair, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52911966060861,"sku":"474061","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6741\/8429\/files\/474061-XL.jpg?v=1787341750","url":"https:\/\/poolsupply4u.com\/products\/pentair-474061-tube-sheet-coil-assembly-kit-400k-btu-mastertemp-max-e-therm-after-1-12-09-genuine-oem","provider":"PoolSupply 4U","version":"1.0","type":"link"}