{"product_id":"pentair-77707-0234-mastertemp-heater-replacement-kit","title":"Pentair MasterTemp 400K BTU Heat Exchanger Kit | 77707-0234","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Pentair 77707-0234 is a genuine OEM cupro-nickel tube sheet coil assembly kit (heat exchanger) for Pentair MasterTemp 400NA natural gas and 400LP propane pool and spa heaters. The heat exchanger is where the burner's heat transfers into the pool water. This kit replaces a coil that is leaking, scaled, corroded or no longer heating efficiently, restoring heat transfer and heater performance without replacing the whole heater. Cupro-nickel tubes resist corrosion better than standard copper in demanding pool water conditions.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e⚠️ Important Purchase Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is a major internal heater component. Installation should be done by a qualified pool heater technician following Pentair's service instructions and local codes. This item ships at about 41 lb. Inspect the shipment upon arrival and report damage promptly.\u003c\/p\u003e\n\u003cp\u003eWARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacing a leaking or failed heat exchanger on a MasterTemp 400NA or 400LP heater.\u003c\/li\u003e\n\u003cli\u003eHeaters with scaled or corroded tubes and reduced heating output.\u003c\/li\u003e\n\u003cli\u003eRebuilding an otherwise serviceable 400K MasterTemp heater.\u003c\/li\u003e\n\u003cli\u003ePool heater service technicians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Pentair OEM part, number 77707-0234.\u003c\/li\u003e\n\u003cli\u003eCupro-nickel tube sheet coil assembly for 400K BTU MasterTemp heaters.\u003c\/li\u003e\n\u003cli\u003eFits natural gas (400NA) and propane (400LP) models.\u003c\/li\u003e\n\u003cli\u003eIncludes the coil\/tubesheet sealing O-ring kit.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the factory heat exchanger.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRestores efficient heat transfer and full heating performance.\u003c\/li\u003e\n\u003cli\u003eStops water leaks from a failed coil.\u003c\/li\u003e\n\u003cli\u003eCupro-nickel construction for longer life in pool water.\u003c\/li\u003e\n\u003cli\u003eLower-cost repair than replacing the entire heater.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor Pentair MasterTemp 400NA and 400LP heater water systems. Other BTU sizes and HD models use different heat exchangers. Confirm your heater's model number, serial number and existing part number against the Pentair parts list before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation or Upgrade Context\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTurn off power, gas and circulation, let the heater cool and drain it. Remove the manifold and the old tube sheet coil, install the new 77707-0234 with the supplied O-rings, then reassemble. Restore water flow, check for leaks, and test the heater for proper operation and combustion.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOne cupro-nickel tube sheet coil assembly (heat exchanger)\u003c\/li\u003e\n\u003cli\u003eCoil\/tubesheet sealing O-ring kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHeat exchanger \/ tube sheet coil assembly kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU \/ Model\u003c\/td\u003e\n\u003ctd\u003e77707-0234\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCupro-nickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Heaters\u003c\/td\u003e\n\u003ctd\u003ePentair MasterTemp 400NA, 400LP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eO-ring kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool and spa heaters; residential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e20 x 20 x 20 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e41.4 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e60 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ Barcode\u003c\/td\u003e\n\u003ctd\u003e022315210882\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCovered by a 60-day manufacturer warranty, subject to Pentair’s applicable terms. Contact Pentair for warranty claim instructions; Pool Supply Depot can provide proof of purchase.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCustomer Q\u0026amp;A\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhich heaters does this fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePentair MasterTemp 400NA (natural gas) and 400LP (propane) heaters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it fit the MasterTemp 400 HD?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. HD models use a different heat exchanger kit. Confirm your model before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre O-rings included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The coil\/tubesheet sealing O-ring kit is included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProfessional installation by a qualified pool heater technician is recommended.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48753767416118,"sku":"77707-0234","price":1098.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/pentair-mastertemp-400k-btu-heat-exchanger-kit-77707-0234-6487350.jpg?v=1793919550","url":"https:\/\/poolsupplydepot.net\/products\/pentair-77707-0234-mastertemp-heater-replacement-kit","provider":"Pool Supply Depot","version":"1.0","type":"link"}