{"product_id":"raypak-005254f-tube-bundle","title":"Raypak 005254F – Tube Bundle Assembly – 335 Heater Series","description":"\u003ch2\u003eRaypak 005254F – Tube Bundle Assembly – 335 Heater Series\u003c\/h2\u003e\u003cp\u003eIf your 335 heater is firing normally but taking too long to heat, leaking internally, or leaving scale and moisture inside the cabinet, the tube bundle assembly is one of the first major components to inspect. This is a common failure point when a Raypak heater is not working efficiently even though the burner side still looks functional.\u003c\/p\u003e\u003cp\u003eThis tube bundle assembly carries water through the heat transfer section of the heater so combustion heat can move into the system. When the bundle becomes scaled, restricted, or starts leaking, heater output drops and internal damage can spread. Replacing it restores the core water-side heating path inside the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeater runs but water temperature rises slowly\u003c\/li\u003e\n\u003cli\u003eInternal leakage develops around the exchanger section\u003c\/li\u003e\n\u003cli\u003eScale or corrosion is found during teardown\u003c\/li\u003e\n\u003cli\u003eRaypak heater troubleshooting points to heat transfer failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat this part does:\u003c\/strong\u003e It forms the internal tube bundle assembly that transfers heat into the circulating water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Raypak 335 heater series. Confirm with your model number before ordering.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 005254F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Tube bundle assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 335 heater series\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM Value:\u003c\/strong\u003e A genuine Raypak replacement part helps maintain the intended fit and internal water path. Major exchanger repairs go better when the bundle assembly matches the original heater configuration.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.aquaterrabackyard.com\/pages\/contact-us\" target=\"_blank\"\u003e\u003cstrong\u003eNeed help confirming compatibility? Contact us ?\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.aquaterrabackyard.com\/collections\/raypak\" target=\"_blank\"\u003e\u003cstrong\u003eShop all Raypak parts ?\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Raypak","offers":[{"title":"Default Title","offer_id":51842866217234,"sku":"005254F","price":772.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/medium_e9957731-6969-4271-90e3-ba71609aeeff.jpg?v=1767391257","url":"https:\/\/www.aquaterrabackyard.com\/products\/raypak-005254f-tube-bundle","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}