{"product_id":"heat-exchanger-assembly-250","title":"Hayward Heat Exchanger Assembly, 250","description":"\u003cp\u003eThe Hayward HAXHXA1253 is the heat exchanger assembly for the H-Series 250,000 BTU pool heater, covering both the ED1 and ED2 styles. It is the genuine Hayward part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe heat exchanger is where the heater actually does its work. Burner flame heats the exchanger, pool water is pushed through it by the pump, and the heat crosses from one to the other. Everything else in the cabinet exists to control and support that transfer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy they fail\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWater chemistry. Low pH, high calcium and aggressive water all attack the exchanger from the inside, and undersized plumbing or poor flow lets the burner cook it from the outside. The result is a leak, usually visible as water dripping into the burner tray or pooling in the cabinet while the plumbing outside stays dry.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you fit a new one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConfirm the leak is the exchanger and not the header o-rings or the union connections, which can look similar. Then fix whatever caused the failure. A replacement exchanger in water that is still aggressive will not last any longer than the one it replaced.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48626965381332,"sku":"HAY-151-1253","price":1718.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_af6fd0b2-a0cd-4eb4-8f0e-be9503b14789.jpg?v=1788718566","url":"https:\/\/www.activepoolsupply.com\/products\/heat-exchanger-assembly-250","provider":"Active Pool Supply","version":"1.0","type":"link"}