{"product_id":"suburban-525024-sail-switch-furnace-low-air-flow-switch-replaces-230509-nt-sf-series","title":"Suburban 525024 Sail Switch – Furnace Low Air Flow Switch (Replaces 230509, NT \u0026 SF Series)","description":"\u003ch2 data-section-id=\"53drpp\" data-start=\"262\" data-end=\"283\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"284\" data-end=\"561\"\u003eThe \u003cstrong data-start=\"288\" data-end=\"319\"\u003eSuburban 525024 Sail Switch\u003c\/strong\u003e (formerly part \u003cstrong data-start=\"335\" data-end=\"345\"\u003e230509\u003c\/strong\u003e) is a low air flow safety switch designed for a wide range of \u003cstrong data-start=\"408\" data-end=\"449\"\u003eSuburban NT and SF series RV furnaces\u003c\/strong\u003e. This switch ensures the blower is moving sufficient air before allowing ignition, preventing unsafe operation.\u003c\/p\u003e\n\u003cp data-start=\"563\" data-end=\"770\"\u003eIf your furnace blower runs but the burner will not ignite, the sail switch is one of the \u003cstrong data-start=\"653\" data-end=\"675\"\u003emost common causes\u003c\/strong\u003e. Replacing a faulty sail switch can quickly restore proper furnace function and reliable heat.\u003c\/p\u003e\n\u003cp data-start=\"772\" data-end=\"912\"\u003eWith broad compatibility across multiple Suburban furnace models, the 525024 is one of the most versatile and frequently used sail switches.\u003c\/p\u003e\n\u003chr data-start=\"914\" data-end=\"917\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"919\" data-end=\"936\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"937\" data-end=\"1382\"\u003e\n\u003cli data-section-id=\"10hbjc7\" data-start=\"937\" data-end=\"1003\"\u003eReplaces \u003cstrong data-start=\"948\" data-end=\"972\"\u003eSuburban part 230509\u003c\/strong\u003e (updated part number 525024)\u003c\/li\u003e\n\u003cli data-section-id=\"1pmi0ru\" data-start=\"1004\" data-end=\"1059\"\u003eDesigned for \u003cstrong data-start=\"1019\" data-end=\"1057\"\u003eSuburban NT and SF series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16o315q\" data-start=\"1060\" data-end=\"1104\"\u003eLow air flow safety switch (sail switch)\u003c\/li\u003e\n\u003cli data-section-id=\"tnk1hr\" data-start=\"1105\" data-end=\"1147\"\u003eEnsures proper airflow before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"gfghxh\" data-start=\"1148\" data-end=\"1203\"\u003eHelps prevent ignition failure and unsafe operation\u003c\/li\u003e\n\u003cli data-section-id=\"sza7hf\" data-start=\"1204\" data-end=\"1255\"\u003eCommon fix for “blower runs but no heat” issues\u003c\/li\u003e\n\u003cli data-section-id=\"e48szj\" data-start=\"1256\" data-end=\"1310\"\u003eDirect OEM replacement for proper fit and function\u003c\/li\u003e\n\u003cli data-section-id=\"1nj7rf6\" data-start=\"1311\" data-end=\"1335\"\u003eSingle switch design\u003c\/li\u003e\n\u003cli data-section-id=\"tkyouu\" data-start=\"1336\" data-end=\"1382\"\u003eDurable construction for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1384\" data-end=\"1387\"\u003e\n\u003ch2 data-section-id=\"1qhk4i3\" data-start=\"1389\" data-end=\"1408\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1409\" data-end=\"1645\"\u003e\n\u003cli data-section-id=\"1f1i5nm\" data-start=\"1409\" data-end=\"1432\"\u003ePart Number: 525024\u003c\/li\u003e\n\u003cli data-section-id=\"1nyydc\" data-start=\"1433\" data-end=\"1453\"\u003eReplaces: 230509\u003c\/li\u003e\n\u003cli data-section-id=\"pflcp1\" data-start=\"1454\" data-end=\"1505\"\u003eProduct Type: Sail switch \/ low air flow switch\u003c\/li\u003e\n\u003cli data-section-id=\"1guunh4\" data-start=\"1506\" data-end=\"1531\"\u003eConfiguration: Single\u003c\/li\u003e\n\u003cli data-section-id=\"17sp7x\" data-start=\"1532\" data-end=\"1582\"\u003eFunction: Airflow verification before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"inql07\" data-start=\"1583\" data-end=\"1645\"\u003eApplication: Suburban NT, SF, and select P-series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1647\" data-end=\"1650\"\u003e\n\u003ch2 data-section-id=\"yzynuf\" data-start=\"1652\" data-end=\"1682\"\u003eCompatible Furnace Models\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1mqc26h\" data-start=\"1684\" data-end=\"1708\"\u003eSuburban NT Series\u003c\/h3\u003e\n\u003cul data-start=\"1709\" data-end=\"1827\"\u003e\n\u003cli data-section-id=\"17h0g2g\" data-start=\"1709\" data-end=\"1718\"\u003eNT-25\u003c\/li\u003e\n\u003cli data-section-id=\"17h18qk\" data-start=\"1719\" data-end=\"1728\"\u003eNT-30\u003c\/li\u003e\n\u003cli data-section-id=\"17h15dk\" data-start=\"1729\" data-end=\"1738\"\u003eNT-34\u003c\/li\u003e\n\u003cli data-section-id=\"17h17uh\" data-start=\"1739\" data-end=\"1748\"\u003eNT-35\u003c\/li\u003e\n\u003cli data-section-id=\"dzvoeq\" data-start=\"1749\" data-end=\"1759\"\u003eNT-35K\u003c\/li\u003e\n\u003cli data-section-id=\"dzuwq9\" data-start=\"1760\" data-end=\"1770\"\u003eNT-30M\u003c\/li\u003e\n\u003cli data-section-id=\"dzs0j9\" data-start=\"1771\" data-end=\"1781\"\u003eNT-34M\u003c\/li\u003e\n\u003cli data-section-id=\"dzuv1r\" data-start=\"1782\" data-end=\"1792\"\u003eNT-30S\u003c\/li\u003e\n\u003cli data-section-id=\"dzrs4r\" data-start=\"1793\" data-end=\"1803\"\u003eNT-34S\u003c\/li\u003e\n\u003cli data-section-id=\"zon7fj\" data-start=\"1804\" data-end=\"1815\"\u003eNT-30SP\u003c\/li\u003e\n\u003cli data-section-id=\"zltj6j\" data-start=\"1816\" data-end=\"1827\"\u003eNT-34SP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1829\" data-end=\"1832\"\u003e\n\u003ch3 data-section-id=\"1rzwksj\" data-start=\"1834\" data-end=\"1857\"\u003eSuburban P Series\u003c\/h3\u003e\n\u003cul data-start=\"1858\" data-end=\"1867\"\u003e\n\u003cli data-section-id=\"fqgpx\" data-start=\"1858\" data-end=\"1867\"\u003eP-30S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1869\" data-end=\"1872\"\u003e\n\u003ch3 data-section-id=\"dmdozq\" data-start=\"1874\" data-end=\"1898\"\u003eSuburban SF Series\u003c\/h3\u003e\n\u003cul data-start=\"1899\" data-end=\"1982\"\u003e\n\u003cli data-section-id=\"1b25u1e\" data-start=\"1899\" data-end=\"1908\"\u003eSF-20\u003c\/li\u003e\n\u003cli data-section-id=\"1b25wlz\" data-start=\"1909\" data-end=\"1918\"\u003eSF-25\u003c\/li\u003e\n\u003cli data-section-id=\"1b283lf\" data-start=\"1919\" data-end=\"1928\"\u003eSF-30\u003c\/li\u003e\n\u003cli data-section-id=\"1b284hi\" data-start=\"1929\" data-end=\"1938\"\u003eSF-35\u003c\/li\u003e\n\u003cli data-section-id=\"1pc07ys\" data-start=\"1939\" data-end=\"1949\"\u003eSF-20F\u003c\/li\u003e\n\u003cli data-section-id=\"1pc3vxt\" data-start=\"1950\" data-end=\"1960\"\u003eSF-25F\u003c\/li\u003e\n\u003cli data-section-id=\"1pe2w2d\" data-start=\"1961\" data-end=\"1971\"\u003eSF-30F\u003c\/li\u003e\n\u003cli data-section-id=\"1pe210w\" data-start=\"1972\" data-end=\"1982\"\u003eSF-35F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1984\" data-end=\"1987\"\u003e\n\u003ch2 data-section-id=\"r0ub25\" data-start=\"1989\" data-end=\"2022\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cul data-start=\"2023\" data-end=\"2197\"\u003e\n\u003cli data-section-id=\"tse6ah\" data-start=\"2023\" data-end=\"2096\"\u003eDesigned for a wide range of \u003cstrong data-start=\"2054\" data-end=\"2094\"\u003eNT, SF, and select P-series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nhx97i\" data-start=\"2097\" data-end=\"2142\"\u003eVerify your furnace model before ordering\u003c\/li\u003e\n\u003cli data-section-id=\"1ka4vrg\" data-start=\"2143\" data-end=\"2197\"\u003eNot all Suburban furnaces use the same sail switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2199\" data-end=\"2202\"\u003e\n\u003ch2 data-section-id=\"v3w05w\" data-start=\"2204\" data-end=\"2249\"\u003eWhen Should You Replace the Sail Switch?\u003c\/h2\u003e\n\u003cp data-start=\"2250\" data-end=\"2304\"\u003eYou may need the 525024 sail switch if your furnace:\u003c\/p\u003e\n\u003cul data-start=\"2305\" data-end=\"2500\"\u003e\n\u003cli data-section-id=\"5l0agf\" data-start=\"2305\" data-end=\"2355\"\u003eBlower fan runs but the burner will not ignite\u003c\/li\u003e\n\u003cli data-section-id=\"y6bazl\" data-start=\"2356\" data-end=\"2398\"\u003eHas no spark or ignition after startup\u003c\/li\u003e\n\u003cli data-section-id=\"nbm24g\" data-start=\"2399\" data-end=\"2432\"\u003eCycles without producing heat\u003c\/li\u003e\n\u003cli data-section-id=\"1ajyas0\" data-start=\"2433\" data-end=\"2457\"\u003eWorks intermittently\u003c\/li\u003e\n\u003cli data-section-id=\"o5csiu\" data-start=\"2458\" data-end=\"2500\"\u003eHas dust or debris restricting airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2502\" data-end=\"2578\"\u003eThe sail switch is one of the \u003cstrong data-start=\"2532\" data-end=\"2577\"\u003emost commonly replaced furnace components\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2580\" data-end=\"2583\"\u003e\n\u003ch2 data-section-id=\"dslo8q\" data-start=\"2585\" data-end=\"2611\"\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cul data-start=\"2612\" data-end=\"2826\"\u003e\n\u003cli data-section-id=\"1rbj8zt\" data-start=\"2612\" data-end=\"2667\"\u003eEnsures safe furnace operation by verifying airflow\u003c\/li\u003e\n\u003cli data-section-id=\"jtqjtn\" data-start=\"2668\" data-end=\"2718\"\u003ePrevents ignition when airflow is insufficient\u003c\/li\u003e\n\u003cli data-section-id=\"2w83e3\" data-start=\"2719\" data-end=\"2763\"\u003eRestores proper furnace startup sequence\u003c\/li\u003e\n\u003cli data-section-id=\"x7u767\" data-start=\"2764\" data-end=\"2826\"\u003eSimple and cost-effective repair for common furnace issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2828\" data-end=\"2831\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2833\" data-end=\"2841\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"2843\" data-end=\"2917\"\u003e\u003cstrong data-start=\"2843\" data-end=\"2875\"\u003eWhat part does this replace?\u003c\/strong\u003e\u003cbr data-start=\"2875\" data-end=\"2878\"\u003eThis replaces \u003cstrong data-start=\"2892\" data-end=\"2916\"\u003eSuburban part 230509\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2919\" data-end=\"3020\"\u003e\u003cstrong data-start=\"2919\" data-end=\"2950\"\u003eWhat does a sail switch do?\u003c\/strong\u003e\u003cbr data-start=\"2950\" data-end=\"2953\"\u003eIt verifies that the blower is moving air before allowing ignition.\u003c\/p\u003e\n\u003cp data-start=\"3022\" data-end=\"3129\"\u003e\u003cstrong data-start=\"3022\" data-end=\"3056\"\u003eIs this a common failure part?\u003c\/strong\u003e\u003cbr data-start=\"3056\" data-end=\"3059\"\u003eYes, it is one of the most common causes of “blower runs but no heat”.\u003c\/p\u003e\n\u003cp data-start=\"3131\" data-end=\"3224\"\u003e\u003cstrong data-start=\"3131\" data-end=\"3173\"\u003eWill this fit both NT and SF furnaces?\u003c\/strong\u003e\u003cbr data-start=\"3173\" data-end=\"3176\"\u003eYes, it fits many NT and SF models listed above.\u003c\/p\u003e\n\u003cp data-start=\"3226\" data-end=\"3352\"\u003e\u003cstrong data-start=\"3226\" data-end=\"3256\"\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"3256\" data-end=\"3259\"\u003eInstallation is typically straightforward, but ensure power is disconnected before servicing.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47952029516017,"sku":null,"price":16.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/525024.jpg?v=1774383941","url":"https:\/\/rvfurnaceguys.com\/products\/suburban-525024-sail-switch-furnace-low-air-flow-switch-replaces-230509-nt-sf-series","provider":"RV Furnace Guys","version":"1.0","type":"link"}