{"product_id":"control-board-for-mrcool-central-air-handler-1st-generation-universal-series-model-mdui18024036","title":"Control Board for MRCOOL Central Air Handler 1st Generation Universal Series – Model MDUI18024036","description":"\u003cp data-start=\"301\" data-end=\"642\"\u003eRestore dependable operation to your system with this \u003cstrong data-start=\"355\" data-end=\"387\"\u003egenuine MRCOOL Control Board\u003c\/strong\u003e, specifically designed for \u003cstrong data-start=\"415\" data-end=\"478\"\u003e1st Generation MRCOOL Universal Series Central Air Handlers\u003c\/strong\u003e. This OEM replacement part is engineered to match original factory specifications, ensuring proper system communication, safe operation, and long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"644\" data-end=\"891\"\u003eIf your air handler is experiencing power issues, error codes, or inconsistent performance, a failing control board may be the cause. Replacing it with the correct \u003cstrong data-start=\"808\" data-end=\"828\"\u003e1st Gen–specific\u003c\/strong\u003e board helps bring your MRCOOL system back to peak performance.\u003c\/p\u003e\n\u003ch3 data-start=\"893\" data-end=\"911\"\u003e✅ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"914\" data-end=\"955\"\u003e\u003cstrong data-start=\"914\" data-end=\"955\"\u003eAuthentic MRCOOL OEM replacement part\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"958\" data-end=\"1031\"\u003eDesigned \u003cstrong data-start=\"967\" data-end=\"1031\"\u003eexclusively for 1st Generation Universal Series air handlers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1034\" data-end=\"1071\"\u003eModel compatibility: \u003cstrong data-start=\"1055\" data-end=\"1071\"\u003eMDUI18024036\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1074\" data-end=\"1135\"\u003eRegulates core air handler functions and system communication\u003c\/li\u003e\n\u003cli data-start=\"1138\" data-end=\"1183\"\u003eFactory-tested for durability and performance\u003c\/li\u003e\n\u003cli data-start=\"1186\" data-end=\"1236\"\u003eDirect-fit replacement — no modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1238\" data-end=\"1275\"\u003eWhy Replace the Control Board?\u003c\/h3\u003e\n\u003cp data-start=\"1276\" data-end=\"1321\"\u003eA malfunctioning control board can result in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1324\" data-end=\"1346\"\u003eSystem not powering on\u003c\/li\u003e\n\u003cli data-start=\"1349\" data-end=\"1380\"\u003eIntermittent heating or cooling\u003c\/li\u003e\n\u003cli data-start=\"1383\" data-end=\"1418\"\u003eCommunication errors or fault codes\u003c\/li\u003e\n\u003cli data-start=\"1421\" data-end=\"1441\"\u003eUnreliable operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1443\" data-end=\"1564\"\u003eInstalling the proper \u003cstrong data-start=\"1465\" data-end=\"1483\"\u003e1st Generation\u003c\/strong\u003e control board ensures correct operation and prevents damage to other components.\u003c\/p\u003e\n\u003ch3 data-start=\"1566\" data-end=\"1586\"\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1589\" data-end=\"1660\"\u003e\u003cstrong data-start=\"1589\" data-end=\"1660\"\u003eMRCOOL Central Air Handler – Universal Series (1st Generation only)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1663\" data-end=\"1767\"\u003eCompatible with \u003cstrong data-start=\"1679\" data-end=\"1695\"\u003eMDUI18024036\u003c\/strong\u003e\u003cbr data-start=\"1695\" data-end=\"1698\"\u003e⚠️ \u003cem data-start=\"1701\" data-end=\"1767\"\u003eNot compatible with 2nd Generation Universal Series air handlers\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1769\" data-end=\"1806\"\u003eWhy Buy from MRCOOL DIY Direct?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1809\" data-end=\"1850\"\u003e\u003cstrong data-start=\"1814\" data-end=\"1850\"\u003eUSA’s most trusted MRCOOL dealer\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1853\" data-end=\"1884\"\u003eGuaranteed genuine MRCOOL parts\u003c\/li\u003e\n\u003cli data-start=\"1887\" data-end=\"1911\"\u003eFast U.S.-based shipping\u003c\/li\u003e\n\u003cli data-start=\"1914\" data-end=\"1945\"\u003eKnowledgeable HVAC support team\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1947\" data-end=\"1969\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul data-start=\"1970\" data-end=\"2044\"\u003e\n\u003cli data-start=\"1970\" data-end=\"2044\"\u003e\n\u003cp data-start=\"1972\" data-end=\"2044\"\u003e(1) MRCOOL Control Board for 1st Generation Universal Series Air Handler\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"175\" data-end=\"212\"\u003e💡Pro Tip – Read Before Ordering\u003c\/h3\u003e\n\u003cp data-start=\"213\" data-end=\"465\"\u003eControl boards are \u003cstrong data-start=\"232\" data-end=\"266\"\u003emodel- and generation-specific\u003c\/strong\u003e. Ordering the incorrect board may result in incompatibility or system damage. Product images may be \u003cstrong data-start=\"367\" data-end=\"422\"\u003estock photos shown for representation purposes only\u003c\/strong\u003e and may not depict the exact board layout.\u003c\/p\u003e\n\u003cp data-start=\"467\" data-end=\"686\"\u003eIf you are unsure which control board your system requires, \u003cstrong data-start=\"527\" data-end=\"582\"\u003econtact MRCOOL DIY Direct before placing your order\u003c\/strong\u003e. Our team is happy to help verify compatibility and ensure you receive the correct part the first time.\u003c\/p\u003e","brand":"MRCOOL DIY Direct","offers":[{"title":"Default Title","offer_id":49176856527075,"sku":"100002067711","price":299.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/8752\/3043\/files\/mrcool-1st-gen-universal-air-handler-control-board-mdui18024036.jpg?v=1780844472","url":"https:\/\/freedomhvacsupply.com\/products\/control-board-for-mrcool-central-air-handler-1st-generation-universal-series-model-mdui18024036","provider":"Freedom HVAC Supply","version":"1.0","type":"link"}