{"product_id":"controller-two-stage-hot-surface-ignition-ecm-meets-csa-21m51u-843","title":"Controller, Two Stage Hot Surface Ignition ECM, Meets CSA","description":"\u003cstyle\u003e\n  :root {\n    --hvx-golden: #FAA819;\n    --hvx-slate: #262626;\n    --hvx-ivory: #F4F1E6;\n    --hvx-border: #e2e0d5;\n    --hvx-card-bg: #ffffff;\n  }\n  .hvx-desc { font-family: \"Articulat CF\", system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", sans-serif; color: var(--hvx-slate); line-height: 1.6; background: var(--hvx-ivory); padding: 18px 18px 20px; border-radius: 16px; }\n  .hvx-desc-header { border-radius: 14px; padding: 14px 16px; background: linear-gradient(120deg, var(--hvx-golden), var(--hvx-slate)); color: #fff; margin: 0 0 16px; display: flex; flex-direction: column; gap: 6px; box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22); }\n  .hvx-desc-eyebrow { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.8; }\n  .hvx-desc-title { margin: 0; font-family: \"Anton\", \"Impact\", system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", sans-serif; font-size: 20px; line-height: 1.2; }\n  .hvx-desc-card { border: 1px solid var(--hvx-border); border-radius: 14px; background: var(--hvx-card-bg); padding: 16px 18px 18px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06); margin: 14px 0; }\n  .hvx-section-title { margin: 0 0 10px; font-family: \"Anton\",\"Impact\",system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",sans-serif; font-size: 17px; letter-spacing: .08em; text-transform: uppercase; color: var(--hvx-slate); display: inline-flex; align-items: center; gap: 8px; }\n  .hvx-section-title::after { content: \"\"; flex: 1; height: 2px; border-radius: 999px; background: linear-gradient(90deg, var(--hvx-golden), transparent); opacity: .9; }\n  .hvx-text { margin: 8px 0; font-size: 14px; }\n  .hvx-table-wrap { width: 100%; overflow-x: auto; }\n  .hvx-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 520px; }\n  .hvx-th,.hvx-td { border: 1px solid var(--hvx-border); padding: 9px 11px; text-align: left; vertical-align: top; }\n  .hvx-th { background: #f7f3e8; color: var(--hvx-slate); width: 26ch; font-weight: 600; text-transform: capitalize; }\n  .hvx-list { margin: 6px 0 0; padding-left: 20px; font-size: 14px; }\n  .hvx-li { margin-bottom: 6px; }\n  .hvx-link { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; color: var(--hvx-slate); }\n  .hvx-link:hover { color: var(--hvx-golden); }\n  .hvx-models { font-size: 13px; line-height: 1.55; }\n  @media (max-width: 768px){ .hvx-desc{padding:14px 12px 16px;border-radius:12px}.hvx-desc-header{padding:12px;border-radius:12px}.hvx-desc-title{font-size:18px}.hvx-desc-card{padding:14px;margin:10px 0} }\n\u003c\/style\u003e\u003cdiv class=\"hvx-desc\"\u003e\n\u003cdiv class=\"hvx-desc-header\"\u003e\n\u003cdiv class=\"hvx-desc-eyebrow\"\u003eHVAC Replacement Part | Heating Elements | SKU 21M51U-843\u003c\/div\u003e\n\u003cdiv class=\"hvx-desc-title\"\u003eController, Two Stage Hot Surface Ignition ECM, Meets CSA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hvx-desc-card\"\u003e\n\u003ch2 class=\"hvx-section-title\"\u003eProduct Description\u003c\/h2\u003e\n\u003cp class=\"hvx-text\"\u003eThe Controller, Two Stage Hot Surface Ignition ECM, Meets CSA is an HVAC replacement part. It is used for heating elements service and replacement work. Key details include Two Stage Hot Surface Ignition ECM and Meets CSA.\u003c\/p\u003e\n\u003cp class=\"hvx-text\"\u003eOrder by part number 21M51U-843 and compare it with the label on your existing component before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hvx-desc-card\"\u003e\n\u003ch2 class=\"hvx-section-title\"\u003eTechnical Specifications - 21M51U-843\u003c\/h2\u003e\n\u003cdiv class=\"hvx-table-wrap\"\u003e\u003ctable class=\"hvx-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"hvx-th\"\u003ePart Number\u003c\/th\u003e\n\u003ctd class=\"hvx-td\"\u003e21M51U-843\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"hvx-th\"\u003eFull SKU\u003c\/th\u003e\n\u003ctd class=\"hvx-td\"\u003eMHVC-RES-PEC-21M51U-843\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"hvx-th\"\u003ePart Type\u003c\/th\u003e\n\u003ctd class=\"hvx-td\"\u003eHeating Elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"hvx-th\"\u003eCategory\u003c\/th\u003e\n\u003ctd class=\"hvx-td\"\u003eElectrical and Controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Motili","offers":[{"title":"Default Title","offer_id":44179597590571,"sku":"21M51U-843","price":587.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/5647\/1339\/files\/IMG-21M51U-843.png?v=1781047490","url":"https:\/\/hvacsupplies.com\/products\/controller-two-stage-hot-surface-ignition-ecm-meets-csa-21m51u-843","provider":"HVACSupplies.com","version":"1.0","type":"link"}