{"product_id":"30-5-mfd-370-440v-dual-run-capacitor-universal-ac-compressor-fan","title":"30+5 MFD 370\/440V Dual Run Capacitor — Universal AC Compressor \u0026 Fan","description":"\u003cdiv class=\"product-content\"\u003e\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003e\u003cstrong\u003e30+5 MFD dual run capacitor\u003c\/strong\u003e — the larger 30 MFD side powers the compressor, the smaller 5 MFD side powers the condenser fan motor. One capacitor replaces two separate run capacitors, saving space and simplifying wiring.\u003c\/p\u003e\n\u003cp\u003eRated 370\/440V for all residential AC systems. Three terminals: \u003cstrong\u003eHERM\u003c\/strong\u003e (hermetic\/compressor), \u003cstrong\u003eFAN\u003c\/strong\u003e (condenser fan motor), and \u003cstrong\u003eCOM\u003c\/strong\u003e (common — connects to contactor).\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCapacitance: 30+5 MFD (±6%)\u003c\/li\u003e\n\u003cli\u003eVoltage: 370\/440 VAC 50\/60Hz\u003c\/li\u003e\n\u003cli\u003eTerminals: 3-prong — HERM, FAN, COM\u003c\/li\u003e\n\u003cli\u003eShape: Round aluminum canister\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTerminal Wiring Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHERM\u003c\/strong\u003e → Compressor start winding (usually brown or yellow wire)\u003cbr\u003e\n\u003cstrong\u003eFAN\u003c\/strong\u003e → Condenser fan motor (usually brown wire from motor)\u003cbr\u003e\n\u003cstrong\u003eCOM\u003c\/strong\u003e → Common — connects to contactor (L2 side)\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eHow do I know which side is the compressor vs fan?\u003c\/h4\u003e\n\u003cp\u003eThe LARGER MFD value (30) is always the compressor side. The SMALLER value (5) is the fan motor side. They are labeled on the terminals — HERM goes to the compressor, FAN goes to the fan motor, COM goes to the contactor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eCan I replace a dual cap with two single caps?\u003c\/h4\u003e\n\u003cp\u003eYes — you can use a 30 MFD single cap for the compressor and a 5 MFD single cap for the fan motor. Wire the compressor cap between HERM and COM, and the fan cap between FAN and COM. This is a common emergency repair when the exact dual value isn't available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eWhat causes a dual run capacitor to fail?\u003c\/h4\u003e\n\u003cp\u003eHeat is the #1 killer. Capacitors degrade faster in hot environments — the outdoor condensing unit in Texas summer heat accelerates aging. Electrical surges, short cycling, and simply age (typical life: 5-15 years) also cause failure. Replace proactively if the unit is 10+ years old.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Guaranteed\u003c\/strong\u003e — if this capacitor doesn't work in your system, we'll send the right one or refund you.\u003c\/p\u003e\n\u003cp\u003eShips same-day from Houston, TX on orders before 3PM CST.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63008715866483,"sku":"NHVAC-CAP-KQJJA0","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/714Xs5je9rL._AC_SL1500.jpg?v=1782075573","url":"https:\/\/nationalhvacparts.com\/products\/30-5-mfd-370-440v-dual-run-capacitor-universal-ac-compressor-fan","provider":"National HVAC Parts","version":"1.0","type":"link"}