{"product_id":"rheem-42-100491-09-relay","title":"Rheem 42-100491-09 Start Relay","description":"\u003cp\u003eThe \u003cstrong\u003eRheem 42-100491-09 Start Relay\u003c\/strong\u003e is a Rheem relay for HVAC repair and replacement work. Use it when the part number \u003cstrong\u003e42-100491-09\u003c\/strong\u003e and the listed specifications match the equipment being serviced.\u003c\/p\u003e\n\u003cp\u003e42-100491-09 is an official OEM Start Relay for Rheem HVAC equipment.\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Replacement Part\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eFitment Notes\u003c\/h3\u003e\u003cp\u003eCaptured equipment fit data references models including RAPL-018JAZ\/Serial: 7707, RAPL-018JEZ\/Serial: 7707, RAPL-024JAZ\/Serial: 7708, RAPL-024JEZ\/Serial: 7708, RAPL-030JAZ\/Serial: 7709, RAPL-030JEZ\/Serial: 7709, RAPL-036JAZ\/Serial: 7710, RAPL-036JEZ\/Serial: 7710, RAPL-042JAZ\/Serial: 7711, RAPL-042JEZ\/Serial: 7711, RAPL-048JAZ\/Serial: 7712, RAPL-048JEZ\/Serial: 7712. Verify the complete unit model and service manual before installation.\u003c\/p\u003e\n\u003ch3\u003eExpert Verdict\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eReviewed by the SuperArbor Pro Desk:\u003c\/strong\u003e choose this part when the existing component label and unit documentation match 42-100491-09 and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch4\u003eWhat is the Rheem 42-100491-09 used for?\u003c\/h4\u003e\u003cp\u003eIt is a relay for compatible Rheem HVAC equipment. Match the part number 42-100491-09 and the equipment service literature before ordering or installing.\u003c\/p\u003e\u003ch4\u003eWhich specs should I verify before purchase?\u003c\/h4\u003e\u003cp\u003eVerify the spec set shown for this part: Product Type: Replacement Part. The replacement should match the existing component and the unit documentation.\u003c\/p\u003e\u003ch4\u003eHow do I confirm this is the right replacement?\u003c\/h4\u003e\u003cp\u003eCompare the part number 42-100491-09, the relay description, and any unit model references with the original component and the service manual.\u003c\/p\u003e\u003ch4\u003eWhich equipment models are referenced in the fit data?\u003c\/h4\u003e\u003cp\u003eCaptured fit data references models such as RAPL-018JAZ\/Serial: 7707, RAPL-018JEZ\/Serial: 7707, RAPL-024JAZ\/Serial: 7708, RAPL-024JEZ\/Serial: 7708, RAPL-030JAZ\/Serial: 7709, RAPL-030JEZ\/Serial: 7709. Treat this as a fitment aid and verify the complete model list in the equipment documentation.\u003c\/p\u003e\u003ch4\u003eWho should install this HVAC component?\u003c\/h4\u003e\u003cp\u003eA qualified HVAC technician should install and test the relay. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.\u003c\/p\u003e\n\n\u003ch3\u003eSafety and Installation Notes\u003c\/h3\u003e\n\u003cp\u003eDisconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.\u003c\/p\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":53097348923759,"sku":"42-100491-09","price":18.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/42-100491-09-3.jpg?v=1781004086","url":"https:\/\/superarbor.io\/products\/rheem-42-100491-09-relay","provider":"Super Arbor","version":"1.0","type":"link"}