{"product_id":"tempstar-contactor-for-tca424aka4-1-pole-25a-24v-ships-today","title":"Tempstar Contactor for TCA424AKA4 — 1-Pole 25A 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM single-pole definite purpose contactor (part number 1050699) for the Tempstar TCA424AKA4 condensing unit. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. A 24-volt control signal pulls in the coil, closing the high-voltage line contacts and allowing power to flow to the outdoor unit. Rated at 25 amps with a 24V coil, this 1-pole device is built to handle thousands of switching cycles per cooling season. When a contactor fails, the most common symptoms are an outdoor unit that hums but will not start, pitted or burned contacts that arc and chatter, or a system that runs continuously because the contacts have welded shut. Replacing a worn contactor restores reliable starting and protects the compressor from low-voltage and chatter damage.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1050699\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDefinite Purpose Contactor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e1 (Single Pole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e25 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTCA424AKA4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThis contactor is the factory-specified replacement for the Tempstar TCA424AKA4 air conditioner and is shared across the ICP family of brands including Heil, Comfortmaker, and Arcoaire units that use the same control circuit. Because it is a definite-purpose 1-pole 25A 24V device, it is also a direct functional match for many similar residential condensing units of the same tonnage. Always confirm the amp rating, pole count, and coil voltage against the contactor you are removing before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the outdoor disconnect and main breaker, then verify zero voltage at the contactor terminals with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condensing unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wires and their terminal positions before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor, then reconnect each wire to the matching terminal per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan start.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor unit hums or buzzes but the compressor will not start\u003c\/li\u003e\n\u003cli\u003eVisible pitting, burning, or melted plastic on the contact points\u003c\/li\u003e\n\u003cli\u003eChattering or rapid clicking when the system tries to start\u003c\/li\u003e\n\u003cli\u003eSystem runs nonstop because the contacts have welded closed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021663650163,"sku":"1050699-GEN","price":24.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048427274611,"sku":"1050699","price":32.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-1pole-1050699_2e154d80-dc76-4ae1-b410-b6aa3d0355ff.jpg?v=1782959231","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-contactor-for-tca424aka4-1-pole-25a-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}