{"product_id":"tempstar-contactor-for-txh518gka100-1-pole-30a-24v-ships-today","title":"Tempstar Contactor for TXH518GKA100 — 1-Pole 30A 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 1-pole 30A contactor with shunt (part #1172472) is the electrical switch that powers the compressor and outdoor fan on your Tempstar TXH518GKA100. When the thermostat calls for cooling or heating, the 24V control coil pulls the contactor's armature closed, sending line voltage to the compressor and condenser fan motor. The integrated shunt provides a continuous current path so the unit stays energized correctly through the cycle. Contactors are high-wear items: the contacts arc and pit every time they close, and over thousands of cycles they burn, weld shut, or chatter. A failing contactor causes a unit that won't start, a humming or buzzing condenser, or a compressor that runs continuously because the contacts have welded together.\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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1172472\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDefinite Purpose Contactor (with Shunt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil \/ Comfortmaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e1-Pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e30A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eA direct OEM fit for the Tempstar TXH518GKA100 and shared ICP-family chassis sold under Heil, Comfortmaker, and Arcoaire badges. Verify the 1-pole 30A rating, the 24V coil voltage, and the with-shunt configuration against your existing contactor before ordering.\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 disconnect and 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 outdoor unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all line, load, and 24V coil wires before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the wires, release the mounting screws, and lift out the old contactor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new contactor, then reconnect line, load, and 24V coil leads exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a cooling call, 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 and fan won't start.\u003c\/li\u003e\n\u003cli\u003eCompressor runs nonstop because the contacts have welded closed.\u003c\/li\u003e\n\u003cli\u003eVisible pitting, burning, or melted plastic on the contactor.\u003c\/li\u003e\n\u003cli\u003eChattering or intermittent operation when the thermostat calls.\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":63021625999731,"sku":"1172472-GEN","price":24.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048434057587,"sku":"1172472","price":32.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-1pole-1172472_95458c2e-ff6f-4812-b880-fac411b84c1c.jpg?v=1782959469","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-contactor-for-txh518gka100-1-pole-30a-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}