{"product_id":"oem-goodman-3-in-shot-gas-burner-for-gmth045-3b-b4022700","title":"OEM Goodman 3\" In-Shot Gas Burner for GMTH045-3B — B4022700","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4022700 3-Inch In-Shot Burner\u003c\/strong\u003e is a genuine OEM gas burner designed for the \u003cstrong\u003eGMTH045-3B\u003c\/strong\u003e furnace and related Goodman\/Amana models. Each in-shot burner shoots the air-fuel mixture directly into a single heat-exchanger tube, where it is ignited to produce clean, stable combustion. Over time burners can rust, clog with debris, or develop flame-rollout and delayed-ignition problems — replacing the affected burner (or the full set) restores a crisp, even blue flame and reliable ignition.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B4022700\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e In-shot \/ single-port gas burner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e One burner per heat-exchanger tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMTH045-3B and related furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBurner geometry, venturi shape, and mounting slot must match your manifold and orifice spacing to keep the flame aligned in the heat-exchanger tube. The OEM B4022700 is dimensioned exactly for this furnace, ensuring proper flame carryover and combustion. Mismatched aftermarket burners can cause rollout, poor ignition, or sooting.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Shut off the gas and power, remove the burner-box cover, slide the old burner off its manifold orifice, and seat the new one in the same slot. When replacing burners it is good practice to inspect the matching orifice and flame sensor. Verify a clean blue flame after restart.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058165727603,"sku":"GOODMAN-12533","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-3-in-shot-gas-burner-for-gmth045-3b-b4022700","provider":"National HVAC Parts","version":"1.0","type":"link"}