IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman B4022700 3-inch In-Shot Burner is a genuine OEM gas burner for the GMTH090-5B furnace. In-shot burners meter and direct the air/gas mixture into each heat-exchanger tube, producing the crisp blue flame that carries heat into the exchanger. A rusted, cracked, or clogged burner causes delayed ignition, roll-out, yellow flame, or uneven heating and should be replaced as a set for consistent combustion.
The OEM B4022700 is machined to the exact port size and venturi length Goodman rated for this furnace's BTU input, so the flame lights smoothly and burns clean at the factory orifice. Generic burners can shift the air/fuel ratio, causing sooting, noise, or nuisance flame-sensor faults. For safe, efficient combustion, match the factory burner.
Moderate (3 of 5). Turn off gas and power, remove the burner-box cover and manifold, slide out the old burners, and install the replacements onto the same orifice locations. Roughly 30–45 minutes. Confirm correct flame appearance and check for gas leaks with soap solution before returning to service.
Genuine Goodman burners keep your GMTH090-5B firing clean and safe.