Size is the story of the HGS5657UC. It is a 500 Series freestanding gas range, 36 inches wide, with five sealed burners producing 94,000 BTU, over a 3.4 cu ft oven. That output is well above a 30-inch Bosch gas range, so the gas supply and the hood above it need to be sized for it.
It is also heavy. Pulling it out to clean behind it takes two people, and the first step is closing the gas valve behind the range. The flexible gas connector only tolerates limited movement, so a range that gets dragged around can strain it.
The oven is the other thing we look at. In a wide cavity, the back may cook faster than the front. A small difference is normal, but a clear one points to a door that is not sealing or a fan that is not moving air as it should. We check the seal and the fan first, then the gas supply, before recommending any repair.
Only after closing the gas valve behind it, and preferably with two people. The flexible connector has limited safe movement, and a range this heavy can damage flooring if dragged.
A little variation is normal in a wide oven. A big gap usually means the door seal or convection fan needs attention, and both can be checked.
Yes, gas supply and hood capacity matter, since this range puts out far more heat than a 30-inch model. A supply or hood sized for a smaller appliance is a common cause of poor performance.
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