Aside from keeping the warm air from escaping, the doors act to keep the hearth clean just as a fireplace screen used to do in the olden days. With the doors closed, ashes and embers don't scatter about the room, keeping the carpet or rug clean and scorch-free. The doors also have built in devices that divert air towards the bottom of the fireplace. These vents make the fire burn brighter and easier to light.
More than one gas fireplace is designed to hang from the wall like a painting. Can you believe that? You can warm the room with a stylish wall-hanging that has a real flame, and which doesn't require a vent. And along with the heat emanating from it, it will also emanate tranquility, style and beauty. Some also have what they call disappearing glass, which has an solid glass cover that turns transparent when you ignite the flame.