If you are planning on installing an outdoor fire feature, or perhaps converting your wood-burning fire pit to a gas-fueled option, you'll need to decide if you want to use natural gas or propane. What many people don't know is that there is a big difference between the two. So much, in fact, that additional ventilation and an air mixer are required in order to ensure that your propane accent is operating properly. Fireplace Doors Online is here to explain the difference between the two gasses, and why it is so important for propane to be properly aerated!