What's the difference between Natural Gas and Liquid Propane gas logs?

Gas Logs are either made to burn Natural Gas or Liquid Propane. Because these two gases burn differently, the burner systems must be made specifically for the type of gas that you will burn. So you cannot use a Natural Gas burner with Liquid Propane or visa versa. You must make sure you order the correct burner for the type of gas you will be using. The major differences are in the burner orifices and safety pilot choices. For starters, every gas log that is made for Liquid Propane must have a safety pilot or electronic ignition system. You cannot have a burner for LP gas that you can light with a match. Liquid Propane is heavier than air, so if you do not close a manual valve tightly, the gas will puddle inside the fireplace and flow into the room, creating an dangerous situation. Since Natural Gas is lighter than air, if you do not shut a manual valve tightly, most of the gas that leaks will go up the chimney, so it is not as dangerous. This is why LP gas requires a safety pilot, so that you cannot make the mistake of leaving the valve slightly open. A safety pilot will not allow this to happen if used properly. Also, the density of the material covering the burner pan is important in order to get the correct air to fuel mixture and prevent the gas from puddling. Propane gas logs will normally have vermiculite in the pan material where as natural gas logs use a special grade of silica sand.

Which Should I Choose?

Obviously, if you already have gas plumbed to your fireplace, you should choose the type of gas that you already have. If you do not have gas plumbed to the fireplace and you are trying to decide which is best for you, there are several considerations. If your home is equipped with gas, it is usually logical to run a line from the gas main to your home to your fireplace, so you will be using the same type of gas. However, in some cases where there is natural gas in a home, it may be more feasible to install a propane tank right outside the fireplace. You should consult with your local gas company for advice. Also, it is important that when a gas line is run that the distance from the gas main is considered when calculating the diameter of pipe that needs to be used in order to supply the correct amount of gas pressure. Please it is important to refer to the owners manual of your gas logs before you run the gas line.