Determine if you need Natural Gas or Liquid Propane Gas Logs
Gas logs are available in two fuel types. Natural Gas (NG) and Liquid Propane (LP). You may have a line installed in the fireplace, in which case the gas you burn will be decided. If there isn’t a line, then you will need to decide what fuel type you would like to use.
Check to see which fuel source your appliances currently use.
If you have a Natural Gas heater, dryer, stove, or other appliance, then natural gas is the likely choice. If you have alliances that use propane, then select a gas log set that uses liquid propane. If your home does not have plumbing for either gas type, then check locally to determine which fuel would be best for your area.