Is converting an outdoor grill to natural gas better than using the propane tank?

Richard is right in some aspects. The cost of having the "black pipe" run, and you will not be able to move your grill because it will now be in a fixed position and location. I use my grill often, and don't exchange my tanks. Gas stations, and retailers charge way to much for that service. I go to my local Ag,(gas and oil supplier). The rates there are far less expensive to have your tank filled.