An HPC Propane Conversion Kit is a necessary part for fireplaces and fire pits that run on propane. What makes a propane conversion kit necessary? Propane requires a significant amount of air input to allow for effective combustion because it burns extremely differently from natural gas by nature. Propane, on the other hand, burns much more dirty than natural gas and produces less black smoke or soot. With the help of this propane fire pit conversion kit, the gas may burn cleanly without producing soot or black smoke by enabling more air to combine with it and dilute it.