First, you need to know your different venting options
Gas Log Sets are usually divided into two categories, Vented and Vent Free. Each venting option has its pros and cons. If you are choosing gas fire products for an existing fireplace, check to see which venting system is currently in place. If you are choosing fireplace products for a new fireplace, please consider the differences between these two options.
Manual Safety Pilot
This system has a safety pilot that is manually lighted and stays lit all the time. Also called a standing pilot, it is similar to a pilot found in a water heater. You can turn the burner on and off manually by reaching inside your fireplace and turning the control knob. You cannot operate this type of system with a remote control, however, you can upgrade later. As the name suggest, this is the safest option.
Remote Control
Remote Control systems include a remote pilot valve assembly. Depending on the remote option you select, you will have the ability to control certain functions of the log set from a remote control. Remote controlled options include basic on/off control as well as variable flame height control.
Match Light
This option is for natural gas only. There is no pilot, only the logs and burner. Your fire is lighted by placing a match or lighter near the burner, then turning on the gas with your key valve. You control your flame height using your key valve which is normally located outside the fireplace either in the wall or floor.