Gas Log FAQs

  • Is the soot build up on my vented logs normal?
    Yes. Most vented log sets do soot. Since the flames touch the logs, soot will build up on them during the combustion process.
  • How do I clean the soot off the logs or must I leave it on them?
    Soot on the logs just adds realism. But, if you want to remove it, you can. A small soft bristle point brush works well or vacuum with a soft brush attachment.
  • Must I have the damper fully opened?
    Log sets differ from one model number to another. Check in your installation instructions for the venting requirements.
  • Since I do not have adequate draft to burn firewood, can I use gas logs instead?
    No. You can use vent-free gas logs but not vented logs. Vented logs require a working flue, the same as burning firewood.
  • The pilot will not stay lit or goes out when the burner is turned on.
    If the pilot flame is still large enough to heat the tip of the thermocouple, then the pilot needs to be cleaned or the thermocouple is burned out and needs to be replaced.
  • Do I ever need to replace the glowing embers in my log set?
    They should never need replacing unless they get wet. Should the embers or sand (if there is sand underneath them) get wet, then they need replacing.
  • Can I use a blower with my vented logs?
    No. Very few vented logs are certified for use with a blower. Heatmaster vented logs are not. However, if your fireplace has a built-in fan system, this can be used.
  • Can my vented gas logs be converted to vent-free?
    No. Vented and vent-free logs are different in many ways. Heatmaster vent-free gas logs are also certified as vented (with the exception of the thermostat models), but the vented logs must always be vented.
  • Can I add a remote to my gas logs?
    In order to use a remote starting system, the unit must have either a millivolt, rotary or IPI valve system.
  • What is the difference between vented and vent-free (un-vented) gas log sets?
    Vent-free logs are rated as a heating appliance and do not require venting to the outside. Vented logs are rated as decorative and require venting to the outside. Heatmaster vent-free logs are certified to use as vent-free or vented.
  • What are the advantages of vent-free log sets?
    They normally use less gas than vented logs and produce more heat since no venting is required. They can be used in homes that do not have a masonry fireplace.
  • Can I install vent-free gas logs in my masonry fireplace?
    Yes. They can be vented or the damper can be closed and be burned as vent-free for an excellent source of heat.
  • Can I move or change the log position in my vent-free gas log system?
    No. Each log has a specific position and is certified by a testing agency to be used in this position. Refer to the installation instructions for the correct set up of your log set.
  • Should I turn off the pilot when not burning the gas logs?
    This is not necessary. Pilot flames burn very little gas and serve as a convenience for easy relighting of the gas logs. If using a remote control or thermostat model, it would be necessary to leave the pilot on for the log set to function as it is designed.
  • Do vent-free gas logs require any type of maintenance?
    Yes. Gas logs should be serviced at least annually by a qualified service person.
  • Can I add the glowing embers to my vent-free gas logs?
    If the log set did not come with them, refer to your instruction manual or the call the manufacturer to be certain. Vent-free logs must be designed and certified to use glowing embers.
  • If vent-free logs are safe, why are they not allowed in a bedroom fireplace?
    Vent-free logs can be burned in a bedroom as long as they do not exceed 10,000 BTU maximum input. Check local building codes.
  • Must you use a hood on your fireplace when burning vent-free gas logs?
    Hoods are designed to deflect heat from wood such as a mantel. Check the installation instructions for your log sets to see if the mantel height requires you to install a hood.