The gas-to-air ratio on a Heat-n-Glo fireplace determines flame intensity and color over and around the faux logs used to simulate a real, wood-burning fire. This mixture of air and fuel adjusts by turning the valve inside the control panel of the fireplace. The valve works with a setscrew that regulates the amount of air flowing with the natural gas used to operate the Heat-n-Glo fireplace. Adjusting the air-to-gas ratio takes only a few minutes using a flat-blade screwdriver.
Light the Heat-n-Glo fireplace. If your model operates with a remote control, press the "Flame" button on the remote. For models with a wall switch, dial the "On/Off" switch to "On."
Remove the screws from the control panel plate on the right-hand side of the Heat-n-Glo to take off the plate. Locate the valve in the upper-right corner inside the control box.
Insert a flat-blade screwdriver into the setscrew on the right side of the valve and twist counterclockwise to increase the gas-to-air ratio. Turn the setscrew clockwise to reduce air flow mixing with gas. Ask a friend to describe the flame color and intensity in your Heat-n-Glo fireplace to help with your adjustments.
Reattach the cover plate on the control panel with the screws.
James Clark began his career in 1985. He has written about electronics, appliance repair and outdoor topics for a variety of publications and websites. He has more than four years of experience in appliance and electrical repairs. Clark holds a bachelor's degree in political science.