You can use a vent-free fireplace to provide heat in any room in your home. Vent-free fireplaces provide heat by burning natural gas or propane rather than wood. The flames in a vent-free fireplace should burn blue, although the flames may occasionally burn orange if dirt or other particles get inside the heater and burn. However, flames should not burn yellow. Yellow-tipped flames can cause the appliance to produce unacceptable levels of carbon monoxide. You should immediately open and adjust your vent-free fireplace if you observe yellow tipping.
Things You'll Need
- Compressed air can
- Brush with fine, soft bristles
- Vacuum cleaner with wand attachment
Turn off gas to the appliance according to the manufacturer's directions. For example, turn off a Williams Blue Flame Unvented Gas Heater by pushing in the appliance's gas control knob lightly and turning it clockwise to the "Off" position.
Open the appliance to access the burner. To access the burner on a Williams heater, lift the screen straight up, pull the bottom of the screen away from the appliance, then pull the screen down. Remove the two screws on either side of the bottom front panel, and pull the panel away from the appliance.
Check the burner for dirt. Remove any dirt from the burner with compressed air, a brush with fine, soft bristles or a vacuum cleaner with a wand attachment.
Reassemble the appliance and turn it back on. The flames should be blue.
Turn the appliance off immediately if the flames continue to burn yellow. Continued yellow flame indicates that the gas regulator is defective. Contact the appliance's manufacturer or a qualified technician for repairs. Do not operate the appliance until the gas regulator is replaced.
- Sample vent-free fireplace: Williams Blue Flame Unvented Gas Heater (Owner manual PDF)
Ventless Gas Logs Problems
Ventless gas logs have certain problems that differ from other types of gas logs. For example, common complaints include an overpowering scent,...
Pilot Light Color Flame Safety
A pilot light on a gas-burning appliance should be blue. Another flame color, especially yellow, means the appliance’s gas-to-air mixture is unsafe...
Adjusting the Gas-to-Air Ratio on a Heat-N-Glow Fireplace
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...
How to Choose Ventless Gas Logs
Gas fireplaces allow homeowners to create fires instantly without the work and smoke associated with traditional wood-burning fireplaces. Using ventless logs, homeowners...
How to Adjust a Desa Gas Fireplace Flame
Gas fireplaces provide the warmth and ambiance of wood-burning fireplaces without the hassle of chopping firewood, drying it, carrying it inside and...
How do I Adjust a Propane Fireplace Regulator?
Propane fireplaces operate with liquid propane (LP) as the fuel. A fireplace regulator adjusts to open the propane valve, allowing more propane...
How to Adjust a Gas Log Fireplace Flame
A fireplace can be a focal point for a gathering or a source of relaxation on a cold evening. Instead of burning...
How to Replace Logs in a Ventless Fireplace
To replace logs in a ventless fireplace, the only tool you should need is a crescent wrench to remove the set of...