Why does my brand-new gas fireplace smell when it runs?
A brand-new gas fireplace smells because it's curing — the factory paint, high-temperature coatings, and manufacturing oils on the firebox and logs bake off over the first several hours of burning. It's normal, temporary, and fades within a handful of fires. Open windows and run the fan. The exception is a rotten-egg gas smell, which is never normal.
New-appliance burn-in
Every new gas fireplace goes through a break-in period. The firebox is finished with high-temperature paint and protective coatings, the logs and components carry manufacturing oils and residues, and the first time real heat hits all of it, those materials cure and release a faint chemical or hot-metal odor. It's the same burn-in a new oven or furnace goes through, and it's expected — not a sign anything is wrong.
What's normal and what's not
Plan on it for the first few uses — a handful of hours of total runtime — with the smell tapering each fire. A little cross-ventilation clears it faster. Two things are not part of normal burn-in: a rotten-egg or sulfur smell, which is gas and means leave the house and call from outside; and a persistent melting-plastic smell, which is often packaging, a foam block, or a sticker left inside the firebox quietly cooking.
If it doesn't fade
Check behind and under the logs for any shipping material, tags, or foam left from the install, and clear it. If the odor is still strong after several hours of burning with the room aired out, we'll come take a look — on a unit we installed, that's covered by the workmanship guarantee that backs every job alongside the manufacturer's warranty. Call (828) 545-0525.
How we can help
Related questions
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