Fireplace Expansion Noise

We installed a zero clearance, corner fireplace. Wood burning only. This was not so much for heat, but mainly for esthetics. This went in a new adddition construction, and was framed in per manufacturer's instructions, with drywall and tiled surround.

Since it's been cold here, high 30's - low 40s's at night (hey, it's cold for US) ) we fired it up. After blazing for a while the fireplace makes a single loud THUMP, sheet metal bang sound. I presume this is sheet metal expansion, as the temp comes up.

Is this considered normal, and will it eventually cease as the firplace "sets in"?

Thanks in advance.

 

Alan,

Not sure what brand you purchased but depending on the unit, I cannot say that it may stop or stop after it get's "set in".

The fireplace may produce a banging noise during operation. This noise is caused by metal expansion and contraction as it heats and cools. This noise typically occurs when the fireplace is just starting up. It does not effect the operation or cause damage to the fireplace.

Hope this helps!

 

Thanks Doug! That's what I thought.

It's a Temco, 36" unit w/ 12" x 8" double wall chimney/vent, approx 16" to top cap & 3" feed vent. Chimney vent is direct vertical, situated in framed/drywalled "dead" space, routed through roof/attic crawl space and framed/stuccoed surround on the roof.