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Ventless gas fireplace causing mantel to get too hot
Posted on 1/23/26 at 8:09 pm
Posted on 1/23/26 at 8:09 pm
New house (to me). I have a ventless fireplace and it’s causing the mantel to overheat and shrinking the seam caulk on wood. I’m afraid that if I continue to use it, the heat will cause the wood to warp.
Would a heat deflector fix the issue?
There is no fan.
Would a heat deflector fix the issue?
There is no fan.
This post was edited on 1/24/26 at 9:00 am
5
Posted on 1/23/26 at 9:13 pm to cubsfan5150
I think your instincts are right. Ventless fireplaces make the area right above very hot. The heat deflector would probably be the easiest way to deal with the issue. Amazon has some pretty easy to install ones.
Posted on 1/23/26 at 9:54 pm to cubsfan5150
There is no easy answer to this. I’ve simply turned down the flame height on mine.
ETA: I think we’d be best off to create a gap between the mantle and the wall to let heat flow upwards.
ETA: I think we’d be best off to create a gap between the mantle and the wall to let heat flow upwards.
This post was edited on 1/23/26 at 10:05 pm
Posted on 1/24/26 at 12:56 pm to Spankum
Did you add a heat deflector?
Posted on 1/24/26 at 1:45 pm to cubsfan5150
quote:
Did you add a heat deflector
No, I have not. Honestly never seen any kind of heat deflector for that application
Posted on 1/24/26 at 5:52 pm to cubsfan5150
There are minimum allowable distances that should be followed. Find the make/model of your fireplace and look up the manual.
Posted on 1/25/26 at 9:27 am to cubsfan5150
I put an airbar fan (basically a long, thin fan) on my mantle, right at the edge, with it blowing slightly down. That was the easiest and cheapest solution.
LINK
LINK
Posted on 1/25/26 at 9:34 am to cubsfan5150
I think it’s common with those. I opted for a vented fireplace and sacrificed the heat when we built. My neighbor with a ventless ruins his TV above the fireplace every time he turns it on.
Posted on 1/25/26 at 9:40 am to magicman534
Neighbor should consider a heat deflector and/or fan to direct the heat away from the TV.
Posted on 1/25/26 at 1:44 pm to Ricardo
Heat deflector is your answer. I have one.
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