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How do I know if I have vented or ventless logs

Posted on 1/12/25 at 3:56 pm
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/12/25 at 3:56 pm
Simply put, this house is goofy. We have a gas fireplace that I can say with a lot of certainty was either originally a traditional wood burning fireplace that got converted to gas. My issue lies with the fact that when we run the fireplace, the room does not heat up well at all. We do have a flue open, but I do wonder if that was there originally for wood, then when the gas logs were installed, they might have gotten ventless logs since those will heat a room without the need for a flue.

Is there a way to determine what logs I have? I do want to upgrade my logs and burner one day but for now I'd like to keep what I have since it still functions, albeit functioning just for looks.
Posted by Spankum
Miss-sippi
Member since Jan 2007
58426 posts
Posted on 1/12/25 at 5:08 pm to
You might have to take them out to see the nameplate. That should give the manufacturer and model number.
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/12/25 at 6:17 pm to
Welp, we tried and whatever metal sheet that had all of the fireplace's description inside the firebox just rubbed off and doesn't tell me a think.


Looks like I'll just upgrade next year.
Posted by East Coast Band
Member since Nov 2010
65786 posts
Posted on 1/12/25 at 6:51 pm to
Generally, vented logs have a much prettier yellow flame. Vent free logs typically have a more unappealing bluish flame, especially at the base.
Posted by Art Vandelay
LOUISIANA
Member since Sep 2005
11157 posts
Posted on 1/12/25 at 7:03 pm to
Yes I have ventless and I have to play around with the gas to get the flame looking ok. If it is ventless close it up and take advantage of the heat. Mine heats a large room and does it fast.
Posted by PenguinPubes
Frozen Tundra
Member since Jan 2018
11423 posts
Posted on 1/12/25 at 8:54 pm to
Doesn’t give off a funny smell tho? Mine does, that’s why I rarely use it
Posted by tigerbelly
mathews
Member since Jun 2006
70 posts
Posted on 1/12/25 at 9:18 pm to
I never use my fireplace because the ventless logs stink. At first I thought I just had to burn the chemical smell off but 6 years later it’s still bad.
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/12/25 at 9:25 pm to
Looking online i think they're vented based on how you described the flames. They look closer to a natural flame and don't have as intense a burn as I would imagine a ventless would need. It could be the logs are old and need replacing. Problem is since I can't gauge the BTUs on my burner, I'll have to buy new logs and a new burner.
Posted by Spankum
Miss-sippi
Member since Jan 2007
58426 posts
Posted on 1/12/25 at 10:49 pm to
Just replacing them would be your best bet. Another option would be to call a service tech who in knowledgeable to come out and tell you whether it has an oxygen depletion sensor.

Just so you know, all gas logs must be stacked exactly as they are pictured in the literature. If a flame touches a log, it will produce aldehydes and stink.
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/12/25 at 10:52 pm to
I would say it probably doesn't. It's pretty old. The only way to turn on the fireplace is to turn a knob on the side of the fireplace and manually ignite the gas with a grill lighter.
Posted by Spankum
Miss-sippi
Member since Jan 2007
58426 posts
Posted on 1/12/25 at 10:55 pm to
If there is no pilot light or thermocouple, it is time to replace! Prepare for sticker shock!
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/12/25 at 11:00 pm to
Is it a fairly easy install to DIY? I've hooked up my gas stove so I'm guessing they would probably be the same. Shut off main gas line, bleed out whatever could be in the fireplace, uninstall, wrap with gas pipe tape, install?
Posted by Spankum
Miss-sippi
Member since Jan 2007
58426 posts
Posted on 1/12/25 at 11:43 pm to
That’s about all there is to it! Your current logs are probably connected by a stainless steel flex line with flare fittings. Just be sure you don’t have a brass flex line, which neeeds to be replaced if you do.

Put some dish soap and water in a spray bottle and spray it down good to be sure you have no leaks.
Posted by Teufelhunden
Galvez, LA
Member since Feb 2005
5886 posts
Posted on 1/13/25 at 7:29 am to
quote:

ventless logs stink


That's why I rarely use mine as well. I wish I would have gone vented like I had at my last house.
Posted by Art Vandelay
LOUISIANA
Member since Sep 2005
11157 posts
Posted on 1/13/25 at 1:30 pm to
quote:

That's why I rarely use mine as well. I wish I would have gone vented like I had at my last house.


That’s weird. Mine has no smell. My oldest is like a bloodhound and would have said something if it did smell.
Posted by Teufelhunden
Galvez, LA
Member since Feb 2005
5886 posts
Posted on 1/13/25 at 7:26 pm to
Mine is propane. I know folks with natural gas and that doesn't bother me
Posted by Art Vandelay
LOUISIANA
Member since Sep 2005
11157 posts
Posted on 1/14/25 at 11:37 am to
Yeah propane definitely puts off a smell. I remember we had a propane forklift. Couldn’t stand that thing. Smells like a fart all day. Probably something they should tell you when they sell it to you. “Hey do you have propane, it may stink.”
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7153 posts
Posted on 1/17/25 at 11:58 pm to
So I did a little more research. Might make a stop by Woodburners tomorrow and see what they've got based on our dimensions. I might not necessarily need to get a new kit, in the future, but I did learn that a vented fireplace will have to be placed somewhere a wood burning fireplace could function. I realized that at some point a metal mesh used to be installed and it somehow broke.

I'll still look into what type of difference I can hope to gain considering natural gas doesn't burn warm enough to heat up the room, and maybe the looming weather will speed up this process of upgrading.
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