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Home > Archive > Home Repair forum > November 2007 > direct vent vs. vent free gas fireplace
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direct vent vs. vent free gas fireplace
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| Jeff Dieterle 2007-11-25, 9:25 am |
| I'm planning to install a gas fireplace. Fortunately the location has direct
access to an unused flue on my chimney. What are the pros & cons of direct
vented vs. vent free, I haven't been able to find much on the web beyond the
fact that vent free will add moisture.
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| On Nov 25, 7:41 am, "Jeff Dieterle" <djdiete...@lhughes.net> wrote:
> I'm planning to install a gas fireplace. Fortunately the location has direct
> access to an unused flue on my chimney. What are the pros & cons of direct
> vented vs. vent free, I haven't been able to find much on the web beyond the
> fact that vent free will add moisture.
My vent free also produces an odor - not so much as you notice when
you're using it, but when you go outside and come back in it will be
apparent. Not a gas smell, but a combustion smell. Also, after using
for several hours, the digital CO2 detector will show an increase but
never to the point of alarming. So IMHO, they're good for taking the
chill off or for mood stimulation, but not for long term use.
Red
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| Joseph Meehan 2007-11-25, 1:25 pm |
| It will also heat better, but as noted it may have an odor. Don't
assume that the available vent is suitable for the fireplace. Have it
checked by someone who really knows first.
"Jeff Dieterle" <djdieterle@lhughes.net> wrote in message
news:13kirareped69dc@corp.supernews.com...
> I'm planning to install a gas fireplace. Fortunately the location has
> direct access to an unused flue on my chimney. What are the pros & cons of
> direct vented vs. vent free, I haven't been able to find much on the web
> beyond the fact that vent free will add moisture.
>
--
Joseph Meehan
Dia 's Muire duit
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| On Sun, 25 Nov 2007 07:53:31 -0800 (PST), Red <RedAlt5@hotmail.com>
wrote:
>On Nov 25, 7:41 am, "Jeff Dieterle" <djdiete...@lhughes.net> wrote:
>
>My vent free also produces an odor - not so much as you notice when
>you're using it, but when you go outside and come back in it will be
>apparent. Not a gas smell, but a combustion smell. Also, after using
>for several hours, the digital CO2 detector will show an increase but
>never to the point of alarming. So IMHO, they're good for taking the
>chill off or for mood stimulation, but not for long term use.
>
>Red
After reading the first two "Caution" and "Warning" pages of the
installation instructions of a "vent free" appliance, most "sane"
people wouldnt use one anywhere but in the great outdoors. :-)
Bubba
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"Red" <RedAlt5@hotmail.com> wrote in message
news:834ce245-07ea-436e-be3d-051090f3f5ee@s12g2000prg.googlegroups.com...
> On Nov 25, 7:41 am, "Jeff Dieterle" <djdiete...@lhughes.net> wrote:
>
> My vent free also produces an odor - not so much as you notice when
> you're using it, but when you go outside and come back in it will be
> apparent. Not a gas smell, but a combustion smell. Also, after using
> for several hours, the digital CO2 detector will show an increase but
> never to the point of alarming. So IMHO, they're good for taking the
> chill off or for mood stimulation, but not for long term use.
You really have a CO2 detector? Not a CO detector?
Bob
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| Jeff Dieterle 2007-11-26, 9:25 am |
| Which it will heat better. What do you mean specifically by don't assume the
vent isn't suitable? It's a clay tile lined chimney inside concrete block
veneered with brick.
"Joseph Meehan" <sligoNoSPAMjoe@hotmail.com> wrote in message
news:4749a142$0$24295$4c368faf@roadrunner.com...
> It will also heat better, but as noted it may have an odor. Don't
> assume that the available vent is suitable for the fireplace. Have it
> checked by someone who really knows first.
>
> "Jeff Dieterle" <djdieterle@lhughes.net> wrote in message
> news:13kirareped69dc@corp.supernews.com...
>
>
> --
> Joseph Meehan
>
> Dia 's Muire duit
>
>
>
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| Joseph Meehan 2007-11-26, 5:25 pm |
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"Jeff Dieterle" <djdieterle@lhughes.net> wrote in message
news:13klmvfb7a0bu38@corp.supernews.com...
> Which it will heat better.
Define better. :-) non-vented will use less fuel to create the same
amount of net heat. It may or may not heat faster.
> What do you mean specifically by don't assume the vent isn't suitable?
> It's a clay tile lined chimney inside concrete block veneered with brick.
The exhaust of a gas burner is different than that from wood, for
example. What works well for one may not work well for another. One factor
is the size of the flue. You don't want too small, but you also don't want
too large. There are several factors and the best (best as in safest) is to
have a professional check it out. I would want to do that anyway if it has
not been done for a while, just to make sure there are no defects.
>
> "Joseph Meehan" <sligoNoSPAMjoe@hotmail.com> wrote in message
> news:4749a142$0$24295$4c368faf@roadrunner.com...
>
>
--
Joseph Meehan
Dia 's Muire duit
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| On Nov 25, 8:41 am, "Jeff Dieterle" <djdiete...@lhughes.net> wrote:
> I'm planning to install a gas fireplace. Fortunately the location has direct
> access to an unused flue on my chimney. What are the pros & cons of direct
> vented vs. vent free, I haven't been able to find much on the web beyond the
> fact that vent free will add moisture.
Also check your local codes. Unless they've changed things, they are
not legal in NY. Could be the same for other states, too. I don't
know.
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| On Nov 25, 8:41 am, "Jeff Dieterle" <djdiete...@lhughes.net> wrote:
> I'm planning to install a gas fireplace. Fortunately the location has direct
> access to an unused flue on my chimney. What are the pros & cons of direct
> vented vs. vent free, I haven't been able to find much on the web beyond the
> fact that vent free will add moisture.
I've been using a vent free inside an unused fireplace for about 7
years. Its great. We live in a split foyer (walk in and go up or
down) and our basement/family room is quite chilly in the winter. A
vented unit does little more than look pretty since 90% of the heat
goes up the chimney. Our flue is closed, the doors are open, and all
of the heat goes into the room. Keeping it on a low trickle is enough
to keep the room nice and toasty. I don't have any moisture or CO
issues (we have a detector in the nearby hallway.)
The flame on vented units tend to look more realistic. Our looks more
like a stove on high with fake logs around it (lots of blue). But
again, I'm more interested in the heat than the looks.
--Jeff
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| Phisherman 2007-11-30, 5:25 pm |
| On Sun, 25 Nov 2007 07:41:38 -0600, "Jeff Dieterle"
<djdieterle@lhughes.net> wrote:
>I'm planning to install a gas fireplace. Fortunately the location has direct
>access to an unused flue on my chimney. What are the pros & cons of direct
>vented vs. vent free, I haven't been able to find much on the web beyond the
>fact that vent free will add moisture.
>
Can't list the pros and cons. My thoughts are that anything that is
burning needs to be vented. Check out your chimney to make sure it is
in good condition. My gas fireplace is side-vented to the
outside--unfortunately, I have no chimney. Currently, I have the
fireplace stuffed with insulation (I havn't turned it on in over 8
years) because it creates a cold draft.
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| Edwin Pawlowski 2007-11-30, 5:25 pm |
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"Phisherman" <noone@nobody.com> wrote in message
> My thoughts are that anything that is
> burning needs to be vented.
Correct, but the question is how much venting. Many of the new propane
heaters are 99+% efficient so there is not much fume, however, they do
consume oxygen. Since the airtightness of houses varies considerably, that
is not a big deal in most cases. Air going out a chimney = the same amount
of air infiltrating someplace
Millions of homes have gas ranges and ovens with no vents and no problems..
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| Noozer 2007-11-30, 9:25 pm |
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"Edwin Pawlowski" <esp@snet.net> wrote in message
news:IK_3j.105$VJ.16@trndny05...
>
> "Phisherman" <noone@nobody.com> wrote in message
>
> Correct, but the question is how much venting. Many of the new propane
> heaters are 99+% efficient so there is not much fume, however, they do
> consume oxygen. Since the airtightness of houses varies considerably,
> that is not a big deal in most cases. Air going out a chimney = the same
> amount of air infiltrating someplace
>
> Millions of homes have gas ranges and ovens with no vents and no
> problems..
I've always wondered how safe these were...
Does anyone know if they are acceptable for use in Alberta, Canada (Calgary
specifically)?
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