Majestic fireplace condensation

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#1

Originally Posted By: bnelson
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Both Majestic gaslog fireplaces in the home I inspected yesterday had condensation inside the glass that didn’t burn off after about 7 minutes of operation. I haven’t seen this before and didn’t know what to make of it? Is it a concern, and can you explain the cause?


Thanks.[img]http://www.nachi.org/bbsystem/usrimages/more/ysseldyk pix 027.jpg[/img]

#2

Originally Posted By: jpeck
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Needed a space before the link, however, there is also a space in the name, so it may not work anyway.

Added with edit - Nope, you need to remove the space in the file name. I use underscores for spaces, like this ysseldyk_pix_027.jpg

--
Jerry Peck
South Florida

#3

Originally Posted By: dvalley
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Was this LPG or natural gas?

--
David Valley
MAB Member

Massachusetts Certified Home Inspections
http://www.masscertified.com

"Some cause happiness wherever they go; others, whenever they go."

#4

Originally Posted By: ekartal
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Is this a single glass panel? A double panel could indicate a leak in a seal.


Erol Kartal

#5

Originally Posted By: rsummers
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Brandon it has been my experience with gas fire places that most of them get that moisture on them from the moisture burning off the gas and out of the combustion air at times. As the fire place heats up the moisture goes away Ive installed 100s of heat n glow and other brands and it almost always happened no matter LP or Natural gas. A good thing to look for when inspecting gas fire places is the to make sure the ember materials do not interfere with the burner and if the fire place is not over drafting.

#6

Originally Posted By: dvalley
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I?ll bet that that fireplace is a vent-free fireplace. Those energy efficient fireplaces keep all of the heat inside the firebox area since they do not require a chimney, but they pump vast quantities of water vapor into your home as they burn. Water is a by-product of the combustion of Natural or LPG gas.


For every 100,000 btu’s of gas burned, approximately 1.5 gallons of water is created and is added to the air inside your home. As the outside air temperature rises, so does the surface temperature of the glass. So when the fireplace is started, the hot temperature inside the firebox starts to warm up and condensate on the cool glass.


Don't consider this to be a problem or safety issue!![](upload://iyQuzqKSf3T6heb2mClDij7XQpO.gif)

--
David Valley
MAB Member

Massachusetts Certified Home Inspections
http://www.masscertified.com

"Some cause happiness wherever they go; others, whenever they go."

#7

Originally Posted By: jpeck
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dvalley wrote:
I?ll bet that that fireplace is a vent-free fireplace.


It is not 'vent free', it "vents" into the house.

Remember why unvented (venting into the house) gas heaters were outlawed?

Yeah, people died.

NOW, though, in our infinite wisdom, we can have unvented gas heater (called "ventless" today), NOT because they are any safer, BUT because we put a safety label on them which says (to the effect of) "Do not use without adequate ventilation, Open all doors and windows".

Yeah, right, I'm using this to HEAT the house, why would I want to COOL the house by opening the doors and windows?

--
Jerry Peck
South Florida