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#1 |
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Registered User
Trade: GC
Join Date: Jan 2009
Location: Granville, NY
Posts: 9
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Vent Free
I am building a house that is using geothermal force hot Air, but the great room has 27ft cathedral ceiling, so was going to put a supplemental LP 40,000 btu fireplace in. Do to the layout, venting will be a challenge, so considering vent free, the great room is open to the dining room, kitchen, foyer, upstairs hall, so in all, about 14,000 cubit feet, well in excess of the 10,000 cubit feet required for a heater this size. Will have carbon monoxide detectors in rooms. Anyone out there see a problem with the vent free? Personally I like the direct vent, and have never used the vent free.
thanks, |
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#2 |
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manager
Trade: heating cooling tech
Join Date: Jan 2009
Location: Round Lake IL
Posts: 28
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Re: Vent Free
Thay put alot of humidy in the air
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| The Following User Says Thank You to greghvacguy For This Useful Post: | NewGC (01-21-2009) |
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#3 | |
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Dr Heat
Trade: hvac
Join Date: Dec 2008
Location: Mid West
Posts: 325
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Re: Vent FreeQuote:
But I know several people who use them and they are efficient. Considering you are using geo I would be concerned if you thought you would use it as backup heat. be sure you use a vented or electric backup |
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| The Following User Says Thank You to Dr Heat For This Useful Post: | NewGC (01-21-2009) |
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#4 |
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Registered User
Trade: electricial
Join Date: Feb 2009
Posts: 8
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Re: Vent Free
I have tested a friends wall mounted gas heater with the plaques in. My meter read 4 ppm CO throughtout his 20' wide row home. If you don't mind absorbing carbon monoxide into your blood stream go for it. This is a low level but I prefer to breathe fresh air. I know osha sets the levels around 40-50 ppm in the work place. I'll pass on the head ake!
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#5 |
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Pro
Trade: Electrical & Carpentry
Join Date: Dec 2008
Location: Adirondacks of NY
Posts: 775
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Re: Vent Free
Hello neighbor, I have had both & i can tell you I would not ever use a vent free again. I know what they state about them but that is probably in perfect conditions. I got some "bad" propane, if there is such a thing, maybe with some impuritys or something & my stove started acting up after my tank was filled & it actually blackened my walls & ceiling, and I was breathing this in. I quit using it then.
I installed a direct vent in the house I live in now & fresh air is brought in from outside for the combustion instead of your room air. It worked well. But because of the cost of propane I switched to a pellet stove which has been just great. It is a 40k to 50k btu model. If you don't mind lugging 40 lb bags it is the way to go & the good thing about it is , the pellets are from the USA or Canada........... Last edited by mrmike; 02-18-2009 at 07:20 AM. |
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#6 | |
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KemoSabe
Trade: residential framing/siding/general carpentry
Join Date: Feb 2009
Location: Vineland, New Jersey
Posts: 12,817
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Re: Vent FreeQuote:
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#7 | |
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Pro
Trade: Electrical & Carpentry
Join Date: Dec 2008
Location: Adirondacks of NY
Posts: 775
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Re: Vent FreeQuote:
If you had a direct vent,the firebox and the venting are sealed from the "shell" the firebox is built in. You would have to have air leaving the fireplace for fresh cold air to be coming in the vent. When the fireplace is off no air should be leaving the firebox and no air should be entering the firebox. once again, this is a "sealed combustion chamber" usually cold air coming out of your fireplace is a installation issue. If this were not true, then NO ONE would be happy with their direct vent fireplace. I installed both my Gas & pellet inserts & did not have any cold coming in anywhere. You have a 4" air intake pipe & a 4" exhaust which are hooked into the firebox. You have to seal around these at top and bottom on an insert to stop any air loss. If you read the directions to any vent free & it will tell you to leave a window open, so what does that tell you?? Direct Vent here with no worry about any fumes. |
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#8 |
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KemoSabe
Trade: residential framing/siding/general carpentry
Join Date: Feb 2009
Location: Vineland, New Jersey
Posts: 12,817
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Re: Vent Free
I agree with the statement about the opening of a window, but my unit was intended for limitted use to set a mood, not as a source of heat, personally I think boiling macaroni on the gas stove is= in co emissions with a recirculating range hood. As far as the sealed combustion chamber, my stove had one,but I could lay on the floor and look straight out the back of the unit to outside, and let me tell you when the unit was off you could feel the cold five feet away from the unit.
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