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  1. #1
    Member
    Join Date
    Apr 2005
    Posts
    26
    Location
    Southern Indiana
    Tractor
    2004 4310

    Default Ventless Gas Heater - Smell

    Just installed a propane 30K BTU ventless gas heater on my enclosed-but-far-from-airtight porch; produces great heat but there's a smell that my family finds quite obnoxious. The flame pattern is by-the-book blue, the paint/oiled surfaces that were going to burn have been burnt , the smell is apparently some by-product of combustion, but what? I'm of the opinion it's the combustion of the mercaptan that's added to LP to make it smell, but have found no references to that possibility in hours of internet searching.
    No CO2 or CO problems.
    Happens as soon as we fire the thing up, it's not an oxygen-shortage issue.
    Have not had the LP pressure tested at the heater, but it's the same line that feeds my furnace and cook-top and both are operating fine. Heater is dual-fuel, curently running on LP.
    The cook-top is a 4-burner unvented unit and we don't notice the same smell when cooking even with 3 burners going at the same time.
    Any ideas?

  2. #2
    Silver Member
    Join Date
    May 2008
    Posts
    106
    Location
    Cullman, AL
    Tractor
    Kubota BX2350

    Default Re: Ventless Gas Heater - Smell

    I think you are going to have some smell with the ventless LP heaters. We have a ventless fireplace and it produces a smell as well. Usually when I enter someone's house I can tell if they are using LP gas for heat. I don't think it is anything to worry about, but sometimes the smell can be a nuisance. Currently, we only use our fireplace as supplemental heat due to the smell. Even the pilot light produces a little smell. When I walk into the house after work, I can immediately tell if the fireplace has been on that day by the smell.
    Kubota BX2350
    54" MMM

  3. #3
    Elite Member
    Join Date
    Oct 2004
    Posts
    2,923
    Location
    limerick pa lycoming county pa
    Tractor
    kubota bx23

    Default Re: Ventless Gas Heater - Smell

    Well while we are on the vent less heaters I got a question.
    I with a friend to his cabin last weekend he has one for heat.
    The neighbor turned it on before we got there so the place was warmed up for us.
    All the surfaces had condensation on them the temp was in the low 20's so the place was really cold.
    It did dry off through the night but it seemed unusual to me.

    The reason I ask is I bought one to put in my cabin so I don't have to get up in the night if the wood stove go's out.
    I just haven't got around to hooking it up yet and if it puts that much moisture in the air I might have one for sale!

    I didn't notice any odd smells though.

    tom
    If it ain't broke we will help you brake it
    If it is broke we will help you get it fixed!


    https://www.facebook.com/joseph.t.mussington

  4. #4
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    17,636
    Location
    Nova Scotia, Canada

    Default Re: Ventless Gas Heater - Smell

    Ventless Propane Heaters | The Propane Heaters

    Just some information on ventless heaters. In some localities they are not allowed.
    Egon
    50 years behind the times
    Livin in a
    Worn out skin bag filled with rattlin bones

  5. #5
    Platinum Member DennisArrow's Avatar
    Join Date
    Jul 2003
    Posts
    666
    Location
    Sugar Valley, Ga
    Tractor
    Iseki TL 2300, Kubota RTV, Kubota B7610

    Default Re: Ventless Gas Heater - Smell

    We have been using a ventless space heater for several years in the back of the house where heat from the wood stove has a hard time getting into. NO odor, CO or fumes of any kind. The only problem has been that I finally had to get some bottled air in a small can and blow out the pilot tube.
    Could not be happier with a supplimental heat sourse. Sure beats running the heat pumps..........Dennis

  6. #6
    Elite Member
    Join Date
    Apr 2009
    Posts
    3,202
    Location
    adirondacks

    Default Re: Ventless Gas Heater - Smell

    I've also been looking into them, and did read there may be condensation. As far as the smell I haven't read anything on that but I quess it could be possible?

  7. #7
    Platinum Member firefighter9208's Avatar
    Join Date
    Dec 2006
    Posts
    826
    Location
    Springville, Alabama
    Tractor
    2004 Kubota M4800

    Default Re: Ventless Gas Heater - Smell

    If it's a "blue flame" heater they give off a good bit of smell. So much that I gave the one that I had bought to an aunt and replaced it with a 3 brick radiant heater.

    The gas logs that we put in our house also give off a good bit of smell. They are "vent free". We only use them during a power outage though.

    Chris
    2004 Kubota M4800 with Bushhog M346 Loader with 6' Heavy Duty Bucket and Bale Spear. 6' Bushhog SQ720 Mower, Bushhog RDTH72 Finish Mower. Bushhog 3pth Log Splitter. Andy Tatro Grapple. Home Made 48" pallet forks.

    1966 Farmall 140 with cultivators and fertilizer attachment.

    1999 F250 LWB Ext. Cab 7.3L Powerstroke, ZF 6 Speed, Chip, Exhaust, Cool Air Intake.

    2009 Chevrolet Traverse

    1969 Mach1 Mustang 351W. Too much to list.

  8. #8
    Gold Member
    Join Date
    May 2006
    Posts
    337
    Location
    Lapeer County, Michigan
    Tractor
    Ford 860, 861, Bolens GT2000, Bolens Elimantor 1700, Cub LT2180

    Default Re: Ventless Gas Heater - Smell

    Quote Originally Posted by Egon View Post
    Ventless Propane Heaters | The Propane Heaters

    Just some information on ventless heaters. In some localities they are not allowed.
    Did you read that link? My guess is it's written by the same people that write the manuals for Harbor Freight tools. English is clearly the second language.
    "Remember, I'm pullin' for ya. We're all in this together."

  9. #9
    New Member
    Join Date
    Jan 2010
    Posts
    2

    Default Re: Ventless Gas Heater - Smell

    I'VE READ ONLINE ABOUT THE SMELL BUT DONT KNOW IF IT HAPPENS WITH NATURAL GAS. I WAS PLANNING ON BUYING ONE BUT STILL RESEARCHING. I HAVE A WARM MORNING GAS HEATER (BY LOCKE STOVE CO. ITS NO LONGER IN BUSINESS) WOULD APPRECIATE IT IF SOMEONE OUT THERE HAS INFO ABOUT IT. IT WORKS FINE BUT PILOT SOMETIMES GOES OUT, I DONT KNOW WHY.

  10. #10
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    17,636
    Location
    Nova Scotia, Canada

    Default Re: Ventless Gas Heater - Smell

    What are Ventless Gas Fireplaces?

    Does the language on this site meet standards?

    It does say the same thing though!
    Egon
    50 years behind the times
    Livin in a
    Worn out skin bag filled with rattlin bones

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