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Help for oil smell

Jaybee097
Jaybee097 Member Posts: 4
I have an 880 sq ft home, one floor, dirt crawl space underneath.  Heated by forced hot air via Navien hot water heater and supplied by propane. My question, ever since we moved in, every once in a while (esp on damp cooler days when heat is kicking on also rainy days in summer) we get what I can describe as a faint heating oil smell only in the front part of the house.  To my knowledge, this house has always been supplied by propane, never oil but it’s an old house so it’s possible at one point it was supplied with oil although that never came up when I bought it 8 years ago.  So where the heck is the smell coming from? Neighbors use oil to heat their homes and are close by but no oil smell outside. 
Thanks in advance! 

Comments

  • Big Ed_4
    Big Ed_4 Member Posts: 1,827
    Check the dirt crawl space ..
    I have enough experience to know , that I dont know it all
    Jaybee097
  • Jaybee097
    Jaybee097 Member Posts: 4
    Yes, we’ve actually had a few contractors under there this year looking to seal it and no mention of stronger oil smell or remnants of prev oil tank just a very musty odor. 
  • Jamie Hall
    Jamie Hall Member Posts: 17,766
    As @Big Ed_4 said -- check the crawl space. It may very well have been heated with oil at one point -- 8 years is not so long ago.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Jaybee097
  • delcrossv
    delcrossv Member Posts: 326
    Damp cold days/rainy days leads me to believe there's some contamination below the surface in the crawlspace that's brought up when moisture enters the soil. Oil floats on water.
    Trying to squeeze the best out of a Weil-McLain JB-5 running a 1912 1 pipe system.
    Jaybee097
  • Jaybee097
    Jaybee097 Member Posts: 4
    edited January 14
    A.) should i be worried?
    B.) how can I find out if there ever was an oil tank? 
    I have looked already for obvious signs of one and have not found anything….yet….but the smell is an indicator! Just worried if there’s an old leaky tank! House was built in 1932 
  • Jamie Hall
    Jamie Hall Member Posts: 17,766
    1932?! There was an oil tank. The questions are: where was it? Was it removed? Had it leaked? And if it had, was it remediated?

    It is possible that you may be able to find the answers -- or at least one or two of them -- in the records of the building inspection or fire marshal offices in your community. That depends a good deal on how conscientious those offices were -- which varies widely -- and whether or not the removal or discontinuance of the tank was done with any permits -- and we all know that homeowners (and fuel companies) sometimes get very creative.

    In terms of immediate hazard, if you don't have an on-site water well or a basement there really isn't one. However... now that you are aware that there is or may be a problem, if you were to sell the property you would have to disclose that, and it would have to be investigated. If it turned out there was indeed contamination of the soil -- or worse, a buried tank of unknown condition -- it would have to be remediated. It is possible that your homeowner's insurance might cover that, or at least part of it.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Jaybee097MaxMercySuperTech
  • MaxMercy
    MaxMercy Member Posts: 189
    edited January 14
    Agree with Jamie - almost certainly heated with oil at some point in the past if you're in an area with most homes using oil heat. Probably an abandoned oil tank would be my guess.

    In the meantime, have the heating ducts been sealed? Even if they're only insulated, they should be sealed before insulation to prevent picking up outside air.

    EDIT: You said your neighbors use oil, if the houses are close together, you may be getting that smell from a neighbor's leaking tank. You probably wouldn't pick up the smell outside because of air movement. The only way to tell would be to do core samples.



    Jaybee097
  • Jaybee097
    Jaybee097 Member Posts: 4
    edited January 14
    No heating ducts that I have seen, but what might they look like? we currently have baseboard hot water heat supplied by a Navien unit.  I suspect it was baseboard prev too
    MaxMercy