foul smell from gas furnace vents
Please help. We have a gas furnace (only 2 years old) and an odd smell coming from the heat vents. The gas company has checked the heat exchanger and says its fine and their meters do not pick up any gas or carbon monoxide readings.
We have had our furnace installer plus another company come out and go through the furnace and they also find nothing wrong. We had the drip pan cleaned and the water pump for the humidifier replaced. We ran the fan alone to make sure the smell does not occur with only that running to make sure its not anything in the heating ducts. No smell. It only comes on when the heat has not been run in a few days and it only smells for about 15 minutes then it dissapates.
It is a putrid smell and is difficult to describe. It smells like natural gas mixed in with some type of sickeningly sweet smell and something dead to me. Its not gas because no meters pick this up and it doesnt smell like rotten eggs. It is not a dead carcass because it is throughout all ofthe vents and its been going on for over a year. There is nothing else in my home that has a smell that is being picked up by the furnace that would come out of the vents. It also was ran all fall and winter long and no smell- just last April and this April. I know this sounds crazy but I assure you Im not crazy. My family members have also smelled this gross smell. We had the manufacturer (Frigidaire rep) come out and go through the furnace also. He couldnt find anything. The furnace filter is clean as well. Im at my wits end. Please help! Can you think of anything else that it could be that we havent checked or thought of? I dont want to keep living with this smell. We have young children and Im afraid.