Furnace smells like rotten eggs or like a sewernThe smell can indicate a failed heat exchanger, especially if you have a high-efficiency furnace. This is a serious problem because a bad heat exchanger can pump unsafe levels of dangerous carbon monoxide (CO) gas into your home.Aug 6, 2019,
A natural gas leak can lead to a violent explosion. Back to sewer gas. Actually, sewer gas is mostly methane which is odorless but it's almost always mixed with other gases, the most common of which is hydrogen sulfide which has a rotten egg smell.
A regular sewer-gas smell is just a bad stink with a definite odor of feces and sometimes a rotten-egg (hydrogen sulfide) smell and/or a moldy mustiness too.
Causes of Sewer Gas Smell The most common cause of sewer gas smells in your house is a leak in your plumbing. You'll want to prevent even small leaks to avoid major plumbing repair costs. Sewer gas smells could be coming from your pipes either because they weren't installed properly or were damaged.Feb 11, 2022
Gas smell. Radiators can't leak harmful gases like carbon monoxide (which is odourless), so any gassy smell you detect coming from a radiator is unlikely to be any cause for panic. However, if you can smell something sulphurous or egg-like then there might be a build up of hydrogen sulphide in your radiator.Feb 9, 2021
If you smell raw sewage coming from your vents, there is one usual cause: sewage. A backed-up sewer line or a crack in a plumbing or sewer vent pipe could cause the smell. If it is close enough to your ducts, then the ducts can spread the smell throughout your home.Nov 25, 2016
If you detect a sulfuric, rotten egg-like smell coming from your furnace, it is imperative that you act immediately, as you could be dealing with a gas leak. While natural gas is extremely combustible and one of the most efficient fuel sources for a furnace to run on, it is also highly toxic when ingested.Feb 5, 2021
The smell is usually created when dust settles on the heat exchanger after a long period of heater inactivity. So when the heater is turned on, the dust gets burned off. It's normal for this to happen. But if the burning smell doesn't go away after a while, you should call us immediately!
What does it mean? If you smell a dusty or burning smell the first few times you turn on your heat, it's most likely dust and dirt that's settled on components inside your heating system throughout the summer. As you fire up the heat, those dust particles burn away, producing a weird burnt/dusty smell.Oct 23, 2017