As a homeowner, you’d always love to enjoy the pleasant, friendly and cool air, thanks to your HVAC unit. However, if a bad odour is laced with the cold air, the warm refreshing sensation is always ruined. If your AC system starts to smell unpleasant, then definitely it is time to examine, find and eliminate the source of the odour. On most instances, the bad smell often comes from mould and mildew which accumulate as a result of condensation on the refrigerator coils, when there are leaks in the system. Also, small animals such as rats can get inside and die in the unit, creating a really intimidating odour. Certain smells are just irritating, but others can be problematic.
So today in this particular post, we are going to discuss the common types of AC vent odour, plus the appropriate procedure to undertake so as to eliminate it.
Decomposing garbage smell.
A dead animal is the most common cause of a rotting garbage smell. The animal might have found its way through the air ducts, died and begun to rot, releasing that smell f a rotten egg. Even though not that dangerous, you’ll still want to have an experienced cooling and heating technician to remove the decaying dead body as soon as possible.
The smell of a stinky foot.
A dirty, clogged AC system might produce a stinky foot odour. This is usually as a result of stagnant water which collects in your system and is not adequately drained away. A thorough cleaning by a technician should be appropriate to solve this particular problem.
Cigar smoke odour.
If you have a cigarette smoker in your home, the smoke fumes might get pulled into your HVAC system’s condenser coils. The smell permeates the coil, blasting that sort of an old cigarette smell into your house each time you turn on your unit. Cleaning the coil thoroughly can fix this particular issue.
This is perhaps the most common type of smell associated with AC unit and is often an indication that either fungus or mould has grown around your air conditioner. Of course, you understand that besides cooling the air inside your house, your air conditioner also eliminates excess moisture. When this moisture is not drained away properly, mould might start to grow particularly in places with lingering moisture. If you didn’t know, a dirty filter could lead to the smell of mildew to come from the supply registers. If you notice this type of smell, promptly hire a professional to clean your HVAC, and replace the filter.
As opposed to cigarette smell, an active burning odour could be an indication of a mechanical issue with your AC compressor or fan. You should turn off the HVAC unit and examine it if you notice this particular smell. This is a serious problem, and you should contact an HVAC professional right away to avoid incidences of fire.
The smell of sewage from your HVAC vent is an indication of more far-reaching problems. Typically, it indicates a ruptured sewer vent pipe, somewhere close to the ductwork. All it takes is a bit of methane gas from the backup to fill your home with a bad odour. Bearing in mind that methane is a hazardous gas, you should contact a qualified plumber without any delay.
A shorted out circuit fan motor or board might send out a gunpowder odour out of the supply registers when AC unit initially cycles on. This can be an indication of ageing parts, and you should contact your plumber for replacement parts.
This particular one might be as a result of a dead skunk, even though this is not very likely. A more probable cause could be a leaking gas. Methyl mercaptan from the gas leak, that smells in a similar manner to a skunk spray might be entering your ductwork. If this is the case, your entire home could be in great danger. Reach out to your HVAC technician plus your gas company as soon as possible.
An air conditioner is often powered by electricity, but not gas. However, bearing in mind that a few components, as well as the engine, contain fluids, the smell of exhaust fumes, can fill your entire home if these fluids leak out. To prevent a nasty situation from occurring, have your AC unit fixed as quick as possible.
The Bottom Line.
An air conditioner is an essential component of your home. Great care along with regular maintenance should be practised, so as to ensure their longevity. If your air conditioner smells like rotten eggs, skunk, sewage, gunpowder or any other type of smell discussed above, you clearly need an immediate air conditioning repair.