5 Reasons Why Your Air Conditioner Smells

Coming home after a long day on a hot, humid day, you suddenly realize something is wrong with the Air conditioner. If your air conditioner smells bad, there might be a few underlying problems depending on the type of odor. Learn more about what different smells from your air conditioner can mean and how to fix the problem as soon as possible. Contacting an HVAC professional, AC Repair  in Yucca Valley would be the best if the smell doesn’t disappear.

Here We will be Discussing Five Reasons Why your AC Smells!

Burning Smell

Your air conditioner has been built with additional electrical components such as circuit boards, power wires, fans, compressors, etc.
If your air conditioner smells like burning gunpowder or plastic, one or more of these components is likely that one or more of these components is on fire. In this case, turn off your air conditioner immediately and seek advice from a local professional.
Another major reason for such an air conditioner odor is dust accumulation within your unit after a long period of inactivity. When turned on after a long period of time, this dust can burn off and emit a foul odor. This is only temporary and should not be cause for concern.
However, if the smell lingers, the AC begins to malfunction, or the smell is extremely strong, you must immediately turn off your unit and contact your local HVAC expert.

Rotten Eggs

If you smell exhaust fumes or something like gas, open as many windows as possible and leave the house. Report a possible gas leak to the fire department and the local gas company you do business with. While most air conditioners aren’t powered by gas, some are, and the fluids used may be leaking into the airflow of your HVAC system. When rodents or small animals die in the ductwork, a rotten egg odor develops, also associated with gas leaks.


This is the most concerning air conditioner smell on our list. This frequently indicates gas leakage within the system. Natural gas has no odor on its own, but utilities and gas distributors add Methyl Mercaptan to give it a distinct odor. This ensures that any serious harm caused by gas leakage is detected immediately.
You won’t be mistaken if your air conditioner smells like skunk spray. This indicates that gas is leaking and entering your ductwork. Turn off your gas supply as soon as you notice such a smell. As a next step, contact your HVAC company, which will identify the source of the problem and repair it.

Something Smells like a Cigarette

Your air conditioner may eventually begin to smell like stale cigarette smoke if you smoke at home. This rancid odor can cause allergic reactions and headaches.
Your evaporator coil and filter absorb the odor from cigarette smoke. As a result, when you turn on the air conditioner, the tobacco particles are knocked loose and circulated throughout your home via the AC vents, creating an unpleasant atmosphere.

Musty Smell

If your AC smells musty, it might be the accumulation of water that can cause fungus to grow on itself. The dirty and dusty filter can be the other reason which indicates that they need to be replaced soon. Call a professional HVAC contractor for Air Conditioning Installation  in Yucca Valley, CA, for AC installation, repair, replacement, etc.

Contact Diversified Heating and Cooling is an HVAC contractor that provides HVAC unit high-quality services to its customers without compromising the price.