Central Air Conditioner Smell
HVAC Smells Forum

Central Air Conditioner Smell

Here are lists of common central air conditioner problems we received from visitors to central air conditioner and refrigeration cycle. Com.

What will you find in these lists of air conditioner problems?

Smell                   &                   Stink Air

You will have to scroll down and search the link for the information you need to read. The lists will be update whenever we have new information.

You turn your central air conditioning unit on and it stinks! What is your ac smells like?

Does it smells like Fish, Sewage, dead animal, urine, farted, vinegar, Freon, rotten egg, chlorine coming from your supply air.

No, we’re not making this up. Consumer had experienced this awful smell. We are gathering information and try to determine why air conditioner has odor.

This is the official place to discuss why some air conditioning smells funny.

No, we are not expert on why the air conditioning smells. There are so many odors we hadn’t experienced with.

Below are lists of air conditioner odor and unanswered question

These lists are not meant for Do It Yourself consumer. It’s for educational purposes only. We’re not responsible for your action!

What Other Visitors Have Said

Click below to read some smell relative discussion from other visitors...

Fishy all over, humidifier makes it worse 
Can't say it smells exactly like fish, but it's more like that than anything else I could describe. Not like mildew, or gas, or burn off of a normal dust …

New Central Air Unit and Furnace Smell 
We had a new air conditioner and furnace installed 8-4-11. It is a regular air conditioner and a 95% efficiency furnace. Our house was built in 1974. …

Central Ac Smell Like Sulfur and Phosphorus  
I live in an apartment on the bottom floor. Recently, I have notice when I turn on the central ac a FOUL smell would comes from the vents. It smell somewhat …

4-day-old central ac smells sweet, chalky - like new cement 
Smell lingers between cycles. We thought it was a new equipment smell and would go away, but it's still there. This is the latest, most up-to-date …

Is It Possible For Freon To Smell 
I have a 2 stage air and heating system. This is only the 2nd year I am using the central air conditioning and there is a very bad smell like rotten smell …

Central air conditioner in a new home smells when  
February 25, 2011 When we first use our central AC in our new home it smells like mold. After we use the ac unit for several days the smell eventually …

Regular Central Ac Units Produce Septic or Rotten Egg Smell 
We had knew units put in last year at this time.And we have two units. Have modular home.When the front unit comes on. A septic smell or rotten egg smell …

Smelling Feet Air 
Incoming air from the heat pump stinks like the smelliest feet you ever smelled.

Mildew/Mold Odor 
I spend winters in our double wide in Florida. I've been running the AC off and on for the last 4 weeks. I just started to get a mildew/mold odor from …

Dead Animal Smell 
When you first turn it on it smells like a dead animal. This did not happen until they put a new system in and new duct works. Its makes you want to throw …

Central Ac Unit smells 
Occasionally, coming from the vents on the floor, an odor of rotten eggs is coming through the vents when the central ac is running. the central ac …

Strong Noxious Odor  
A strong noxious odor slowly fills our walkout level room AFTER the central air conditioner is turned off. It is a new Carrier furnace and air conditioner, …

Central Ac Smells Like Smokey Or Burning? 
Central air conditioner has been running fine, but today started making a weird smell like a smokey/burning... we had our septic pumped thought that had …

Air Conditioner Smell? 
smells like nail polish remover or paint remover but very faint.

Central Air Smells When I Turn It On 
The central air conditioning unit was on all summer with no problem. Then when it got cooler and had to put the heat on at night we still had no problem. …

Fish Smell Coming from Central Air Conditioner 
All last summer a strong fish smell seemed to be coming from our mud room (no a/c vents in there, but there is a trap door in the ceiling to the attic …

Central air conditioner had burning smell  
My central air conditioner had been running fine until yesterday. It produces this burning smell from the air. I didn't turn my heating unit on or …

Smells like chlorine or nail polish when AC or heat is turned on Not rated yet
It's a Carrier central ac unit in the attic. It also smells early in the morning from the inlet duct if the AC or heat were not turned overnight. We have …

Central Air Conditioning Unit Smell Not rated yet
I just had a whole house dehumidifier attached to the return ductwork in my home. When I run the dehumidifier for a time then turn on the central ac unit, …


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