When your air conditioner is fresh and working right, you shouldn’t be smelling anything strange. Out of the ordinary air conditioner noises and strange smells are a sign that something is up. If your air conditioner is old or you haven’t had service done lately, they can be a sure sign you need pro air conditioning repair in The Bay Area.

Here are six of the most common air conditioner smells and how you can resolve them.

1. Central Air Conditioner Smells Like Chemicals

If your air conditioner smells bad when turned on, specifically a chemical odor, it isn’t a great sign. You could also report your:

  • Air conditioner smells like paint thinner
  • Home air conditioner smells sweet

These sweet, chemical odors are regularly a hint that your air conditioner is suffering from a refrigerant leak. Your system needs this gas to shift heat through copper coils, which can break out over time.

Four signs you are dealing with a refrigerant leak.

In addition to the strange smell, here are four other clues that you are experiencing a refrigerant leak.

  1. Bubbling or hissing sounds when your air conditioner is operating.
  2. Ice crystals on refrigerant lines or the evaporator coil.
  3. Trouble keeping your house cold or having your programmed temperature.
  4. Increasing energy bills.

How You Can Repair It

A refrigerant leak calls for professional repairs from a heating and cooling company like Contra Costa Heating & AC. Your cooling pro will find and mend the leak before recharging your system with refrigerant.

Resolving a refrigerant leak usually costs between $225 and $1,600, according to nationwide averages assembled by HomeAdvisor. Your precise cost will depend on the location and severity of the leak, as well as how many hours it requires to solve.

If your air conditioner was installed early than 2010, there’s a good chance it has R-22 or Freon refrigerant. This refrigerant is no longer being produced due to its damaging effects on the ozone layer. As a result, repairs can be extremely expensive so it may be best to do air conditioning installation in this circumstance.

2. Air Conditioner Smells Like Gas

If your air conditioner smells like rotten eggs, there’s probably nothing wrong with it. But there’s a high probability you have a natural gas leak in your home. Natural gas has a sulfur-like additive to alert you when there’s a leak, because the gas can be fatal in big amounts.

How You Can Repair It

If you notice a sulfur or rotten egg odor, we advise:

  • Shutting off your gas supply.
  • Opening windows.
  • Evacuating your home right away.
  • Contacting your gas company now.

3. Air Conditioner Smells Musty

Homeowners who contact us regarding this situation usually report their air conditioner smells like feet, dirty socks or a locker room when it’s on. Also called dirty sock syndrome, this smell is typically caused by a grubby evaporator coil that has mold, mildew and bacteria buildup. Condensation can also make your home air conditioner smell bad. Dirty sock syndrome is most typical in areas where you turn on heating at night and during the morning before transitioning to cooling later on.

How to Fix It

The best way to prevent dirty sock syndrome is to regularly replace your air filter and schedule yearly air conditioning maintenance with Contra Costa Heating & AC. We’ll keep the evaporator coil clean and the drainage system unblocked, since standing water can also produce nasty odors.

4. Air Conditioner Smells Like Vinegar

If you are dealing with air conditioner mildew smell or a pungent, vinegar-like odor, it might be the result of several issues, including:

  • A dirty filter
  • Too much condensation
  • Plugged condensate pan or drain line
  • Moldy air conditioner or ductwork

How to Resolve It

Check your filter first. If you haven’t changed it within the last three months and can’t see light through it, you should replace it. If that doesn’t fix the problem, call Contra Costa Heating & AC at 510-343-9841.

5. Air Conditioner Smells Like Burning Plastic

If you’re experiencing an air conditioner burning smell or that your air conditioner smells like fish, there could be several things wrong. These include:

  • Broken capacitator that’s overheating the motor.
  • Motor that requires lubrication.
  • Broken fan belt.
  • Electrical trouble.

Electrical malfunctions should be examined right away to stop a fire. If you smell burning plastic when your air conditioner is operating, shut it off and reach us at 510-343-9841 immediately.

6. Air Conditioner Smells Like Cat Pee

A powerful ammonia odor means there may be mold present in your air conditioner or ductwork. The smell isn’t the mold itself, but the mycotoxins that mold creates.

How to Repair It

Mycotoxins are hazardous to your health. That’s why you should have a professional like Contra Costa Heating & AC check your air conditioner and ductwork and clean it when recommended.

Our Pros Can Take Care of Weird Air Conditioner Smells Quickly.

You deserve to be cozy in your home and shouldn’t have an air conditioner that smells bad. When you are looking for relief from your stinky air conditioner, contact us at 510-343-9841. We’ll figure out the problem quickly and resolve it at a reasonable.