6 Common Air Conditioner Smells Answered and How to Repair the Problem

April 21, 2021

When your air conditioner is clean and operating right, you shouldn’t be smelling anything odd. Unexpected air conditioner noises and odd smells are a clue that something is out of whack. If your air conditioner is old or you haven’t had service done lately, they can be an obvious sign you need skilled air conditioning repair in Zelienople.

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

1. Central Air Conditioner Smells Like Chemicals

If your air conditioner smells bad when turned on, particularly a chemical odor, isn’t a great sign. You may also observe your:

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

These sweet, chemical odors are often a sign that your air conditioner has a refrigerant leak. Your system needs this gas to move heat through copper coils, which can wear out over time.

4 Hints You Are Experiencing a Refrigerant Leak

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

  1. Bubbling or hissing sounds when your air conditioner is on.
  2. Ice crystals on refrigerant lines or the evaporator coil.
  3. Difficulty keeping your residence cool or achieving your programmed temperature.
  4. Higher electrical bills.

How You Can Fix It

A refrigerant leak calls for experienced support from a heating and cooling company like Knoechel Heating Company. Your cooling pro will locate and mend the leak before recharging your AC with refrigerant.

Resolving a refrigerant leak typically costs between $225 and $1,600, based on nationwide averages put together by HomeAdvisor. Your exact cost will depend on the location and severity of the leak, as well as how much time it takes to repair.

If your air conditioner was installed prior to 2010, there’s a good chance it uses R-22 or Freon refrigerant. This refrigerant is no longer being manufactured as a result of its negative effects on the ozone layer. As a consequence, repairs can be very expensive so it may be wisest to schedule air conditioning installation in this instance.

2. Air Conditioner Smells Like Gas

If your air conditioner smells like rotten eggs, there’s likely nothing wrong with it. But there’s a significant likelihood you have a natural gas leak in your home. Natural gas has a sulfur-like additive to warn you when there’s a leak, because the gas can be toxic in heavy concentrations.

How You Can Solve It

If you smell a sulfur or rotten egg odor, we suggest:

  • Switching off your gas supply.
  • Opening windows.
  • Going outside as soon as possible.
  • Getting in touch with your gas company without delay.

3. Air Conditioner Smells Musty

Individuals who contact us to report this issue often share their air conditioner smells like feet, dirty socks or a locker room when it runs. Also known as dirty sock syndrome, this smell is frequently created by a filthy evaporator coil that has mold, mildew and bacteria buildup. Moisture can also make your home air conditioner smell bad. Dirty sock syndrome is most often seen in areas where you turn on heating at night and during the morning before transitioning to cooling during the afternoon.

How to Repair It

The best method for preventing dirty sock syndrome is to frequently replace your air filter and schedule annual air conditioning maintenance with Knoechel Heating Company. We’ll keep the evaporator coil clean and the drainage system unblocked, as excess water can also lead to unpleasant odors.

4. Air Conditioner Smells Like Vinegar

If you are experiencing air conditioner mildew smell or an acidic, vinegar-like odor, it might be the result of several problems, including:

  • A clogged filter
  • Extra condensation
  • Blocked condensate pan or drain line
  • Moldy air conditioner or ductwork

How to Solve It

Examine your filter first. If you haven’t put in a new one within the last three months and can’t see light through it, you should replace it. If that doesn’t resolve the smell, contact Knoechel Heating Company at 724-425-5852.

5. Air Conditioner Smells Like Burning Plastic

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

  • Broken capacitator that’s overheating the motor.
  • Motor that needs lubrication.
  • Broken fan belt.
  • Electrical problem.

Electrical issues should be examined quickly to prevent a fire. If you smell burning plastic when your air conditioner is on, shut it off and call us at 724-425-5852 without delay.

6. Air Conditioner Smells Like Cat Pee

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

How to Solve It

Mycotoxins are hazardous to your well-being. That’s why we recommend having a pro like Knoechel Heating Company examine your air conditioner and ductwork and clean it when necessary.

Our Professionals Can Eliminate Strange Air Conditioner Smells Fast

You deserve to be comfy in your house and shouldn’t have an air conditioner that smells bad. When you are seeking relief from your stinky air conditioner, reach us at 724-425-5852. We’ll diagnose the trouble quickly and take care of it at a reasonable.