6 Common Air Conditioner Smells Decoded and How to Fix the Issue

April 21, 2021

When your air conditioner is clean and working correctly, it’s not normal to be smelling anything strange. Out of the ordinary air conditioner noises and weird smells are a sign that something is up. If your air conditioner is old or you haven’t had a tune-up done lately, they can be a sure sign you need professional air conditioning repair in Wharton.

Here are six of the most frequent 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 scent, isn’t a good sign. You may also observe your:

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

These sweet, chemical scents are regularly a clue that your air conditioner has a refrigerant leak. Your system uses this gas to transfer heat through copper coils, which can wear out as time goes on.

4 Hints You Have a Refrigerant Leak

Aside from the strange smell, here are four other signs that you are experiencing a refrigerant leak.

  1. Bubbling or hissing sounds when your air conditioner runs.
  2. Frost on refrigerant lines or the evaporator coil.
  3. Difficulty keeping your residence cold or having your desired temperature.
  4. Increasing electrical costs.

How You Can Repair It

A refrigerant leak requires skilled assistance from a heating and cooling company like Faust Air Conditioning and Heating. Your cooling pro will locate and mend the leak before recharging your AC with refrigerant.

Resolving a refrigerant leak often costs between $225 and $1,600, per nationwide averages assembled by HomeAdvisor. Your precise cost will depend on the location and severity of the leak, as well as how much time it requires to repair.

If your air conditioner was installed early than 2010, it’s likely it runs on R-22 or Freon refrigerant. This refrigerant is no longer being manufactured due to its adverse effects on the ozone layer. Because of this, repairs can be significantly expensive so it may be smartest to schedule air conditioning installation in this situation.

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 significant probability you have a natural gas leak in your house. Natural gas has a sulfur-like additive to signal you when there’s a leak, since the gas can be deadly in big amounts.

How You Can Repair It

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

  • Turning off your gas supply.
  • Opening windows.
  • Evacuating your home promptly.
  • Getting in touch with your gas company now.

3. Air Conditioner Smells Musty

Individuals who contact us about this situation usually report their air conditioner smells like feet, dirty socks or a locker room when it’s on. Also known as dirty sock syndrome, this smell is typically created by a filthy evaporator coil that has mold, mildew and bacteria buildup. Excess water can also make your home air conditioner smell bad. Dirty sock syndrome is most common in locations where you use heating at night and during the morning before switching to cooling later on.

How to Repair It

The best way to prevent dirty sock syndrome is to frequently change your air filter and schedule regular air conditioning maintenance with Faust Air Conditioning and Heating. We’ll keep the evaporator coil clean and the drainage system unblocked, because stagnant water can also create noxious odors.

4. Air Conditioner Smells Like Vinegar

If you are living with air conditioner mildew smell or a pungent, vinegar-like odor, it can be prompted by several issues, including:

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

How to Repair It

Examine your filter first. If you haven’t replaced it within the last three months and can’t see light through it, we recommend replacing it. If that doesn’t fix the problem, call Faust Air Conditioning and Heating at 979-323-6130.

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 a couple 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 checked right away to avoid a fire. If you notice burning plastic when your air conditioner is operating, switch it off and reach us at 979-323-6130 without delay.

6. Air Conditioner Smells Like Cat Pee

A strong ammonia odor means there could be mold flourishing inside 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 well-being. That’s why it’s important to have a pro like Faust Air Conditioning and Heating check your air conditioner and ductwork and clean it when recommended.

Our Professionals Can Get Rid of Strange Air Conditioner Smells Fast

You deserve to be comfortable in your home and shouldn’t have an air conditioner that smells bad. When you need relief from your stinky air conditioner, give us a call at 979-323-6130. We’ll determine the issue quickly and take care of it at a competitive.