6 Common Air Conditioner Smells Decoded and How to Solve Them

April 21, 2021

When your air conditioner is fresh and running correctly, it’s not normal to be smelling anything odd. Peculiar air conditioner noises and strange smells are a sign that something is up. If your air conditioner is old or you haven’t had a tune-up scheduled recently, they can be an obvious sign you need pro air conditioning repair in Pflugerville.

Here are six of the most frequent air conditioner smells and how you can solve them.

1. Central Air Conditioner Smells Like Chemicals

If your air conditioner smells bad when turned on, specifically a chemical scent, isn’t a positive sign. You may also report your:

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

These sweet, chemical odors are frequently a clue that your air conditioner is suffering from a refrigerant leak. Your system relies on this gas to shift heat through copper coils, which can crack over time.

4 Clues You Are Experiencing a Refrigerant Leak

Aside from the strange smell, here are four other clues that you are dealing with a refrigerant leak.

  1. Bubbling or hissing sounds when your air conditioner is cooling.
  2. Ice on refrigerant lines or the evaporator coil.
  3. Difficulty keeping your residence cool or achieving your desired temperature.
  4. Higher energy expenses.

How You Can Take Care of It

A refrigerant leak calls for experienced assistance from a heating and cooling company like Evenaire Heating & Air Conditioning. Your cooling technician will find and mend the leak before recharging your system with refrigerant.

Resolving a refrigerant leak typically costs between $225 and $1,600, according to nationwide averages compiled by HomeAdvisor. Your precise cost will depend on the location and severity of the leak, as well as how much time it needs to fix.

If your air conditioner was installed before 2010, there’s a good chance it uses R-22 or Freon refrigerant. This refrigerant is no longer being made as a result of its harmful effects on the ozone layer. Consequently, repairs can be very expensive so it may be smartest to consider air conditioning installation in this circumstance.

2. Air Conditioner Smells Like Gas

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

How You Can Solve It

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

  • Switching off your gas supply.
  • Opening windows.
  • Evacuating your home promptly.
  • Contacting your gas company without delay.

3. Air Conditioner Smells Musty

Homeowners who reach us to report this situation frequently say their air conditioner smells like feet, dirty socks or a locker room when it’s on. Also referred to as dirty sock syndrome, this smell is typically caused 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 switching to cooling later in the day.

How to Repair It

The best way to prevent dirty sock syndrome is to routinely change your air filter and schedule annual air conditioning maintenance with Evenaire Heating & Air Conditioning. We’ll keep the evaporator coil clean and the drainage system unclogged, as standing water can also create noxious odors.

4. Air Conditioner Smells Like Vinegar

If you are living with air conditioner mildew smell or a strong, vinegar-like odor, it might be prompted by several problems, such as:

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

How to Repair 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 issue, call Evenaire Heating & Air Conditioning at 512-355-1482.

5. Air Conditioner Smells Like Burning Plastic

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

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

Electrical malfunctions should be checked right away to prevent a fire. If you smell burning plastic when your air conditioner is running, switch it off and contact us at 512-355-1482 immediately.

6. Air Conditioner Smells Like Cat Pee

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

How to Solve It

Mycotoxins are hazardous to your health. That’s why it’s important to have a pro like Evenaire Heating & Air Conditioning examine your air conditioner and ductwork and clean it when needed.

Our Professionals Can Get Rid of Unpleasant Air Conditioner Smells Rapidly

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, give us a call at 512-355-1482. We’ll determine the problem quickly and fix it at a fair price.