6 Common Air Conditioner Smells Decoded and How to Solve the Problem

April 21, 2021

When your air conditioner is clean and working correctly, you shouldn’t be smelling anything weird. Peculiar air conditioner noises and strange smells are a sign that something is out of whack. If your air conditioner is getting older or you haven’t had maintenance scheduled recently, they can be a sure sign you need professional air conditioning repair in Winnipeg.

Here are six of the most frequent 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, specifically a chemical odor, isn’t a great sign. You may also notice your:

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

These sweet, chemical smells are often a clue that your air conditioner is experiencing a refrigerant leak. Your system needs this gas to transfer heat through copper coils, which can break out over time.

4 Signs You Are Experiencing a Refrigerant Leak

Aside from the odd 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 on refrigerant lines or the evaporator coil.
  3. It’s hard keeping your residence cold or having your programmed temperature.
  4. High utility bills.

How You Can Take Care of It

A refrigerant leak calls for skilled assistance from a heating and cooling company like Kirkfield Heating & Air Conditioning. Your cooling pro will pinpoint and fix the leak before recharging your AC with refrigerant.

Repairing a refrigerant leak often costs between $225 and $1,600, based on nationwide averages put together by HomeAdvisor. Your total cost will depend on the location and severity of the leak, as well as how long it requires to fix.

If your air conditioner was installed prior to 2010, it’s likely it uses R-22 or Freon refrigerant. This refrigerant is no longer being made because of its negative effects on the ozone layer. Due to this, repairs can be very expensive so it may be best to do air conditioning installation in this instance.

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 warn you when there’s a leak, as the gas can be fatal in heavy concentrations.

How You Can Fix It

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

  • Shutting off your gas supply.
  • Opening windows.
  • Leaving your home as soon as possible.
  • Call your gas company immediately.

3. Air Conditioner Smells Musty

People who contact us regarding this problem frequently report their air conditioner smells like feet, dirty socks or a locker room when it runs. Also known as dirty sock syndrome, this smell is usually linked to 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 common in climates where you need heating at night and during the morning before transitioning to cooling during the afternoon.

How to Solve It

The best method for preventing dirty sock syndrome is to regularly get a new air filter and schedule routine air conditioning maintenance with Kirkfield Heating & Air Conditioning. We’ll keep the evaporator coil clean and the drainage system flowing, because stagnant water can also lead to noxious odors.

4. Air Conditioner Smells Like Vinegar

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

  • A dirty filter
  • Excess 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, it’s time to replace it. If that doesn’t resolve the problem, contact Kirkfield Heating & Air Conditioning at 204-272-8128.

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 number of things wrong. These involve:

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

Electrical problems should be checked immediately to avoid a fire. If you notice burning plastic when your air conditioner is operating, switch it off and call us at 204-272-8128 right away.

6. Air Conditioner Smells Like Cat Pee

An overpowering ammonia odor means there might be mold present inside 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 wellness. That’s why it’s important to have a professional like Kirkfield Heating & Air Conditioning check your air conditioner and ductwork and clean it when necessary.

Our Professionals Can Take Care of Strange Air Conditioner Smells Quickly

You deserve to be cozy in your residence and shouldn’t have an air conditioner that smells bad. When you need relief from your noxious air conditioner, reach us at 204-272-8128. We’ll figure out the trouble quickly and take care of it at a competitive.