When your air conditioner is fresh and working properly, it’s expected you won’t be smelling anything strange. Unexpected air conditioner noises and odd smells are a sign that something is out of whack. If your air conditioner is old or you haven’t had maintenance done lately, they can be a clear sign you need skilled air conditioning repair in Wilmington.

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, it isn’t a good sign. You may also notice your:

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

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

Four signs you have a refrigerant leak.

Besides the strange smell, here are four other hints that you are dealing with 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 comfortable or having your programmed temperature.
  4. Increasing electrical costs.

How You Can Fix It

A refrigerant leak calls for professional support from a heating and cooling company like Brandywine Heating & Air. Your cooling specialist will find and fix the leak before recharging your air conditioner with refrigerant.

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

If your air conditioner was installed before 2010, there’s a high probability it runs on R-22 or Freon refrigerant. This refrigerant is no longer being produced due to its harmful effects on the ozone layer. Because of this, repairs can be extremely expensive so it may be smartest 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 good likelihood you have a natural gas leak in your residence. Natural gas has a sulfur-like additive to signal you when there’s a leak, as the gas can be fatal in large amounts.

How You Can Solve It

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

  • Shutting off your gas supply.
  • Opening windows.
  • Going outside as soon as possible.
  • Contacting your gas company immediately.

3. Air Conditioner Smells Musty

Individuals who call us about this issue often say their air conditioner smells like feet, dirty socks or a locker room when it runs. Also called dirty sock syndrome, this smell is frequently 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 often seen in locations where you need heating at night and during the morning before transitioning to cooling during the afternoon.

How to Solve It

The best approach for preventing dirty sock syndrome is to regularly get a new air filter and schedule yearly air conditioning maintenance with Brandywine Heating & Air. We’ll keep the evaporator coil clean and the drainage system flowing, because excess water can also result in unpleasant odors.

4. Air Conditioner Smells Like Vinegar

If you are experiencing air conditioner mildew smell or a strong, vinegar-like odor, it can be caused by several situations, like:

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

How to Repair It

Check 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 problem, contact Brandywine Heating & Air at 302-261-3596.

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 should have lubrication.
  • Broken fan belt.
  • Electrical problem.

Electrical problems should be inspected immediately to prevent a fire. If you smell burning plastic when your air conditioner is on, turn it off and contact us at 302-261-3596 right away.

6. Air Conditioner Smells Like Cat Pee

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

How to Fix It

Mycotoxins are hazardous to your health. That’s why it’s important to have a professional like Brandywine Heating & Air check your air conditioner and ductwork and clean it when needed.

Our Pros Can Eliminate Strange Air Conditioner Smells Fast.

You deserve to be comfortable in your house and shouldn’t have an air conditioner that smells bad. When you are seeking relief from your smelly air conditioner, give us a call at 302-261-3596. We’ll diagnose the problem quickly and fix it at a fair price.