Why Air Conditioner Smells

If you’ve ever wondered why your air conditioner has a strange smell, you’re not alone. Many people notice a musty or mildew smell coming from their AC unit, and while it’s not the most pleasant scent, it’s not necessarily cause for alarm. In most cases, the smell is simply due to a buildup of dirt and dust in the unit’s coils or drain pan. Over time, these materials can begin to rot, which causes the unpleasant odour.

Why does my air conditioner smell?

There are a few reasons why your air conditioner may smell. Reach out All Climate HVAC if you have a central AC unit, the problem may be with the ductwork. Dirty ducts can circulate musty sells throughout your home. If the problem is with your AC unit itself, the coils may be dirty. Clean the coils, turn off your AC unit and remove the access panel. Use a brush attachment on your vacuum to clean the coils. You can also clean them with a coil cleaner, which you can buy at most hardware stores.

Bad air quality

Bad air quality is a serious problem that can have harmful effects on your health. Poor air quality can cause respiratory problems, headaches, and fatigue. It can also aggravate existing medical conditions such as asthma and allergies.

When the air quality is poor, it means there are high levels of pollutants in the air. These pollutants can come from a variety of sources, including power plants, factories, cars, and even household cleaning products.

The best way to protect yourself from the dangers of poor air quality is to stay indoors as much as possible. If you must go outside, be sure to wear a mask or respirator to filter out harmful particles. You should also avoid exercising outdoors when the air quality is poor.

The musty smell

When you turn on your air conditioner, does it smell musty? If so, don’t worry—you’re not alone. Many people notice a musty smell when they first start using their air conditioner for the season. But what causes this smell, and how can you get rid of it?

The musty smell is caused by mould or mildew growing in the unit. When the air conditioner is turned off, moisture from the air condenses on the cool surfaces inside the unit. This provides an ideal environment for mould and mildew to grow.

Fortunately, there are a few things you can do to get rid of the musty smell:

-Clean or replace your air filter. A dirty filter can restrict airflow and cause the unit to stink.

-Clean the coils.

The burning smell

When you turn on your air conditioner for the first time each season, you may notice a burning smell. This is cause for alarm as it may be an indication that your air conditioner is malfunctioning.

If you notice a burning smell coming from your air conditioner, it’s important to shut it off immediately and contact a trained technician to get more details. The burning smell could be caused by a number of issues, including electrical problems or a build-up of dirt and debris. Ignoring the problem could lead to more serious damage to your air conditioner or even a fire.

If you’re concerned about the possibility of a burning smell coming from your air conditioner, it’s best to have it inspected by a professional before turning it on for the season.


When it comes to air conditioners, one of the most common complaints is that they can start to smell bad over time. There are a few different reasons why this might happen, and fortunately, there are also a few different ways to fix the problem.

One of the most common causes of a smelly air conditioner is mould or mildew. This can happen if the unit isn’t cleaned regularly, or if it’s been turned off for an extended period of time. Mould and mildew thrive in damp, dark environments, so it’s important to keep your air conditioner clean and dry. You can clean the unit yourself with a mixture of water and vinegar, or you can hire a professional to do it for you.

Another possible cause of a smelly air conditioner is a dirty filter.

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