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What’s That Smell? Identifying Common Aircon Odours

What’s That Smell? Identifying Common Aircon Odours

Have you ever been greeted by a funky or foul smell when entering a room cooled by an aircon unit? It’s a real buzzkill! Aircon odours are often a red flag that your unit needs attending to and can indicate serious underlying problems.

In this article, we will dive into the most common aircon odours and what they might be trying to tell you. So, buckle up and get ready to sniff out some solutions.

1. Musty or mouldy smell

Does your aircon emit a musty or mouldy smell? This scent is one of the most common aircon odours, and it’s not just unpleasant — it’s also a severe health hazard.

When moisture builds up in your unit, it becomes a breeding ground for mould and bacteria, which can exacerbate respiratory issues and allergies. Don’t let this stinky situation linger — regular cleaning and aircon servicing in Singapore is critical to keeping your aircon unit smelling fresh and air quality healthy.

2. Burning smell

Uh-oh, do you smell that? If you catch a whiff of burning from your aircon, it could be a warning sign of an electrical problem. A faulty motor or short circuit could be the culprit. Don’t ignore this warning. Turn off the unit ASAP and get in touch with a professional technician to investigate and fix the issue.

3. Chemical smell

Do you smell something chemical coming from your aircon unit? It could be a sign of a refrigerant leak, which is no joke. Inhaling refrigerant can lead to health problems, so it’s crucial to call for professional help immediately if you detect this odour.

4. Dirty sock smell

Does your aircon smell like a dirty sock? It’s not just your imagination. This unpleasant odour is a common problem caused by bacteria build-up on the evaporator coil. You’ll notice the smell most when you turn on the unit after it’s been off for a while. But fear not. Regular cleaning and maintenance of your aircon unit can prevent this unpleasant odour.

5. Smoky or metallic smell

A smoky or metallic scent coming from your aircon unit could spell trouble. It might be an indication of overheating or a problem with the motor or compressor. Don’t ignore it! Call a technician immediately to diagnose and fix the issue before it causes damage to your aircon system.


Pungent aircon odours are more than just an inconvenience; they might also indicate a serious problem with your system. Regular maintenance and cleaning can help prevent these smells from occurring.

Still, if you do detect one, it’s critical to address it immediately to minimise any potential health and safety issues. If you’re unsure what is causing the smell, having an experienced technician inspect and repair the unit is usually a good idea.

Affordable Aircon Services is a one-stop aircon service centre, providing a full range of services from aircon chemical wash, installation, repair, and maintenance. We offer quality services at an affordable price and ensure our customers receive the best possible service with our friendly and knowledgeable staff. Contact us today to book an appointment and keep your aircon running smoothly!

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