Why Air Conditioner Smells Musty and How To Fix It

Why Air Conditioner Smells Musty and How To Fix It


Is your air conditioner giving off a musty smell? Any AC units in good condition do not smell musty in the first place. It is a sign that something is wrong, and you should not put up with it. Here are a few reasons your AC unit might be giving off that unpleasant smell.


Why is there a smell coming from an air conditioner?


If you’ve ever been in a room where the air conditioner smells musty, you know how unpleasant it can be. An air conditioner that smells musty is also known as having dirty sock syndrome, and it’s a common problem in Heating, Ventilation, and Air Conditioning (HVAC) appliances. But, how come your AC is giving off a musty smell?


A buildup of fungus and mould in AC drain line or pipe


The inside of the drain line or pipe is dark, damp, and has the ideal temperature for mould growth. That makes it a common breeding ground for fungus. Unfortunately, this also means running your air conditioner spreads mould as well as releases stale stench into your home.


Moisture in a filthy AC filter


An essential part of how AC works is the air filter, which helps to remove dust, pollen, and other airborne particulates from the air. A clean air filter is essential for maintaining good indoor air quality and preventing damage to the air conditioner. Over time, dirt can clog the filter.


In addition, it is possible for moisture to build up in the filter. As you can guess, moisture and buildup of dirt and dust is a perfect recipe for dirty sock syndrome.


Dirty evaporator coils


The evaporator coils are an essential part of the air conditioner. They are responsible for removing heat from the air in your home. Over time, the coils can become coated with dust and dirt. It will reduce the efficiency of the AC unit and create conditions ripe for mould growth.


How to get the musty smell out of the air conditioner?


The smell can be a real annoyance because it’s in an enclosed space like an air conditioner. The good news is that you can do a few things to get rid of the musty smell from your air conditioner and make your home smell fresh again.


Clean AC filter every two weeks


The best way to get rid of the musty smell is to be proactive. That means regularly cleaning your air conditioner filter. Depending on your filter type, you should clean it every two weeks or so. Doing this is also not rocket science, and you can easily do it yourself. Find out how to remove the AC filter in the user’s manual and clean it with warm, soapy water. Dry it thoroughly before you attach the filter back.


Follow manufacturers’ recommendations about regular aircon service

aircon service performing aircon regular or chemical cleaning


Another thing you should do is to prevent the problem in the first place. Most AC manufacturers recommend users have regular maintenance for their AC at least once a year with a certified aircon service contractor. An aircon service includes a visual inspection of the unit as well as regular cleaning.


Aircon chemical wash for a thorough cleaning


This more thorough cleaning will remove the mould or dust trapped in your air conditioning system. In return, your air conditioner will circulate fresher air again. It is possible because aircon chemical cleaning typically involves using special solutions and jet wash to clean your units. It is a good idea to schedule chemical cleaning for your aircon once in a while, especially for old units or AC units that do not receive routine maintenance.


The bottom line


Dirty sock syndrome in an HVAC appliance is a real problem, but there are ways to prevent it. The culprits are mould growth and the accumulation of dirt in your AC system. A routine AC filter cleaning, regular professional maintenance, and an aircon chemical wash will help prevent them from happening.


At Purer Fresher Air, we offer those services that will clean your AC unit and eliminate the musty smell for good. Contact us at +65 9830 8224 to learn more about our services or to schedule an appointment.

Get Purer Fresher Air With Us Today!