How Often Should You Change Your Air Conditioner Filter

When was the last time you changed your AC filter? The truth is that a lot of homeowners forget about it. Changing the air conditioning filter not only ensures your AC works at its best but also helps improve air quality and keep energy bills low. So, how often should you change AC filters? Well, there is no right answer because it depends on several factors.

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As most air con Melbourne systems have replaceable filters, it is essential to change the filters on time to avoid high energy consumption, shorter lifespan, and unnecessary repairs. It is because an AC filter collects dust and other contaminants (pet dander, hairs, mould, etc.) in the air, which accumulates over time and blocks the normal airflow. If you do not change air filters regularly, it could lead to your air conditioner producing foul smells and other issues.

Read More: 5 Common Reasons Why Your Air Conditioner Smells Bad and How To Remove Foul AC Smells.

So, How Often Should I Change My Air Filter?

The right answer: it depends!

How regularly you need to replace air filters depend on the following factors:

  • Air filter quality
  • Number of members in the house
  • Indoor air quality
  • Number of pets in the house
  • Anyone has allergies or asthma
  • Size of the house
  • Air pollution level in the area you live and construction around it

If you have cheaper air filters, it is typically recommended to change them after every 30 days. For high-quality air filters, experts recommend changing them after every 3-6 months. However, it is essential you regularly clean them once every month. If someone in your home has allergies or asthma, you’ll want to change air filters at least once in a month to ensure indoor air quality is at its best.

Why Are Air Conditioner Filters Important?

An air filter might look like something that doesn’t have a big role to play in an expensive unit; it actually supersedes the expectations. No other factor affects the efficiency of your air conditioning system more than a clogged air filter. It is also important because it traps and filters out contaminants in the air, such as:

  • Mould
  • Dust
  • Debris
  • Fibres
  • Pollen
  • Wood, metal, and paint particles
  • Bacteria & microorganisms
  • Animal fur
  • Pet dander
  • Human hair

Given that Australians spend about 90% of their time indoors, an air conditioner needs to be working in its top condition to ensure indoor air is healthy and free of pollutants and other contaminants. That’s why cleaning and/or replacing air filters regularly is of paramount importance.

Common Signs You Need To Change Your AC Filter

Given that a clean air filter is compulsory for a well-functioning air conditioner, here are 5 telltale signs that indicate you need to change your AC filter:

SIGN #1: There is Visible Dirt on the Filter and Around Air Vents

Although it is an obvious sign, many homeowners unintentionally and intentionally neglect it. After all, we tend not to do anything as long as it is working fine. If you notice the air filters are gray and dirty, replace them or clean them if you have a reusable air filter.

You also need to look for the dust around air vents because air filters start to release dirt and contaminants when they are clogged. Dirt around air vents doesn’t necessarily mean you need to replace the filter; it can also mean clogged air ducts.

SIGN #2: A Spike In Energy Bills

Replacing a clogged air filter can reduce your AC’s energy consumption by 5% to 15%. A clogged air filter will make your air conditioner work harder and longer to achieve a desired temperature and maintain it. Hence, it will consume more energy than before. Look for a sudden increase in energy bills as dirty air filters might be the culprit behind it.

SIGN #3: Mouldy or Musty Odour

Air filters trap tiny particles in the air. They accumulate over time (without proper cleaning or replacing) and cause mould and mildew growth when exposed to moisture. As a result, your air con starts to smell musty.

SIGN #4: Increase In Allergy Symptoms

Have you recently noticed an increase in allergy symptoms like red eyes, sore throat, or running nose? It might be happening due to a clogged air filter that has been creating pressure on the AC unit to force trapped allergens and dust inside the filter into your home.

SIGN #5: Reduced Cooling Efficiency

Besides skyrocketing energy bills, you might also notice that your air conditioner is taking longer to cool your place or failing to achieve & maintain a desirable temperature. It is because a clogged filter will reduce airflow and make it difficult for your AC to function properly.

Read In Detail: 6 Signs You Need To Change Your AC Filter.

3 Important Reasons To Change Your AC Filters

If you skip regular maintenance and delay cleaning & changing air filters of your AC, you could be missing the following benefits:

REASON #1: Consistent Performance   

The role of an AC filter is to trap allergens and particles from the air and stop them from reaching different essential components of the system. If it fails to do it, it could affect the performance of your air conditioner. Cleaning and replacing air filters prevent restricted airflow and high energy bills.

REASON #2: Good Indoor Air Quality

A clogged air filter restricts airflow and forms condensation, which can most likely cause the growth of mould and mildew on the filter. As a result, a musty smell comes out of the unit, which is both unpleasant and unhealthy for you.

REASON #3: Health Concerns

According to WHO, living in a mould-infested space increases the risk of experiencing health problems such as asthma, respiratory infections, and allergic rhinitis. Regularly cleaning and replacing air con filters reduces the risk of mould and other impurities from being circulated around the house.

Consult With Air Conditioning Specialists

If your air con is not cooling efficiently or consuming too much energy, maybe the system requires a comprehensive service. You can contact ComfyHome for the best AC service in Melbourne. With decades of valuable experience in the AC industry, we will make your cooling unit good as new.

A ONE-STOP SOLUTION For All Your Heating & Cooling Needs