What types of filters are used in mini-split/ductless air conditioners for small spaces?

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What Types of Filters are Used in Mini-Split/Ductless Air Conditioners for Small Spaces?

What Types of Filters are Used in Mini-Split/Ductless Air Conditioners for Small Spaces?

Mini-split or ductless air conditioners are becoming increasingly popular for cooling small spaces efficiently. The quality of air in your home is crucial for respiratory health, and one of the key components that determines air quality is the type of filter used in your mini-split air conditioner. In this article, we will explore the different types of filters commonly used in mini-split/ductless air conditioners for small spaces.

1. Washable Filters

One type of filter commonly used in mini-split air conditioners is the washable filter. As the name suggests, these filters can be easily removed and washed, making them a convenient option for homeowners. Washable filters are typically made from materials like foam or fiberglass, which can capture large particles such as dust, pollen, and pet dander. However, they may not be as effective in capturing smaller particles or allergens.

2. Electrostatic Filters

Electrostatic filters are another popular choice for mini-split air conditioners. These filters use static electricity to attract and capture airborne particles, including dust, mold spores, and pollen. They are more efficient than washable filters and can effectively improve indoor air quality. Electrostatic filters need to be periodically cleaned to maintain their effectiveness, but they do not require frequent replacement.

3. High-Efficiency Particulate Air (HEPA) Filters

If you have respiratory allergies or asthma, a mini-split air conditioner with a HEPA filter is an excellent choice. HEPA filters are designed to trap microscopic particles and allergens, making them highly effective in providing clean indoor air. These filters can capture up to 99.97% of particles as small as 0.3 microns, including dust mites, pollen, pet dander, and even some bacteria and viruses. However, it is important to note that using a HEPA filter may reduce the airflow in the unit, which could impact the cooling efficiency.

4. Activated Carbon Filters

To eliminate odors, chemicals, and volatile organic compounds (VOCs), mini-split air conditioners can also be equipped with activated carbon filters. These filters contain activated carbon, which has a large surface area that can absorb and trap odorous substances and chemicals. Activated carbon filters can be used in combination with other filters to provide comprehensive air purification.

When choosing a mini-split air conditioner, it is essential to consider the filter type that best suits your needs. Some units come with a standard filter, which can be upgraded to a different type if desired. Regular maintenance, including cleaning or replacing the filter, is crucial to ensure the optimal performance and longevity of your mini-split air conditioner.


In conclusion, the type of filter used in mini-split/ductless air conditioners plays a vital role in maintaining air quality and ensuring a healthy indoor environment. Washable filters, electrostatic filters, HEPA filters, and activated carbon filters are the common types available for mini-split air conditioners. Each filter type has its own advantages and capabilities. Consider your specific air quality needs before choosing the right filter for your mini-split air conditioner.

CALL FOR QUOTE: 1.855.920.1857

For expert advice and assistance in selecting the perfect mini-split air conditioner for your small space, call us at 1.855.920.1857. We provide professional installation services and ensure optimal comfort for your home. Don’t compromise on air quality and cooling efficiency – reach out to us today!

CALL FOR QUOTE: 1.855.920.1857

Give us a call at 1.855.920.1857 for a free consultation and quote. Our team of experts is ready to answer any questions you may have and help you find the best mini-split air conditioning solution for your small space.

CALL FOR QUOTE: 1.855.920.1857

To provide you with a personalized quote and recommendations, contact our knowledgeable team at 1.855.920.1857. We understand the unique requirements of small spaces and can assist you in choosing the right mini-split air conditioner for optimal comfort and air quality in your home.