Best Split System Air Conditioners For Air Quality and Allergen Filtration

At AirDirect2U, we offer a collection of split system air conditioners from top brands like Hisense, Mitsubishi Electric and Fujitsu, all known for energy efficiency, advanced technology, and reliable performance.

For those prioritising allergen filtration and improved indoor air quality — crucial for allergy sufferers or households with respiratory concerns — certain models stand out. We've highlighted the best split system air conditioners from our range that excel in filtering allergens and enhancing air quality, based on their features, technology, and suitability for various room sizes.

Why allergen filtration and air quality matter

Split system air conditioners are popular in Australia for their energy efficiency, quiet operation, and ability to heat and cool single rooms or small spaces. Beyond temperature control, advanced models incorporate air purification technologies that tackle allergens like dust, pollen, pet dander, and even volatile organic compounds (VOCs). These features are especially valuable for creating healthier indoor environments, reducing allergy symptoms, and improving overall well-being. When selecting an air conditioner for air quality, look for:

• High-efficiency filters: HEPA or specialised allergen filters that capture fine particles.
• Plasma or ioniser technology: Neutralises airborne pollutants and odors.
• Dehumidification modes: Reduces mold and mildew by controlling humidity.
• Self-cleaning functions: Prevents mold buildup on internal components.
• Eco-friendly refrigerants: Like R32, which is energy-efficient and environmentally safe.

With these criteria in mind, let’s dive into the top picks from our split system collection.

Top picks for allergen filtration and air quality

1. Mitsubishi Electric MSZ-AP Series (2.5kW–8kW+)

Best for comprehensive air purification

The Mitsubishi Electric MSZ-AP Series is a standout for its advanced air purification capabilities. Available in capacities from 2.5kW (ideal for small rooms like bedrooms, ~10–25 sqm) to 8kW+ (suitable for large open-plan areas), this reverse cycle split system combines sleek design with cutting-edge technology. Its Nano Platinum Filter captures dust, allergens, and bacteria, while the Plasma Quad Plus Filter (available in select models) neutralises viruses, mold spores, and microscopic particles as small as 2.5 microns. This makes it an excellent choice for allergy sufferers.

• Key features:
  • Plasma Quad Plus technology for superior allergen and pollutant neutralization.
  • Quiet operation, perfect for bedrooms or home offices.
  • Wi-Fi connectivity for remote control via smartphone.
  • Energy-efficient inverter technology reduces power consumption.
  • Self-cleaning functions to maintain internal hygiene.
• Best for: Small to large rooms, especially for households with asthma or allergy concerns.
• Warranty: 5 years, ensuring long-term reliability.

Why It Excels: The MSZ-AP Series goes beyond basic filtration, offering hospital-grade air purification. Its ability to tackle a wide range of airborne contaminants makes it ideal for maintaining a clean, healthy indoor environment.

2. Fujitsu Comfort Range (2.5kW–8kW+)

Best for energy efficiency and air quality

Fujitsu’s Comfort Range is designed for energy-conscious households seeking reliable air quality improvements. Available in various capacities (2.5kW for small rooms, 5–7kW for medium spaces like master bedrooms, and 8kW+ for larger areas), these wall-mounted units use Apple-Catechin Filters to trap dust and pollen while inhibiting bacterial growth. The Ion Deodorisation Filter neutralises odors, ensuring fresh air output. Additionally, the units feature a dehumidification mode to prevent mold growth, a common allergen trigger.

• Key features:
  • Apple-Catechin and Ion Deodorization Filters for allergen and odor control.
  • Eco-friendly R32 refrigerant for lower energy consumption.
  • Easy installation with a supporting bar and frame.
  • Quiet operation and energy-saving modes.
  • Reverse cycle for year-round comfort.
• Best for: Small to large rooms, particularly in eco-conscious households.
• Warranty: 5 years, with straightforward maintenance requirements.

Why It Excels: Fujitsu’s dual filtration system and dehumidification capabilities make it a strong contender for allergy-prone environments. Its energy efficiency also keeps running costs low, a bonus for frequent use.

3. Hisense J Series 2.5kW Reverse Cycle Split System (HAWJ9KR)

Best budget-friendly option for small spaces

For those on a budget, the Hisense J Series 2.5kW model is a compelling choice for small rooms (10–25 sqm), such as bedrooms or home offices. While more affordable, it doesn’t skimp on air quality features. The unit includes a high-density filter that captures dust and allergens, and its frosting and defrosting cycle ensures a clean internal system, reducing mold risk. Voice control and Wi-Fi connectivity add convenience, allowing you to adjust settings remotely to maintain optimal air quality.

• Key Features:
  • High-density filter for effective allergen capture.
  • Self-cleaning cycle to prevent mold and bacteria buildup.
  • Eco-friendly R32 refrigerant for energy savings.
  • Voice control via Wi-Fi for hands-free operation.
  • Compact design for easy installation.
• Best For: Small rooms on a budget, ideal for renters or small apartments.
• Warranty: 7 years, offering exceptional value.

Why It Excels: The Hisense J Series delivers solid air quality features at a lower price point, with a longer warranty than competitors, making it a cost-effective solution for allergy-conscious buyers.

How to choose the right model for your needs

Selecting the best split system air conditioner for allergen filtration depends on your room size, budget, and specific air quality needs. Here’s a quick guide:

• Room size: Use our kW filters to match capacity to your space (e.g., 2.5kW for 10–25 m², 5–7kW for 25–50 m², 8kW+ for larger areas). Oversizing or undersizing can reduce efficiency and air quality performance. For complex spaces, request a heat load calculation from AirDirect2U.
• Filtration needs: If severe allergies or asthma are concerns, prioritise the Mitsubishi Electric MSZ-AP Series for its Plasma Quad Plus Filter. For general allergen control, Fujitsu or Toshiba models suffice.
• Budget: The Hisense J Series offers excellent value for small spaces, while Mitsubishi and Fujitsu cater to premium buyers.
• Smart features: Wi-Fi and voice control (available in Hisense and Mitsubishi models) allow remote monitoring of air quality settings, ideal for busy households.
• Maintenance: All models feature washable filters or self-cleaning functions, but regular servicing by a licensed technician is essential to maintain warranty and performance.

Installation and maintenance tips

To maximise air quality benefits, ensure proper installation and upkeep:

• Hire a licensed Installer: AirDirect2U offers installation services with qualified technicians. Proper setup ensures optimal airflow and filtration. Installation costs typically range from ~$699-$1299, depending on complexity.
• Regular servicing: Clean or replace filters every 3–6 months and schedule annual maintenance to keep coils and refrigerant levels in check.
• Warranty compliance: Follow manufacturer guidelines, such as keeping air inlets/outlets clear and using licensed installers, to maintain the 5–7-year warranties.
• Smart usage: Use dehumidification modes during humid months to prevent mold, and leverage eco-modes to save energy without compromising air quality.

Conclusion

For allergen filtration and improved air quality, the Mitsubishi Electric MSZ-AP Series leads with its advanced Plasma Quad Plus technology, ideal for allergy-prone households. Fujitsu’s Comfort Range balances energy efficiency and robust filtration. For budget-conscious buyers, the Hisense J Series 2.5kW model delivers impressive air quality features at an affordable price.

Explore these options at AirDirect2U to find the perfect split system for your home, and enjoy cleaner, healthier air year-round.