Shop Efficient System 3 Aircons

Discover our exceptional collection of inverter System 3 aircon units, designed to provide powerful and efficient cooling for your home or office. With advanced inverter technology, these systems offer precise temperature control, ensuring comfort in every room. Whether you need to cool a large living room or multiple rooms, Gain City's inverter System 3 aircon units from Gain City offer a perfect balance of performance and energy efficiency.

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  1. HISENSE SYSTEM 3 AIRCON AMW70TERJ/3XAMS-09
    HISENSE SYSTEM 3 AIRCON AMW70TERJ/3XAMS-09

    AMW70TERJ/3XAMS-09

    3X9000 BTU
    S$3,039.00 U.P. S$3,342.90
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  2. HISENSE SYSTEM 3 AIRCON AMW90TERJ/3XAMS-09
    HISENSE SYSTEM 3 AIRCON AMW90TERJ/3XAMS-09

    AMW90TERJ/3XAMS-09

    3X9000 BTU
    S$3,189.00 U.P. S$3,507.90
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  3. MIDEA SYSTEM 3 AIRCON MEZ-3M28E/3XMEZID-09
    MIDEA SYSTEM 3 AIRCON MEZ-3M28E/3XMEZID-09

    MEZ-3M28E/3XMEZID-09

    3x9000 BTU
    Special Online Promotion from December 2, 2025 8:30 AM to December 28, 2025 11:59 PM
    S$3,199.00 U.P. S$4,210.80 Until December 28, 2025 11:59 PM
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  4. HAIER SYSTEM 3  AIRCON-5 TICKS 4U65RH1SRA/3XASW25S2SF2FA2
    HAIER SYSTEM 3 AIRCON-5 TICKS 4U65RH1SRA/3XASW25S2SF2FA2

    4U65RH1SRA/3XASW25S2SF2FA2

    3X9000 BTU

    Product Description

    The Haier System 3 Aircon offers enhanced cooling with a 5-tick energy efficiency rating, making it ideal for eco-conscious users seeking effective climate control. It features a capacity of 3X9000 BTU, R32 climate-friendly refrigerant, quiet operation at 19dB(A), 3D airflow, and built-in WiFi for smart connectivity.

    Key Features

    • Energy Efficiency: This air conditioner boasts a 5-tick energy efficiency rating, ensuring lower energy consumption and cost savings.
    • Climate Friendly: Utilizes R32 refrigerant, which is more environmentally friendly.
    • Quiet Operation: Operates at a low noise level of 19dB(A), providing a peaceful environment.
    • 3D Airflow: Ensures even distribution of air throughout the room for optimal comfort.
    • Built-in Wifi: Allows for convenient remote control and monitoring via a smartphone app.

    Product Specifications

    • Capacity: 3X9000 BTU
    • NEA TICK: 5 Ticks
    • Other Features: R32 Climate Friendly
    • Other Features: Quiet Operation - 19dB(A)
    • Other Features: 3D Airflow
    • Other Features: Built-in Wifi
    • Cooling Capacity: 6.22kW
    • Energy Efficiency Rating: Excellent
    • Annual Energy Consumption: 2517kWh
    • Split Type: Inverter
    • Tested in accordance with ISO 15042

    Ideal For

    The Haier System 3 Aircon is ideal for eco-conscious users seeking effective climate control.

    S$3,199.00 U.P. S$3,518.90 $100 OFF EVERY $1000 SPENT
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  5. HISENSE SYSTEM 3 AIRCON AMW90TERJ/2XAMS-09/1XAMS-12
    HISENSE SYSTEM 3 AIRCON AMW90TERJ/2XAMS-09/1XAMS-12

    AMW90TERJ/2XAMS-09/1XAMS-12

    2X9000 & 1X12000 BTU
    S$3,209.00 U.P. S$3,529.90
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  6. GREE SYSTEM 3 AIRCON GWCD-MS21/O-3XGWC-09CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS21/O-3XGWC-09CHARMO

    GWCD-MS21/O-3XGWC-09CHARMO

    3X9000 BTU
    S$3,219.00 U.P. S$3,862.80 $100 OFF EVERY $1000 SPENT
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  7. HISENSE SYSTEM 3 AIRCON AMW90TERJ/1XAMS-09/2XAMS-12
    HISENSE SYSTEM 3 AIRCON AMW90TERJ/1XAMS-09/2XAMS-12

    AMW90TERJ/1XAMS-09/2XAMS-12

    1X9000 & 2X13000 BTU
    S$3,239.00 U.P. S$3,562.90
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  8. GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-12CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-12CHARMO

    GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-12CHARMO

    2X9000 & 1X12000 BTU
    S$3,249.00 U.P. S$3,898.80 $100 OFF EVERY $1000 SPENT
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  9. HAIER SYSTEM 3  AIRCON-5 TICKS 4U65RH1SRA/2XASW25S2SF2FA2/1XASW35S2SF2FA2
    HAIER SYSTEM 3 AIRCON-5 TICKS 4U65RH1SRA/2XASW25S2SF2FA2/1XASW35S2SF2FA2

    4U65RH1SRA/2XASW25S2SF2FA2/1XASW35S2SF2FA2

    2X9000-1X12000 BTU
    S$3,269.00 U.P. S$3,595.90 $100 OFF EVERY $1000 SPENT
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  10. HISENSE SYSTEM 3 AIRCON AMW90TERJ/2XAMS-09/1XAMS-18
    HISENSE SYSTEM 3 AIRCON AMW90TERJ/2XAMS-09/1XAMS-18

    AMW90TERJ/2XAMS-09/1XAMS-18

    2X9000 & 1X18000 BTU
    S$3,279.00 U.P. S$3,606.90
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  11. HISENSE SYSTEM 3 AIRCON AMW90TERJ/1XAMS-09/1XAMS-12/1XAMS-18
    HISENSE SYSTEM 3 AIRCON AMW90TERJ/1XAMS-09/1XAMS-12/1XAMS-18

    AMW90TERJ/1XAMS-09/1XAMS-12/1XAMS-18

    1X9000, 1X12000 & 1X18000 BTU
    S$3,299.00 U.P. S$3,628.90
    Add to Wish List
  12. GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-18CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-18CHARMO

    GWCD-MS21/O-2XGWC-09CHARMO-1XGWC-18CHARMO

    2X9000 & 1X18000 BTU
    S$3,299.00 U.P. S$3,958.80 $100 OFF EVERY $1000 SPENT
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  13. GREE SYSTEM 3 AIRCON GWCD-MS21/O-3XGWC-12CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS21/O-3XGWC-12CHARMO

    GWCD-MS21/O-3XGWC-12CHARMO

    3X12000 BTU
    S$3,319.00 U.P. S$3,982.80 $100 OFF EVERY $1000 SPENT
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  14. HAIER SYSTEM 3  AIRCON-5 TICKS 4U65RH1SRA/2XASW25S2SF2FA2/1XASW50S2SF2FA2
    HAIER SYSTEM 3 AIRCON-5 TICKS 4U65RH1SRA/2XASW25S2SF2FA2/1XASW50S2SF2FA2

    4U65RH1SRA/2XASW25S2SF2FA2/1XASW50S2SF2FA2

    2X9000-1X18000 BTU

    Product Description

    The Haier System 3 Air Conditioner is a high efficiency climate control appliance designed for optimal cooling performance. With a 5 tick energy efficiency rating, it ensures reduced energy consumption while providing powerful cooling with a capacity of 2x9000 BTU and 1x18000 BTU. Key features include R32 climate friendly refrigerant, quiet operation at 19dB(A), 3D airflow, and built in WiFi for smart connectivity. Ideal for maintaining a comfortable indoor environment with minimal energy usage.

    Key Features

    • Capacity: Features a dual 9000 BTU and a single 18000 BTU unit, providing efficient cooling for various room sizes.

    • Energy Efficiency: Achieves a 5 Ticks NEA rating, ensuring low energy consumption and cost savings.

    • Climate Friendly: Utilizes R32 refrigerant, which is more environmentally friendly compared to traditional options.

    • Quiet Operation: Operates at a low noise level of 19dB(A), ensuring a peaceful environment.

    • 3D Airflow: Distributes air evenly throughout the room for consistent comfort.

    • Built in Wifi: Allows for remote control and monitoring via a smartphone app, enhancing convenience.

    Product Specifications

    Specifications:

    • Capacity:

      • Cooling Capacity: 2x9000 1x18000 BTU

    • Features:

      • Airflow Type: 3D Airflow

      • Dehumidification: No

      • Auto Clean Function: No

      • Sleep Mode: No

      • Remote Control: Yes

      • Timer: No

    • Noise Level:

      • Indoor Unit: 19 dB(A)

    • Energy Efficiency:

      • Energy Star Rating: Yes

    • Connectivity:

      • WiFi Connectivity: Yes

    Ideal For

    Ideal for those looking for an energy efficient air conditioning solution with quiet operation and built in WiFi.

    S$3,319.00 U.P. S$3,650.90 $100 OFF EVERY $1000 SPENT
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  15. HAIER SYSTEM 3  AIRCON-5 TICKS 4U65RH1SRA/1XASW25S2SF2FA2/2XASW35S2SF2FA2
    HAIER SYSTEM 3 AIRCON-5 TICKS 4U65RH1SRA/1XASW25S2SF2FA2/2XASW35S2SF2FA2

    4U65RH1SRA/1XASW25S2SF2FA2/2XASW35S2SF2FA2

    1X9000-2X12000 BTU

    Product Description

    The Haier System 3 Aircon efficiently cools spaces with a 5 ticks energy efficiency rating, providing optimal comfort while saving on energy costs. It features R32 climate friendly refrigerant, quiet operation at 19dB(A), 3D airflow, and built in WiFi for smart control.

    Key Features

    • Energy Efficiency: The Haier System 3 Aircon boasts a 5 ticks energy efficiency rating, ensuring optimal cooling while saving on energy costs.
    • Climate Friendly: Utilizes R32 refrigerant, which is more environmentally friendly compared to traditional options.
    • Quiet Operation: Operates at a low noise level of 19dB(A), providing a peaceful environment.
    • 3D Airflow: Ensures even distribution of air throughout the room for consistent comfort.
    • Built in Wifi: Allows for convenient control and monitoring of the air conditioner remotely.
    • Efficient Cooling: Suitable for cooling spaces efficiently, providing comfort in various room sizes.

    Product Specifications

    Specifications:

    • Capacity:
      • Cooling Capacity: 1x9000 2x12000 BTU
    • Features:
      • Dehumidification: Yes
      • Auto Clean Function: Yes
      • Sleep Mode: Yes
      • Remote Control: Yes
      • Timer: Yes
      • Built in Wifi: Yes
    • Noise Level:
      • Indoor Unit: 19 dB(A)
    • Energy Efficiency:
      • Energy Efficiency Ratio (EER): 5 ticks
      • Energy Star Rating: 5 ticks

    Ideal For

    Suitable for cooling spaces efficiently.

    S$3,329.00 U.P. S$3,661.90 $100 OFF EVERY $1000 SPENT
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  16. GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-12CHARMO-1XGWC-18CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS21/O-2XGWC-12CHARMO-1XGWC-18CHARMO

    GWCD-MS21/O-2XGWC-12CHARMO-1XGWC-18CHARMO

    2X12000 & 1X18000 BTU
    S$3,369.00 U.P. S$4,042.80 $100 OFF EVERY $1000 SPENT
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  17. DAIKIN SYSTEM 3 AIRCON - WIFI MKM50ZVMG/3XCTKM25ZVMG
    DAIKIN SYSTEM 3 AIRCON - WIFI MKM50ZVMG/3XCTKM25ZVMG

    MKM50ZVMG/3XCTKM25ZVMG

    3X9000 BTU
    S$3,379.00 U.P. S$4,054.80
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  18. HAIER SYSTEM 3  AIRCON-5 TICKS 4U80SH1SRA/3XASW25S2SF2FA2
    HAIER SYSTEM 3 AIRCON-5 TICKS 4U80SH1SRA/3XASW25S2SF2FA2

    4U80SH1SRA/3XASW25S2SF2FA2

    3X9000 BTU

    Product Description

    The Haier System 3 Aircon offers advanced cooling technology with a 5 tick energy efficiency rating, perfect for home or business use. Enjoy modern design and smart control features.

    Key Features

    • Energy Efficient: Features a 5 tick rating for optimal power use.
    • Smart Control: WiFi connectivity for easy remote operation.
    • Quiet Operation: Designed to run quietly in any setting.
    • Versatile Installation: Suitable for various room types.
    • Modern Design: Sleek and stylish appearance for any decor.
    • Reliable Performance: Durable and consistent cooling.

    Product Specifications

    Specifications:

    • Capacity:
      • Cooling Capacity: 3 x 12,000 BTU
    • Features:
      • Airflow Type: Turbo
      • Dehumidification: No
      • Auto Clean Function: Yes
      • Sleep Mode: Yes
      • Remote Control: Yes
    • Energy Efficiency:
      • Energy Efficiency Ratio (EER): Not Provided
      • Energy Star Rating: Yes
    • Connectivity:
      • WiFi Connectivity: Yes

    Ideal For

    Suitable for residential or commercial spaces.

    S$3,409.00 U.P. S$3,749.90 $100 OFF EVERY $1000 SPENT
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  19. HITACHI SYSTEM 3 AIRCON RAM-Z30C3MS/3XRAK-ZJ10CMS
    HITACHI SYSTEM 3 AIRCON RAM-Z30C3MS/3XRAK-ZJ10CMS

    RAM-Z30C3MS/3XRAK-ZJ10CMS

    3X9000 BTU

    Product Description

    The Hitachi System 3 Aircon RAM-Z30C3MS/3XRAK-ZJ10CMS is a high-performance air conditioning system designed for efficient cooling. It features a capacity of 2x9000 BTU and 1x12000 BTU, ensuring optimal climate control for various room sizes. The system is equipped with advanced technologies such as FrostWash, Nano Titanium Stainless Pre-Filter, and PM 2.5 Wasabi Air Purifying Filter, providing clean and fresh air. Additionally, it uses the eco-friendly R32 refrigerant system and has a 5-tick NEA energy efficiency rating, making it both powerful and energy-efficient. The product comes with a 1-year warranty.

    Key Features

    • Capacity: 2X9000 & 1X12000 BTU for efficient cooling.
    • NEA TICK: 5 Ticks for energy efficiency.
    • FrostWash: Innovative cleaning technology for maintaining air quality.
    • Nano Titanium Stainless Pre-Filter: Advanced filtration for cleaner air.
    • PM 2.5 Wasabi Air Purifying Filter: Removes fine particles for healthier air.
    • R32 Refrigerant System: Environmentally friendly refrigerant for reduced impact.

    Product Specifications

    • Capacity: 3X9000 BTU
    • NEA TICK: 5 Ticks
    • Other Features: Frost Wash
    • Other Features: Nano Titanium Pre-Filter
    • Refrigerant System: R32

    Ideal For

    Homeowners looking for efficient climate control solutions.

    S$3,409.00 U.P. S$4,090.80 $100 OFF EVERY $1000 SPENT
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  20. GREE SYSTEM 3 AIRCON GWCD-MS28/O-3XGWC-09CHARMO
    GREE SYSTEM 3 AIRCON GWCD-MS28/O-3XGWC-09CHARMO

    GWCD-MS28/O-3XGWC-09CHARMO

    3X9000 BTU
    S$3,429.00 U.P. S$4,114.80
    Add to Wish List

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Benefits and Features of System 3 Aircon

Modern System 3 air conditioners are equipped with features designed to maximise comfort, efficiency, and flexibility, including:

  • Inverter technology: Adjusts cooling output based on the room’s temperature, providing consistent cooling while reducing energy consumption.
  • High BTU rating: With a high BTU capacity, these System 3 aircon units are perfect for cooling larger rooms or open spaces efficiently.
  • Programmable timers: Set cooling schedules on your System 3 aircon units to match your daily routine, optimising energy usage while ensuring a comfortable environment.
  • Energy efficiency: Our inverter technology adjusts the compressor speed, resulting in reduced energy consumption and lower electricity bills.

Why Choose Gain City for Your System 3 Aircon?

With over 40 years of experience, Gain City is Singapore’s leading provider of System 3 air conditioning solutions. 

  • Extensive Selection of Top Brands: Gain City offers a wide range of System 3 aircons from trusted brands like Mitsubishi Electric and Daikin, ensuring you find the perfect fit for your home or office, no matter your cooling requirements or budget.
  • Competitive Prices: Benefit from some of the best prices on System 3 aircons in Singapore, ensuring you get maximum value without compromising on performance or energy efficiency.
  • Expert Guidance: Our knowledgeable team is ready to help you select the ideal System 3 air conditioner, taking into account room size, energy efficiency, and cooling preferences.

 

Installation Guide & Maintenance Tips for Your System 3 Aircon

Professional Installation Services

Gain City provides expert installation services for your System 3 aircon, ensuring that it’s set up correctly for optimal performance and energy efficiency. Our certified technicians use high-quality materials, such as durable copper piping and insulation, to ensure long-term reliability and safety. 

Warranty and Aftercare

Gain City offers comprehensive warranty plans for System 3 aircons, covering mechanical and electrical defects for up to 8 years. These warranties also include protection against accidental damage and power surges. 

Maintenance Tips

To keep your System 3 aircon performing efficiently, schedule regular servicing at least every three months. Cleaning the filters, checking for leaks, and ensuring proper airflow are essential tasks to maintain optimal performance. 

Frequently Asked Questions of System 3 Aircon

What system air conditioner should I choose for my house?

The right aircon system depends on the number of rooms you need to cool and their sizes. A System 3 aircon is ideal for homes with three rooms, providing efficient cooling for medium to large spaces. On the other hand, System 2 aircons are better for homes with two rooms. 

What is the average price of a System 3 aircon in Singapore?

The average price of a System 3 air conditioner at Gain City starts from $3.5k and can vary depending on the brand, features, and installation options.

How much space can a System 3 aircon cool?

A System 3 aircon can efficiently cool three rooms at the same time. The exact space it can cool depends on the BTU rating of the units and the size of each room, making it ideal for medium to large homes or offices.

How often should I service my System 3 aircon?

It is recommended to service your aircon every three months to maintain its performance, energy efficiency, and longevity. Regular maintenance also helps prevent breakdowns and ensures smooth operation.