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GreyVolt Series Energy Star Certified 24000 BTU 21 SEER2 208-230V Mini Split Air Conditioner and Heater Gray Wifi Enabled

4.14
50 Reviews
Item No: 89147256
C$1,419C$2,43041% Off
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Key Features

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● High-efficiency Cooling and Heating: With an effective cooling capacity and 2 ton heat pump, this mini split air conditioner is powerful enough to cool or heat rooms up to 1500 sq.ft. Plus, featuring 21 SEER2, 10 HSPF, ECO mode and inverter technology, the AC unit ensures higher energy efficiency and lower energy consumption.
● 4-in-1 Comfort and Quiet Operation: This split AC unit features 4 working modes: cool, heat, dry and fan, making it suitable for year-round use. The low-noise operation (≤23 dB) ensures a peaceful sleep while the smart 0-24h timer allows for customized scheduling of the unit's operation.
● Multiple Control Methods: This mini split air conditioner features WiFi capability, allowing for seamless integration with smartphones and voice control through Alexa or Google Assistant. Users can control the temperature, mode, and timer settings via the included remote control, App or voice commands.
● Self-Cleaning and User-friendly Design: The split AC boasts 57℃ high-temperature self-cleaning function, allowing you to free your hands and enjoy fresh air. The removable and washable filter makes cleaning a breeze. Moreover, with auto defrost function and ETL certification, the air conditioner ensures prolonged service time and high security.
● Comprehensive Installation Kit: Due to the large size, this powerful and energy-saving split AC unit will come in 2 boxes. The all-inclusive set includes 1x indoor unit, 1 x outdoor unit, 2 x copper connection pipes, 1 x power line, 1 x communication wire, 1 x drain hose, 1 x remote control, 1 x tape, 1 x wall sleeve and 1 x putty.

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Specifications

Color of Indoor UnitGrey
Color of Outdoor UnitWhite
MaterialMetal, Aluminum, Plastic
Indoor Unit Size43" x 9"x 13"(L x W x H)
Outdoor Unit Size35.5" x 14" x 27.5"(L x W x H)
Cooling/Heating Capacity24000 BTU
Cooling Power2000W
Heating Power2000W
SEER221
HSPF210
Coverage Area1500 sq. ft
Air Flow Rate765 CFM
Voltage208-230V~60Hz/1PH
Dehumidifying Capacity92 Pints/Day
Temperature Setting Range16℃~32℃
Operating Ambient Temperature-7℃-48℃
RefrigerationR32
Indoor Noise Level23 dB
Outdoor Noise Level55.5 dB
Total Net Weight133.5 lbs
Box Qty2(May vary by batch)
  • Overview

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Overview

● 8 years Warranty for compressor and 5 years for parts to ease your worries.

● Energy Star Certified and AHRI Certified

● 4-in-1 design includes cooling, heating, drying and fan

● Innovative inverter technology improves energy efficiency

● WiFi connection and App control bring more convenience

● Handy remote control with digital display for easy operation

● Works with Alexa or Google Assistant for hands-free control

● 0-24hour timer and quiet sleep mode for a peaceful sleep

● Multiple functions include swing, turbo, ECO, iFEEL and more

● Washable filter and self-cleaning for easy maintenance

● 360° air flow supply effectively avoids direct blowing

● Low/medium/high speed for customized comfort

● Auto defrost function prevents damage to the unit

● ETL and AHRI certification ensure reliable use

● Automatically adjust the speed of the compressor according to changes in indoor temperature to save energy

How to Install a Costway Ductless Mini Split Air Conditioner

Reviews

4.14
50 Reviews
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Frequent Mentions

  • C

    This thing is awesome!!

    05/23/2026

    Installed in my 40 foot camper. Installation was a breeze and this thing puts out some serious air! It’s extremely quiet, you can’t even hear it run. Very impressed especially for the price. Highly recommend!!

    Customer Photos
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    Customer Photos
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  • P

    Works great. Easy to install.

    04/29/2026

    I had to wait for indoor unit about 1 week after outside unit then waited on mounting bracket -ordered afterwards. After high winds abated I installed outdoor unit and connected inside unit. Works great.

    Customer Photos
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    Customer Photos
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  • A

    Great

    11/25/2025

    Delivered in a timely manner. Easy to install. Works as it should. 10 out of 10 would recommend

    Customer Photos
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    Customer Photos
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  • L

    Mini Split

    10/08/2025

    I bought this for my living room area because I have a dinosaur 4 ton heat pump that runs constantly. So far working great. WiFi program not so great.

    Customer Photos
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  • A

    Air conditioner

    03/08/2026

    I loved my other Costway mini split so much that I bought a second one. The first one I use in my living room and the second one is in my dining room. They work amazing and the cost is better than any other brand I have looked at. Ian planning on buying more for my bedrooms.

Q&A

  • Q:
    What type of refigerent does it take?
    A:
    R32 refrigerant.
    Costway representative
  • Q:
    What diameter size are the copper lineset on the 24000 btu greyvolt unit? If I need to buy longer copper lines what type of refrigerant is it charged with so I can add more? R-454B?
    A:
    The copper line diameter for the 24000 BTU unit is 1/4 inch for the liquid line and 5/8 inch for the gas line. If you need to extend the copper lines, please note that additional refrigerant is required—approximately 30g for every 1 meter of extension. It is important to have a professional installer handle the extension and refrigerant refill to ensure proper performance and safety. However, the specific type of refrigerant for this unit is not mentioned in the available information, so I recommend checking the unit's manual or contacting a professional for confirmation on the refrigerant type.
    Costway representative
  • Q:
    Can it handle below zero temperatures
    A:
    This unit is not suitable for areas where winter temperatures drop to 0°F. In heating mode, the outdoor unit operates within an ambient temperature range of 19.4°F to 75.2°F.
    Costway representative
  • Q:
    What length line set comes with this 24,000 btu unit
    A:
    The line set for the 24,000 BTU unit is 13 feet long.
    Costway representative
  • Q:
    I'm looking at the 24000 BTU mini split. Is it possible to get a precharged 25ft line set with it? If not, does the unit come precharged with enough refridgerant for the 25ft line set?
    A:
    The 24000 BTU mini split does not come with a precharged 25ft line set. However, the unit is precharged with refrigerant, which is sufficient for standard installations. If you extend the line set to 25ft, you will need to add additional refrigerant to ensure optimal performance.
    Costway representative
  • Q:
    Can I put this in my self
    A:
    The installation of the mini split AC unit is not recommended for self-installation. It is advised to have a professional technician perform the installation to ensure it is done correctly and safely.
    Costway representative
  • Q:
    How much refrigerant is required at installation?
    A:
    The unit comes pre-charged with refrigerant, so there is no need to add additional refrigerant during installation unless the line set is extended beyond the standard length. In that case, you may need to add refrigerant to compensate for the longer line set.
    Costway representative
  • Q:
    I just ordered the 24,000! I plan to install it on my own but will it require being charged afterwards?
    A:
    The unit comes precharged with refrigerant, so you will not need to charge it after installation. However, it is recommended to have a professional certified technician install the unit due to the complexity of the installation process. Improper installation may result in the product not functioning properly.
  • Q:
    How can I get additional drain hoses?
  • Q:
    What is the minimum outside temperature that this unit will operate for heating?
    A:
    19.4℉.
    Costway representative
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Manuals

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