Pioneer® 24,000 BTU 20.5 SEER 230V Ductless Mini-Split Air Conditioner Heat Pump System Full Set

Model Number: WYS024GMFI22RL-10

Limited Time Offer!

  1. Free Shipping within the Continental US
  2. Pre-Charged with R410A for line lengths up to 25 ft long
  3. Various Installation Kit Options Available (See Below)
  4. Includes Free Flare Connection Leak Guard Sealer
  5. Wholesale Price Directly from Factory
  • $1,638.00
  • Save $262


  • Ultra High Efficiency Inverter++ ductless mini split heat pump system
  • Cooling capacity: 24,000 BTU/H with 20.5 SEER efficiency
  • Heating capacity: 25,000 BTU/H with 10 HSPF efficiency
  • Voltage: 208~230 V, 60 Hertz, 1Ph
  • High Wall Mounted Air Conditioning & Heating System
  • Variable Speed DC Inverter Operation Mode
  • Customizable length copper line set with flare connections
  • AHRI Estimated Annual Operating Costs:
    • Cooling: $148.00
    • Heating: $505.00


R410A Pre-Charged Outdoor Unit, accommodating refrigerant line lengths up to 25 ft. per circuit.


The installation kit is necessary for the system to function. Do not select the "Without Installation Kit" option from the dropdown unless you are providing one yourself. The installation kit is: copper refrigeration lines, communication wire between indoor and outdoor unit, 10 ft drain hose, wall cap, sleeve, and putty.

High Wall Mounted Ductless Mini Split

Mini Split Wall Mount Inverter+ and Inverter++ Series

At Pioneer Mini Split, we offer variable capacity ductless wall-mount mini split systems, available with different efficiency ratings and in a variety of capacities for simple installation and great single-zone comfort. A convenient remote controller conveys cooling, heating, dehumidification, and ventilation requests to the wall-mount ductless mini split system, while automatic air-sweeping louvers, automatically varying air flow, and capacity adjustments keep the zone at the ultimate comfort level. This results in minimal electrical consumption. Check out our selection of AC mini split wall mounts today!

More details about Pioneer® WYS Series

What's Included

  • Indoor Unit
  • Outdoor Unit
  • Wireless Remote Control
  • Various Installation Kit Options Available
  • Flare Connection Leak Guard Sealer
  • Installation Manual
  • User’s Manual
  • Manufacturer Warranty

Our Guarantee

  • 5 year parts limited warranty
  • 5 year compressor limited warranty


  • Sleep Mode
    The function enables the air conditioner to automatically increase cooling or decrease heating 1°C per hour for the first two hours, then holds steady for the next 5 hours, after that it will switch off. This function maintains both energy savings and comfort at night.
  • Temperature Compensation
    Temperature compensation function eliminates the difference in temperature between the floor and ceiling by mixing the different layers of air. Consequently, the time for cooling the room is reduced, and a cold offset rising stream of warm air by stirring.
  • Refrigerant Leakage Detect 
    Indoor unit shows error code "EC" and stops automatically when refrigerant leakage is detected. This protects the compressor from high temperature damage due to refrigerant leakage.
  • Anti-cold Air Function 
    Indoor fan speed is regulated automatically from the lowest grade to the setting grade according to evaporator temperature when the unit just starts heating operation. This function can prevent cold air blowing out to avoid discomfort to the users.
  • Emergency start
  • Low Ambient Cooling 
    With built-in low ambient kit or special designed PCB, outdoor fan speeds can be changed automatically according to condensation temperature. The air conditioner can run cooling operation even when the outdoor ambient temperature is down to -15°C.
  • 1W Standby 
    Intelligent on-off technology enables Pioneer products automatically  enter energy-saving mode when standby, cut energy consumption from normal 5W to 1W or 0.5W per hour which counts 80%~90% of saving.
  • 2-way Draining 
    Both left and right sides of the indoor unit are possible for outstretch of connective piping and drainage hose for easy installation.
  • Follow Me (Remote Thermostat) 
    Temperature sensor built in the remote controller will sense it’s surrounding temperature. The unit will adjust the room temperature more accurately to give you comfort.
  • 46°F Heating
    In heating operation, the preset temperature of the air conditioner can be as low as 46°F, which keeps the room temperature steady at 46°F and prevents the house from freezing when it is unoccupied for a long time in severe cold weather.
  • Chassis Heating Belt
    Heating belt is fitted on the base plate of the outdoor unit to prevent defrosting water accumulation, which improves heat transfer efficiency.


  • High Density Filter
    Compared with ordinary dust filter, the anti-dust effect of this high density filter can increase more than 50%, it can clean dust, pollen up to 80%.
  • Wireless Control
    With the Wireless control, you can easily turn off each indoor unit that it is paired, outside your home via your smart phone. Furthermore, you can turn it on before you come back.
  • Remote in Engineer Mode


Pioneer Mini Split Certifications

Performance Data

  • Power Supply: 208~230V, 60Hz, 1Ph
  • Cooling Rated Capacity: 24,000 BTU/h
  • Cooling Capacity Range: 7,401~31,350 BTU/h
  • Cooling SEER: 20.5 BTU/w
  • Heating Rated Capacity: 25,000 BTU/h
  • Heating Capacity Range: 7,621~31,483 BTU/h
  • Heating HSPF: 10.0 BTU/w
  • Refrigerant Type: R410a
  • Suitable Area: 650~900 Sq.F

Indoor Unit Data

  • Air Flow (Hi/Med/Lo): 617 / 471 / 324 CFM
  • Sound Level (Hi/Lo): 50.0 / 35.5 dB(A)
  • Net Dimensions (WDH): 42.5 x 8.8 x 13.2 Inches
  • Carton Dimensions (WDH): 45.5 x 12.3 x 16.3 Inches
  • Net / Gross Weight: 29 / 37 Lbs

Outdoor Unit Data

  • Sound Level: 61.0 dB(A)
  • Net Dimensions (WDH): 37.2 x 16.5 x 31.8 Inches
  • Carton Dimensions (WDH): 42.8 x 19.6 x 34.0 Inches
  • Net / Gross Weight: 137 / 147 Lbs


Ask a Question
  • Should this have a fusible disconnect, or is the breaker in the main panel sufficient?

    Any disconnect whether fused or unfused will do, it will just act as a pullout switch for servicing. But ultimately the breaker in the circuit panel will be enough.

  • what is the lowest temp heat pump will work

    This system will continue heating down to -13°F outside temperatures.

  • I purchased the WYS024GMFI22RL-16 unit and the technical brochure says it should have a minimum ampacity circuit of 15. But, the question below says it should be 20A with 12 AWG wire? Which is correct?

    Either is permissible. 15A is the absolute minimum, we recommend a 20A double pole breaker with 12 AWG wire as that is typically more commonly found.

  • Ordered the system with a 16ft line set ,will a 10ft line set work without a problem?

    That would not be a problem at all, the included pre-charge can support line lengths between 10 and 25 ft.

  • Will this unit work on 240 volts?

    Yes, it can work on anywhere between 207~253V.

  • On this unit 24000 21.5 seer how many sq ft will it take care of

    This is intended for spaces between 650 and 950 square feet.

  • How loud does the unit sounds? I am looking for a quite unit to install in a spa environment. It can not run louder then the relaxing music. Please explain!

    These systems are ultra silent and barely audible. The 24K unit on low is about 35 dB, which is actually quieter than a library. You won't even believe it's on unless you put your hand over the vent to feel the air.

  • What size are the coolant lines, not length?

    This system takes 3/8"-5/8" diameter lines.

  • What’s the amperage and recommended breaker size? Does this unit require a neutral wire?

    This system would take a 20A double-pole breaker with 12 AWG wire. The wire would be two hots and a ground, no neutral.

  • What temperature does efficiency start to drop off at? For I instance at 20 degrees is it still at 100% Efficiency, whsf?

    You can see the heating performance curve here.

  • Can this be connected to a thermostat?

    There are currently no wired thermostat options available, the closest solution would be this wireless smart controller which can act as a thermostat for all intents and purposes.

  • What are the wifi options?

    You can either consider our internal WiFi module or a dedicated discrete smart controller device. Both would provide scheduling functionality and ability to control remotely from your smartphone.

  • What is the max height the outdoor heat pump can be mounted? Can I mount it 3ft above the ground

    The outdoor unit and indoor unit should not have a height differential greater than 16 ft.
    Otherwise, mounting the outside condensing unit 3 ft off of the ground is not a problem.

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