Pioneer® 12,000 BTU 21.5 SEER 230V Ductless Mini-Split Air Conditioner Heat Pump System Full Set

Model Number: WYS012GMFI22RL-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
  • $1,023.00
  • Save $177


  • Ultra High Efficiency Inverter++ ductless mini split heat pump system
  • Cooling capacity: 12,000 BTU/H with 21.5 SEER efficiency
  • Heating capacity: 12,000 BTU/H with 9.8 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: $70.00
    • Heating: $247.00


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: 12,000 BTU/h
  • Cooling Capacity Range: 4,520~17,305 BTU/h
  • Cooling SEER: 21.5 BTU/w
  • Heating Rated Capacity: 12,000 BTU/h
  • Heating Capacity Range: 4,520~17,305 BTU/h
  • Heating HSPF: 9.8 BTU/w
  • Refrigerant Type: R410a
  • Suitable Area: 350~450 Sq.F

Indoor Unit Data

  • Air Flow (Hi/Med/Lo): 306 / 212 / 147 CFM
  • Sound Level (Hi/Lo): 39.0 / 25.0 dB(A)
  • Net Dimensions (WDH): 31.5 x 7.3 x 11.6 Inches
  • Carton Dimensions (WDH): 34.5 x 11.2 x 14.7 Inches
  • Net / Gross Weight: 18 / 22 Lbs

Outdoor Unit Data

  • Sound Level: 57.5 dB(A)
  • Net Dimensions (WDH): 31.5 x 13.2 x 21.7 Inches
  • Carton Dimensions (WDH): 36.2 x 15.4 x 24.3 Inches
  • Net / Gross Weight: 81 / 88 Lbs


Ask a Question
  • Does the 21.5 SEER 12,000 BTU 230V unit heat down to -13?

    Yes it does.

  • what is the size of the inside unit?

    • Net Dimensions (WDH): 31.5 x 7.3 x 11.6 Inches

  • Does the wall unit need to be on a outside wall

    That would be ideal, but if an outside wall is not available, you can put it on an inside wall and tap into a nearby sewage line from kitchen or bathrooms, or incorporate a condensate pump to route draige upwards and elsewhere.

  • With the 230V 19 seer 12,000 btu, what gauge wire do you run from Ac unit to the double 15 amp shut off?

    It would be 14 AWG, or better. The wire is 2 hots and a ground with no neutral.

  • Do I need a 20 amp breaker or a 15 amp breaker for this unit? Is it a single pole or double pole?

    This particular system would take a 15A double pole breaker.

  • Would it be possible to mount the unit on the ceiling instead of on the wall?

    Not possible due to drainage. You would need to consider our ceiling mount type units.

  • Does the line set come flared or will I need to flare the lines myself?

    The lines are pre-flared and ready to connect.

  • Does require a 220 circuit or 110? ( I am novice with electricity and am trying to determine what power I need run to the building we are installing the mini-split. Thank you.

    This particular unit would require 230V supply. We have a 115V option as well if that is desired.

  • Is it programmable?

    By default no, but you can add this USB dongle to make it programmable.

  • When figuring how long is needed for the cooling lines where should the measurements be taken from

    Generally the installation kit would just be the distance between where you expect to mount the inside and outside units, as that is what connects them together.

  • How large of a space do this unit cover?

    For typical applications, we recommend this for 200 - 500 square feet.

  • at what temperature does the 22 SEER stop heating? you show the 19 SEER stopping at 5 deg F.

    All 22 SEER units heat down to -13°F.

  • Can you add an extra wall mount to the base unit in the future?

    For that you would need to explore our multi-zone options.

  • What type compressor?

    This uses a rotary-type compressor.

  • Does this unit also need a 15A double-pole breaker using 12 or 14 gauge wire like the 19 SEER 12,000 BTU unit?

    This particular unit takes a 20A double pole breaker, but a 15A is also permissible. If using 20A, it requires 12 AWG to be up to code. 15A can be used with 14 AWG.

  • Other than SEER Rating and price, is there any difference between the two 12,000 BTU 230 volt units?

    The 22 SEER Inverter++ unit also has an auxiliary heat strip on outdoor unit which allows unit to function down to -13 degrees Fahrenheit for the colder states. It is also Energy-Star rated which could help with rebates. The 19 SEER Inverter+ stops heating at 5°F and is not Energy-Star rated.

  • If I need backup generator to run this unit efficiently , how many watts are we looking at?

    This particular 230V unit has the following electrical demands: 
    Cooling: 923W average  (325W min ~ 1283W max)
    Heating: 1085W average (495W ~ 1447W max)

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