In Stock

PIONEER® 12,000 BTU 21.5 SEER 115V Ductless Mini-Split Inverter++


Pioneer® 12,000 BTU 21.5 SEER 115V Ductless Mini Split Inverter++ Air Conditioner Heat Pump System Full Set

  • Free Shipping for most orders
  • Wholesale Prices Directly From Brand Owner
  • Secure Payment Options
SKU: WYS012AMFI22RL Category: Tags: , , , , ,





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.


  • Ultra High Efficiency Inverter++ ductless mini split heat pump system
  • Cooling capacity: 12,000 BTU/H with 21.5 SEER/12.5 EER efficiency
  • Heating capacity: 12,000 BTU/H with 11.5 HSPF/3.38 COP efficiency
  • Voltage: 110~120 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
  • Energy-Star Certified
  • AHRI Estimated Annual Operating Costs:
    • Cooling: $74.00
    • Heating: $221.00


  • Power Supply: 110~120V, 60Hz, 1Ph
  • Cooling Rated Capacity: 12,000 BTU/h
  • Cooling Capacity Range: 3,500~12,150 BTU/h
  • Cooling SEER: 21.5 BTU/w
  • Heating Rated Capacity: 12,000 BTU/h
  • Heating Capacity Range: 4,600~12,904 BTU/h
  • Heating HSPF: 11.5 BTU/w
  • Refrigerant Type: R410a
  • Suitable Area: 300~450 Sq. F


  • Model Number: WS012AMFI22HLE
  • Air Flow (Hi/Med/Lo): 306 / 212 / 147 CFM
  • Sound Level (Hi/Lo): 36.0 / 23.0 dB(A)
  • Net Dimensions (WDH): 31.5 x 7.3 x 11.6 Inches
  • Carton Dimensions (WDH): 34.5 x 11.25 x 15 Inches
  • Net / Gross Weight: 24 / 34.2 Lbs


  • Model Number: YN012AMFI22RPE
  • Sound Level: 52.5 dB(A)
  • Breaker Needed: 20A (single-pole)
  • Net Dimensions (WDH): 30.2 x 11.8 x 21.7 Inches
  • Carton Dimensions (WDH): 34.8 x 13.25 x 24 Inches
  • Net / Gross Weight: 66.8 / 72.3 Lbs


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


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


Mini Split Certifications

Additional information

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.

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.



The Pioneer brand promise is to provide you with high-quality HVAC equipment at affordable prices and with instant availability. With a well-trained staff in the customer service and technical support departments, as well as providing an exceptional shopping experience, Pioneer is one of the largest providers of ductless mini-split and multi-split systems.

1 review for PIONEER® 12,000 BTU 21.5 SEER 115V Ductless Mini-Split Inverter++

  1. MinisplitMart

    Please be the first to leave a review for this product. Thanks !

Only logged in customers who have purchased this product may leave a review.