Pioneer® Multi Zone 12,000 BTU 230V 21.5 SEER Wall Mount Indoor Section Air Cond Heat Pump

Model Number: WS012GMFI22HLD-10

Limited Time Offer!

  1. Free Shipping within the Continental US
  2. Various Installation Kit Options Available (See Below)
  3. Includes Free Flare Connection Leak Guard Sealer
  4. Wholesale Price Directly from Factory


  • $308.00
  • Save $92


Inverter++ Variable Speed Multi Split Systems we offer are available in a mix and match fashion and fully user selectable and customizable. Multi Zone Wall Mount Type Split Air Conditioning and Heating System (Indoor Section Only). Variable Speed DC Inverter Operation Mode: Cooling and Heating. Capacity: 12,000 BTU/Hr. (1 Ton). Total capacity of the matched indoor units may exceed the available outdoor unit capacity by up to 35% Efficiency Rating: 21.5 S.E.E.R. Electrical Specification: 208-230 VAC, 1 Phase, 60 Hertz. Customizable length copper line set with flare connections come with this indoor unit.


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.

Compatible Outdoor Units

Matching outdoor units need to be selected and purchased separately. To purchase a multi split system, first determine the outdoor unit required among the 4 kinds of outdoor units we offer as follows:


  1. Total capacity of all indoor units attached should be within the Min. and Max Loading range of the outdoor unit selected.
  2. Not all circuits available on an outdoor units need to be utilized entirely. Some may be kept sealed without an attached indoor unit.
  3. Every order placed is first checked by our engineering and if there are any errors we will contact you and work with you to reselect for a correct matchup.
  4. Please call us or use the Matching Chart document in the Manuals & Downloads tab to help you select the right grouping of indoor units. 

What's Included

  • Indoor 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


Pioneer Mini Split Certifications

Performance Data

  • Power Supply: 208~230V, 60Hz, 1Ph
  • Cooling Capacity: 12,000 BTU/h
  • Cooling SEER: 21.5
  • Heating Capacity: 12,000 BTU/h
  • Heating HSPF: 11.0
  • Suitable Area: 350~450 Sq.F
  • Air Flow (Hi/Med/Lo): 306 / 212 / 147 CFM
  • Sound Level (Hi/Lo): 39 / 25 dB(A)
  • Net Dimensions (WDH): 31.5 x 7.5 x 11.6 Inches
  • Carton Dimensions (WDH): 34.5 x 11.2 x 14.7 Inches
  • Net / Gross Weight: 18 / 22 Lbs


Ask a Question
  • I have a YN012GMFI22RPD that had a ceiling cassette. Can I use a wall unit with this out door unit?

    Yes you can.

  • What needs to be purchased to control the temperature by a smart device?

    For this unit you would need to purchase this module to have it controllable by Alexa or Google.

  • what size do you need for a 1500 square foot home in a dual split

    You would need at least 36,000 BTU to manage that space.

  • what does the installation kit includes

    The installation kit is: copper refrigeration lines, communication wire between indoor and outdoor unit, 10 ft drain hose, wall cap, sleeve, and putty.

  • Does each head need a power source? Or does it get the power from the outside unit? Thank you for your time

    The outdoor unit will power all of the indoor units via the included signal cable.

  • what size line-set does the 12,000 btu unit take, 1/4 x 3/8 or 1/4 x 1/2?

    The 12,000 BTU for multi-zone takes 1/4"-1/2".

  • Lowest outside temperature for heating?

    -13°F for multi-zone units.

  • How does the drain function for an interior wall?

    You would need to either tap into a sewage line from a neighboring kitchen or bathroom, or install a condensate pump to route the drainage elsewhere.

  • Can the wall mounted unit be installed over a window or under a window?

    As long as the general spacial guidelines are followed then there is no direct issue with this.

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