Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V

Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V
Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V

Pioneer® 9,000 BTU 21.5 SEER2 Ductless Mini-Split Inverter+ Energy-Star Air Conditioner Heat Pump System Full Set 115V


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Regular price $929.00 Sale price $693.00 Save $236

Installation Kit Options:



  • High Efficiency Quantum Series Inverter+ ductless mini split heat pump system
  • Cooling capacity: 9,000 BTU/H with 21.5 SEER2 / 12.5 EER2 efficiency
  • Heating capacity: 10,000 BTU/H with 9.0 HSPF2 / 2.93 COP2 efficiency
  • Voltage: 110~120V, 60Hz, 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: $58.00
    • Heating: $211.00

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.

Wall-Mounted Mini Split

Quantum Series Inverter+ (20 SEER) and Inverter++ (22 SEER)

At Pioneer Mini Split, we offer variable capacity ductless wall-mounted mini split systems, available with different efficiency ratings and in a variety of capacities for simple installation and great single-zone comfort. Our ductless mini split wall-mounted air conditioners and heat pumps come with 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 for a more efficient ductless wall air conditioner and heating system. Check out our selection of wall-mounted heating and cooling units today!

More details about Pioneer® WYS Series

What's included with the Pioneer 9,000 BTU 20.5 SEER 115V ductless mini-split inverter and air conditioner heat pump system full set:

  • 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



  • Front Desk Control
    With a smart control board, Pioneer air conditioners can be turned on/off via long distance control signals.
  • 46° F Heating

  • 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 Using

  • 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.
  • Follow Me 
    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.


  • Wired Controller
    Compared with infrared remote controller, wired controller can be fixed on the wall and makes air conditioner control more convenient.
  • Remote in Engineer Mode

  • Central Control Management
    The centralized controller is a multi-functional device that can control up to 64 indoor units within a maximum connection length of 3.90 Ft.

Technical Information


Pioneer Mini Split Certifications

Performance Data

  • Power Supply: 110~120V, 60Hz, 1Ph
  • Cooling Rated Capacity: 9,000 BTU/h
  • Cooling Capacity Range: 2,650~10,300 BTU/h
  • Cooling SEER2: 21.5 BTU/W.h
  • Cooling EER2: 12.5 BTU/W.h
  • Heating Rated Capacity: 10,000 BTU/h
  • Heating Capacity Range: 2,700~10,300 BTU/h
  • Heating HSPF2 (Region IV/V): 9.0 / 6.9 BTU/W.h
  • Heating C.O.P.2 (47°F/5°F): 2.93 / 1.89 W/W
  • Refrigerant Type: R410A
  • Suitable Area: 100~350 Sq.F

Indoor Unit Data

  • Part Number: WS009AMFI20HLD
  • Air Flow (Hi/Med/Lo): 247 / 182 / 129 CFM
  • Sound Level (Hi/Med/Lo): 38 / 32 / 25 dB(A)
  • Net Dimensions (WDH): 28.43 x 7.36 x 11.42 Inches
  • Carton Dimensions (WDH): 31.1 x 10.63 x 14.76 Inches
  • Net / Gross Weight: 17.0 / 22.3 lbs

Outdoor Unit Data

  • Part Number: YN009AMFI20RPD
  • Sound Level: 54.0 dB(A)
  • Breaker Needed: 20A Single-Pole
  • Net Dimensions (WDH): 30.2 x 11.8 x 21.8 Inches
  • Carton Dimensions (WDH): 34.8 x 13.2 x 24 Inches
  • Net / Gross Weight: 57.8 / 63.5 lbs

Manuals & Downloads

Free Shipping For All Orders Over $49


For a Limited Time we offer free shipping on All Orders Above $49 by Standard Ground or delivered by Freight (LTL) to the 48 contiguous states. Free shipping offer does not apply to Alaska, Hawaii, or any international destination. Free shipping eligibility is noted on the product page, above the price.

Click here for information on Returns and Refunds

Shipping Details

We only ship to the 48 contiguous United States. No shipments to APO/FPO addresses, AK, HI, PR or other US Territories. No international shipments. Due to the size and the weight of our equipment, we can only utilize well known freight companies for shipping. Each shipment will be palletized, strapped down and wrapped in stretch film to protect against damages during transit.

Upon arrival you may ask the driver to break down the palette into individual cartons to unload the goods from the truck easily. We generally include Lift Gate service. This will arrive as curb side delivery. Trucker will unload the goods from the truck to ground level. If you must have inside delivery service, there will be an additional charge which needs to be paid separately and coordinated with the freight company. We also allow free pickup from our main distribution warehouse, located in Miami area. Equipment we sell is not suitable for express or courier shipping because of their weight as well as high risk of damages.

Due to higher than expected order volume and busy sales season, larger orders may take an extra 3-5 days to be prepared for shipment. We are working around-the-clock to ship out all orders in a timely manner, and will communicate with you if there are any unexpected delays or questions.

We prepare each shipment within 72 hours after the receipt of payment (only during weekdays). Trucking companies usually pick up same day or a day after we call them that the shipment is ready. The transit may take any time between 5 to 8 business days and in rare cases up to 12 days.

We will provide tracking information after shipment. Please contact us in case of any shipment delays. CHECK YOUR INFORMATION CAREFULLY TO SUBMIT THE CORRECT DELIVERY ADDRESS, UPDATED EMAIL AND A VALID PHONE NUMBER with your order. Someone must be present to receive the cargo at the time of delivery. Delivery company will call your phone number to setup a delivery appointment for residential deliveries. If your phone number is not valid, the cargo can not be delivered and will be returned at your expense within 3 days of arrival. If the delivery is refused or can not be delivered, it will be handled as returned merchandise.

Upon arrival, count all cartons and compare with the number stated on the delivery receipt before signing. Open the cartons and inspect the goods carefully for any damages. All products have been inspected under strict ISO regulated facilities and leave our warehouse in perfect condition. Report any shipping damages to the freight carrier on the delivery receipt and file a claim. Also contact us with the description of damages and pictures, etc. Although rare, certain freight damages can occur and we are here to help.

We carry all necessary replacement and service parts and components in large quantities and make them available during and after the warranty period.

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Ask a Question
  • Does the indoor unit have to be level or can you install on a sloped ceiling (minor) ?

    This must be installed level against a vertical wall.

  • How many square feet will this heat and cool

    This is intended for spaces measuring between 100 and 350 square feet.

  • Does this unit use a condensation pump or just a drain

    By default it drains condensate via gravity drain from the rear drainage tube, but you can incorporate a condensate pump if desired as well.

  • Are these units, inverter type? Do they throttle back and idle when the temperature is reached?

    Correct, this is a high technology variable speed digital inverter system. It does not work like the older analog on-off systems. Indoor fan runs continually for properly sampling of the air temperature and will adjust the compressor speed and output based on room's heat loads. Fan only uses 15 watts of power and made to run under continuous duty. It will slow down under minimal loads along with the compressor and this saves you the maximal energy.

  • Can the outside unit be mounted horizontally, or must it remain in a vertical position?

    It must be on a level vertical wall only.

  • Is it required for this unit to be hardwired via the interior unit, or the outside unit, or both?

    Outdoor unit gets hardwired to dedicated breaker. Inside unit would be powered by the outside unit via the included signal cable.

  • Can you add a room?

    This is a 1 to 1 single zone system. For multiple zones on one condenser, you would need to consider our multi-zone options.

  • Is the line set all copper or just on the ends?

    All copper throughout.

  • Once everything is connected do you have to e-vac the system before you turn it on?

    The way it works is that the outdoor condensing unit is pre-charged with R410a to support line lengths up to 25 ft long. You will need to remove the air from the lines before releasing the refrigerant from the outdoor unit, using a vacuum pump or the flushing kit that we sell.

  • how do you use the remote

    You can see the remote instructions in this manual:

  • Will KWIK-E-VAC Line Set Flushing Kit be helpful if 33ft kit is purchased? How much more gas will be needed?

    It will help to flush out the air and install the system but you would still need to top off with 1-2 ounces of refrigerant.

  • Vertical clearance - I only have 3+ inches to ceiling for the 12k unit...would that be acceptable? The right side line set exit is recommended if necessary...because of bending risks?

    3 inches would be the absolute minimum we recommend. And yes, the right side exit involves a 180° bend in the line which increases kinking risk significantly.

  • Can I use a 30 AMP outdoor shut off or does it have to be 20 amps? I can still use a 20 amp breaker inside the panel.

    A 30A disconnect on a 20A breaker would be perfectly fine.

  • what is the amperage, why can't you post it so I can find it without searching everywhere

    This is available in the technical specification document here.

  • Does it need its own dedicated circuit or can I just plug unit in a household plug already there?

    It requires being hardwired to a dedicated breaker.

  • what size curit breaker is needed

    This particular system takes a 20A breaker.

  • What is sq footage this unit cools

    We recommend this unit to be used for rooms between 0 and 350 square feet.

  • Please describe the outlet necessary to plug into. Also, does the outdoor unit need a certain amount of space around its perimeter?

    These must be hardwired to their own dedicated breaker, they do not plug into an ordinary household outlet. For outdoor unit clearance requirements, you can refer to page 20 of the installation manual.

  • Is the mini split WiFi capable?

    Yes it is. You can consider our internal WiFi module. It would provide scheduling functionality and ability to control remotely from your smartphone.

  • If I purchase an install kit longer than 25ft does the outdoor unit come with more R410A or does that have to be added on site?

    We cannot adjust the pre-charge so it would need to be added onsite.

  • What is the size of the inside wall mount ot the 9000

    Indoor Unit Net Dimensions (WDH): 28.43 x 7.36 x 11.42 Inches

  • What is the minimum outdoor temp that heating will still be available.

    This particular system will heat and cool down to +5°F outside temperatures.
    You can also consider our Inverter++ line, which HEATS down to -13°F.

  • How many amps does this unit draw, cooling vs heating?

    When running at rated capacity it draws 6.8A in cooling and 8.1A in heating.

  • How much does the installation kit cost for the 9000 BTU 19.5 Seer unit ? and what else do I need after this purchase to have an electrician install ?

    The cost of the installation kit depends on the desired length, we have options for 10, 16, 25, 33 and 50 ft which you can choose from the dropdown menu above the "Add to Cart" button. That would include everything needed, though you may also want to consider the port adapter to ensure that the installer can access the system.

  • How many pounds of R410 is in a 9000 but mini split system?

    This unit comes preloaded with 30 ounces of R410a refrigerant.

  • Does this plug into a household outlet?

    This requires being hardwired to a dedicated 20A breaker, it does not plug into a regular household outlet.

  • how cold out side will heat still work

    This system will HEAT down to +5°F ambient temperatures.

    You can also consider our Inverter++ line, which will HEAT down to -13°F outside temperatures!

  • How do I select the correct installation kit? What distance should I be measuring to know?

    This would be the distance between where you decide to place the indoor unit and the outdoor unit. The installlation kit length is the length of the pipe that connects these two units together.

  • Can the indoor unit be mounted on the wall with the refrigerant lines coming out of the side instead of the rear?

    Yes it can go out from either side, there are side knockouts for this.