Pioneer Diamante Pro™ 12,000 BTU 20.5 SEER2 115V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit - WYT012ALSI20RL
- High Efficiency Diamante Pro™ Ductless Mini Split Heat Pump System
- Cooling capacity: 12,000 BTU/H with 20.5 SEER2 / 10.5 EER2 efficiency
- Heating capacity: 12,000 BTU/H with 9.5 HSPF2 / 3.41 COP2 efficiency
- Voltage: 110/120V, 60Hz, 1Ph
- High Wall-Mounted Ductless Air Conditioning & Heating System
- Variable-Speed DC Inverter Driven Performance
- Factory-Precharged with Environmentally Friendly R454b Refrigerant
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Low Ambient Range Operation (As low as -4°F in Heating / As high as 122°F in Cooling)
Features
- Heat Pump with Cooling, Heating, Dry, and Ventilation Modes
- Dual-Drainage Ports
- Washable, Reusable Air Filters
- Dual-Axis Airflow (Motorized Up-Down and Left-Right Louvers)
- Functional Remote with:
- ECO and SLEEP Modes, for Energy-Conservation
- Timer On/Off Control
- TURBO, for Times of High-Demand
- Self-Clean Cycle
- MEMORY, to Recall Favorite Settings
- IFEEL, to Detect and Adjust to Local Temperature
Technical Information & Performance
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System Kit
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Power Supply: 110~120V, 60Hz, 1Ph
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Cooling Rated Capacity: 12,000 BTU/h
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Cooling Capacity Range: 3,400 ~ 13,000 BTU/h
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Cooling SEER2: 20.5 BTU/W.h
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Cooling EER2: 10.5 BTU/W.h
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Heating Rated Capacity: 12,000 BTU/h
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Heating Capacity Range: 3,400 ~ 13,900 BTU/h
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Heating HSPF2 (Region IV): 9.5 / 8.2 BTU/W.h
- Heating C.O.P.2 (47°F/5°F): 3.41 / 1.8 W/W
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Refrigerant Type: R454b
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Recommended Room Size: 200~500 sq ft
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Minimum Room Size: 34 sq ft
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Minimum Installation Height: 6 ft
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Piping Diameter: 1/4 x 3/8"
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AHRI Reference: 217048742
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Indoor Unit
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Part Number: WT012ALSI20HLF
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Air Flow (Turbo/Hi/Med/Lo/Mute): 342 / 270 / 235 / 200 / 152 CFM
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Sound Level (Turbo/Hi/Med/Lo/Mute): 45 / 42 / 35 / 30 / 28 dB(A)
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Product Dimensions (WDH): 31"-7/8 x 8" x 11"-1/2 Inches
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Carton Dimensions (WDH): 34"-7/8 x 10"-3/4 x 14"-3/8 Inches
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Net / Gross Weight: 19.8 / 26.5 lbs.
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Outdoor Unit
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Part Number: YN012ALSI20RPF
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Breaker Needed: 20A (single-pole)
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Sound Level: 55 dB(A)
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Net Dimensions (WDH): 31" x 11"-1/2 x 19"-3/8 Inches
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Carton Dimensions (WDH): 33" x 13"-3/8 x 22"-3/4 Inches
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Net / Gross Weight: 55.1 / 66.1 lbs
Dimension Chart
What Our Experts Think
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12,000 BTU (1 ton) capacity ideal for bedrooms, offices, and small to medium rooms.
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High 20.5 SEER2 efficiency rating for superior energy savings.
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Inverter heat pump delivers quiet, reliable heating and cooling year-round.
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115V power supply ensures compatibility with standard home outlets.
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Comes with a 16 ft. installation kit for straightforward setup.
Q&A
Q: What room size is this unit best for?
A: Suitable for spaces up to ~500 sq. ft., such as bedrooms or small living rooms.
Q: Can it both heat and cool?
A: Yes, inverter heat pump technology provides efficient year-round comfort.
Q: Does the kit include installation hardware?
A: Yes, a 16 ft. line set kit is included.
Maintenance Tips
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Wash or replace indoor air filters every 2–4 weeks.
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Keep outdoor condenser clean and clear of debris.
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Inspect refrigerant lines and electrical connections annually.
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Arrange professional maintenance once per year for peak efficiency.
