Pioneer® Diamante Pro™ 12,000 BTU 20 SEER2 230V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit

Upgrade your home comfort with the Pioneer Diamante Pro™ 12,000 BTU Mini Split Air Conditioner, engineered for powerful cooling, efficient heating, and ultra-quiet operation. Designed with advanced inverter technology and a high 20 SEER2 rating, this ductless system delivers maximum energy savings while maintaining precise temperature control year-round.

Whether you're looking to buy a mini split AC online, upgrade your current HVAC system, or install a cost-effective heating and cooling solution, this all-in-one system is built for performance, reliability, and easy installation.

Summary at a Glance

• High Efficiency Diamante Pro™ Ductless Mini Split Heat Pump System
• Cooling capacity: 12,000 BTU/H with 20 SEER2 / 11.2 EER2 efficiency
• Heating capacity: 12,000 BTU/H with 9.5 HSPF2 / 3.41 COP2 efficiency
• Voltage: 208/230V, 60Hz, 1Ph
• High Wall-Mounted Ductless Air Conditioning & Heating System
• Variable-Speed DC Inverter Driven Performance
• Factory-Precharged with Environmentally Friendly R454b Refrigerant
• Low Ambient Range Operation (As low as -4°F in Heating / As high as 122°F in Cooling)

Powerful Cooling & Heating Performance

• 12,000 BTU capacity – ideal for bedrooms, offices, apartments, and small living spaces
• Cooling + Heating (Heat Pump) – all-season comfort in one system
• 230V high-efficiency operation – stable and reliable performance

Enjoy fast cooling during hot days and energy-efficient heating during colder months with one versatile unit.

High-Efficiency Inverter Technology (20 SEER2)

• 20 SEER2 rating for superior energy savings
• DC inverter compressor adjusts power usage for optimal efficiency
• Lower electricity bills compared to traditional air conditioners

If you're searching for a high-efficiency mini split system, this model is designed to reduce energy consumption without sacrificing comfort.

Ultra-Quiet Operation

• Whisper-quiet indoor unit—perfect for bedrooms and workspaces
• Noise-reduction design ensures uninterrupted sleep and productivity

Complete Installation Kit Included

• Comes with a 16 ft. installation kit
• Includes essential components for quick and hassle-free setup
• Ideal for DIY installation or professional HVAC setup

Everything you need to get started is in the box—making it one of the best mini split AC units with an installation kit available online.

Advanced Comfort Features

• Multiple fan speeds and airflow modes
• Remote control for convenient operation
• Smart temperature control for consistent comfort
• Dehumidification mode for improved air quality

Perfect For:

• Bedrooms
• Living rooms
• Small apartments
• Offices and home workspaces
• Garages or studio spaces

Why Choose the Pioneer Diamante Pro™ Mini Split?

• Energy-efficient 20 SEER2 performance
• Heating & cooling in one system
• Quiet and reliable operation
• Easy installation with included kit
• Excellent value for money
• 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

• AHRI Certificate
• Energy Guide
• Submittal Sheet

• System Kit

  • Power Supply: 208~230V, 60Hz, 1Ph
  • Cooling Rated Capacity: 12,000 BTU/h (1 Ton)
  • Cooling Capacity Range: 3,400~13,000 BTU/h
  • Cooling SEER2: 20.0 BTU/W.h
  • Cooling EER2: 11.2 BTU/W.h
  • Heating Rated Capacity: 12,000 BTU/h (1 Ton)
  • Heating Capacity Range: 3,400~13,900 BTU/h
  • Heating HSPF2 (Region IV/V): 9.5 / 8.2 BTU/W.h
  • Heating C.O.P.2 (47°F/5°F): 3.41 / 1.8 W/W
  • Refrigerant Type: R454b
  • Recommended Room Size: 350~500 sq ft
  • Minimum Room Size: 34 sq ft
  • Piping Diameter: 3/8" (Gas) / 1/4" (Liquid)
  • AHRI Reference: 217048743

• Indoor Unit

  • Part Number: WT012GLSI20HLF
  • Air Flow (Turbo/Hi/Med/Lo/Mute): 342 / 270 / 235 / 200 / 152 CFM
  • Sound Level (Turbo/Hi/Med/Lo/Mute): 45 / 42 / 35 / 30 / 28 dB(A)
  • Product Dimensions (WDH): 31"-7/8 x 8" x 11"-1/2 Inches
  • Carton Dimensions (WDH): 34"-7/8 x 10"-3/4 x 14"-3/8 Inches
  • Net / Gross Weight: 19.8 / 26.5 lbs

• Outdoor Unit

  • Part Number: YN012GLSI20RPF
  • Breaker Needed: 15A (double-pole)
  • Sound Level: 55 dB(A)
  • Net Dimensions (WDH): 31" x 11"-1/2 x 19"-3/8 Inches
  • Carton Dimensions (WDH): 33" x 13"-3/8 x 22"-3/4 Inches
  • Net / Gross Weight: 55.1 / 66.1 lbs

Buy Now – Upgrade Your Comfort Today

Don’t settle for inefficient cooling systems. Invest in the Pioneer Diamante Pro 12,000 BTU Mini Split and enjoy powerful performance, lower energy costs, and year-round comfort. Experience next-level cooling and heating efficiency!

Dimension Chart