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Pioneer® Diamante Pro™ 12,000 BTU 20 SEER2 115V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit

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Original price $1,269.00
Original price $1,269.00 - Original price $1,269.00
Original price $1,269.00
Current price $888.00
$888.00 - $888.00
Current price $888.00

In Stock & Ready to Ship

All orders are shipped within 1-2 business days. Product ETA 5-7 business days.

Pioneer® Diamante Pro™ 12,000 BTU 20 SEER2 115V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Installation Kit

Upgrade your home comfort with the Pioneer® Diamante Pro™ 12,000 BTU Mini-Split Air Conditioner & Heat Pump—a powerful, energy-efficient, and ultra-quiet ductless solution designed for year-round climate control. Engineered with advanced inverter technology and an impressive 20 SEER2 rating, this high-performance mini-split system delivers fast cooling, reliable heating, and lower energy bills—making it the perfect choice for homeowners seeking premium comfort without the high operating costs.

Whether you're cooling a bedroom, home office, garage, or small living space, this 12,000 BTU ductless AC unit provides precise temperature control, whisper-quiet operation, and easy installation with the included 16 ft. kit.

Summary at a Glance

  • High Efficiency Diamante Pro™ Ductless Mini Split Heat Pump System
  • Cooling capacity: 12,000 BTU/H with 20 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
  • Low Ambient Range Operation (As low as -4°F in Heating / As high as 122°F in Cooling)

Key Features

High Efficiency Performance (20 SEER2)

Save more on energy costs with one of the most efficient mini-split systems in its class—ideal for eco-conscious buyers and cost savings.

12,000 BTU Cooling & Heating Capacity

Perfect for spaces up to ~450–550 sq. ft., delivering powerful cooling in summer and dependable heating in winter.

Advanced Inverter Heat Pump Technology

Maintains consistent indoor temperatures while reducing energy consumption and extending system lifespan.

115V Power Supply – Easy Installation

Designed for standard electrical setups, making it a convenient choice for residential applications without requiring complex wiring.

Ultra-Quiet Operation

Enjoy a peaceful environment with low indoor noise levels—perfect for bedrooms, offices, and living areas.

Smart Remote Control & Multiple Modes

Features cooling, heating, dehumidification, fan-only, and sleep modes for total comfort customization.

Modern High-Wall Design

Sleek, compact indoor units blend seamlessly into any home décor.

Why Choose This Pioneer Diamante Pro Mini-Split?

If you're searching for a high-efficiency mini-split air conditioner, this system offers the perfect balance of performance, affordability, and durability. Compared to traditional HVAC systems, this ductless unit eliminates energy losses from ductwork, giving you better efficiency and faster temperature control.

  • 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

Ideal for:

  • Homeowners upgrading from window AC units
  • Room additions, apartments, and condos
  • Garages, studios, and small commercial spaces
  • Energy-conscious buyers looking for low-cost heating and cooling solutions

Technical Information & Performance

  • AHRI Certificate
  • Energy Guide
  • Submittal Sheet
  • System Kit

    • Power Supply: 110~120V, 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: 10.5 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: 217048742
  • Indoor Unit

    • Part Number: WT012ALSI20HLF
    • 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: YN012ALSI20RPF
    • Breaker Needed: 25A (single-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 with Confidence

The Pioneer® Diamante Pro™ 12,000 BTU 20 SEER2 Mini-Split is built for long-lasting performance, energy savings, and superior comfort. Whether you're upgrading your home HVAC system or installing a new ductless AC, this unit delivers professional-grade results at an unbeatable value. Enjoy fast, efficient cooling & heating all year round!

Dimension Chart

31⅞ 8 11½ 31 11½ 19⅜ ¾
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