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Pioneer Quantum Ultra 18,000 BTU High-Wall Ductless Mini Split

SKU: pi17640k  |  Model: WYT018GLSI24RL-10S

10% Off with code PIONEER10

$1,519.00 $1,699.00
Line Set Length:

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Manufacturer's Warranty

5-Year Parts and Compressor Limited Warranty (with required warranty registration)

What's In The Box?
  • Pioneer 18,000 BTU Quantum Ultra High-Wall Ductless Mini Split Indoor Unit WT018GLSI24HLG
  • Pioneer 18,000 BTU Quantum Ultra High-Wall Ductless Mini Split Outdoor Unit YN018GLSI24RPG
  • 10 to 50-Foot Line Set
  • Wireless Remote Control
  • Remote Control Wall Holder
  • Wall Passage Sleeve
  • Installation Hardware
  • Owner’s Guide

Info & Guides

Pioneer’s 18,000 BTU Quantum Ultra High-Wall Series Ductless Mini-Split gives you year-round temperature control in a single, space-saving system. Built on variable-speed inverter technology, it delivers precise cooling and heating for mid-sized rooms while keeping energy use in check.

The wall-mounted design integrates seamlessly into new construction or retrofit projects, providing a reliable comfort solution without the complexity of ductwork.

Key Features and Benefits of the Pioneer 18,000 BTU Quantum Ultra Mini-Split

  • Variable-Speed Technology: The variable-speed inverter technology automatically modulates operation from 4,000 to 21,000 BTU, so you enjoy steady temperatures and lower utility costs.
  • High Efficiency Ratings: With a 23 SEER2 and a 9.5 HSPF2 rating, you can lower your energy use over comparable systems and save on energy costs.
  • Wide Operating Range: Dependable performance from -13 degrees F to 131 degrees F lets you maintain comfort in most climates without backup heat or cooling.
  • Wi-Fi Enabled Control: Use the Pioneer Airlink app to change modes, set schedules, or check the system's status from anywhere, adding convenience to daily operation.
  • Dual-Axis Airflow: Motorized horizontal and vertical louvers distribute air evenly, eliminating hot or cold spots across 500- to 750-square-foot spaces.
  • Quiet Indoor Sound: Operating as low as 34 dB, the system is unobtrusive in bedrooms, offices, or studios.
  • Four-Mode Flexibility: Cooling, heating, dry, and ventilation modes let you address humidity or air circulation needs beyond simple temperature control.
  • ECO and Sleep Modes: Automatic adjustments trim power draw during off-peak hours, which helps lower monthly bills.
  • Self-Cleaning Coil: The built-in drying cycle reduces moisture inside the indoor coil, limiting mold growth and maintenance tasks.
  • Eco-Friendly Refrigerant: The R-454B refrigerant has a lower global warming potential than legacy formulas, supporting sustainability goals and upcoming regulatory requirements.
  • Line Set Included: This model includes a 10 to 50-foot 1/4 x 1/2 Line Set.

Note: This mini-split air conditioner must be installed by a qualified professional.

Cold-Weather Readiness

If you live in a region with harsh winters, you need equipment that won't quit when temperatures drop. The Quantum Ultra maintains full inverter operation down to -13 degrees F, thanks to advanced compressor and control logic that prevent frosting and keep refrigerant flow steady. When outdoor temperatures fluctuate, the system automatically ramps up speeds to preserve indoor comfort without excessive cycling, which helps extend component life and reduces wear. This capability makes the mini-split a practical replacement for baseboard heaters or supplemental resistance heat, providing a more energy-efficient way to cover colder seasons and extreme cold snaps.

Sylvane’s Expert Take

This Pioneer mini-split delivers a solid balance of capacity, efficiency, and low-temperature performance for medium-sized zones. It offers smartphone control, quiet operation, and true four-season functionality in a single package. Its wide operating range and eco-conscious refrigerant make it a forward-looking choice for both residential remodels and light commercial spaces. If you want dependable comfort without the complexity of ducts, this system deserves a spot on your short list.

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