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MRCOOL DIY Mini Split - 45,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091818

SKU DIY-B-348HP091818

by MRCOOL
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$4,704.00

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MRCOOL DIY Mini Split - 45,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091818

The MRCOOL 4th Generation DIY Mini Split provides advanced, energy-efficient climate control for multiple zones in your home, garage, workshop, or other spaces—all designed for easy self-installation without professional help.


  • Easy Installation: Features MRCOOL’s patented Pre-Charged Quick Connect Line Sets, allowing for simple, tool-free installation without vacuuming or specialized equipment
  • Durability: Protected by Gold Fin® coating to resist corrosion and extend lifespan
  • High Efficiency: 20.5 SEER2 and 8.5 HSPF-5 rating for excellent energy savings
  • Cold Climate Performance: Reliable heating operation down to outdoor temperatures of 5°F
  • Warranty: 7-year compressor warranty and 5-year parts warranty for peace of mind

  • Flexible Modes: COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP for year-round comfort
  • Coverage Area: Ideal for rooms between 180 to 375 sq. ft., perfect for smaller spaces or cozy corners
  • Smart Control: Compatible with the SmartHVAC app for remote control from anywhere
  • Compact & Lightweight: Easy to mount on most interior walls with minimal effort
  • Quick Connect: Uses the Pre-Charged Quick Connect Line Set for fast, hassle-free installation

  • Versatile Operation: Supports COOL, HEAT, AUTO, DRY, and SLEEP modes
  • Coverage Area: Designed for larger rooms or open areas between 501 to 750 sq. ft.
  • Smart Control: Full compatibility with the SmartHVAC app for remote management
  • Effortless Installation: Lightweight and compact for quick mounting
  • Quick Connect: Pre-Charged Quick Connect Line Sets simplify setup without extra tools

This MRCOOL DIY Mini Split 45,000 BTU 3 Zone system offers a powerful, flexible, and energy-efficient HVAC solution that you can install yourself. Its innovative quick connect technology, smart app control, and multi-zone design make it perfect for tailored comfort in various spaces without the need for professional installation.

For more information, you can explore product listings and detailed specs from MRCOOL sources.

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Frequently Asked Questions About MRCOOL DIY Mini Split - 45,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091818

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Product Overview

  • Zone / ROOM:

    Zone / ROOM: 3 Zone

  • Air Handler BTU:

    Air Handler BTU: 9k + 18k + 18k

  • Coverage Area:

    Coverage Area: 1875 sq.ft

  • Condenser BTU:

    Condenser BTU: 45k

  • Outdoor Operating Temp (Cool/ heat):

    Outdoor Operating Temp (Cool/ heat): -22°F to 75°F for heating | -22°F to 122°F for cooling

  • Warranty

    Warranty 7 Year Compressor & 5 Year Parts

MRCOOL DIY Mini Split - 45,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump, DIY-B-348HP091818 Reviews