HOT ! MRCOOL DIY 5th Gen Multi‑Zone 15,000 BTU Ductless Mini Split Air Conditioner & Heat Pump System 2‑Zone DIYM218HPW01D06

MRCOOL DIY 5th Gen Multi‑Zone 15,000 BTU Ductless Mini Split Air Conditioner & Heat Pump System 2‑Zone DIYM218HPW01D06

The MRCOOL DIY 5th Gen Multi‑Zone 15,000 BTU Ductless Mini Split Air Conditioner & Heat Pump System 2‑Zone DIYM218HPW01D06 is designed to provide customizable year‑round comfort in two separate interior spaces — all with true DIY installation simplicity. This system combines a powerful 18,000 BTU outdoor condenser with two indoor wall‑mounted air handlers — one 6,000 BTU and one 9,000 BTU unit — delivering efficient heating and cooling tailored to the needs of each zone.

Installation is made homeowner‑friendly with pre‑charged QuickConnect® line sets that arrive sealed with R‑454B refrigerant, eliminating the need for vacuum pumps, refrigerant gauges, or specialized HVAC tools. This bundle includes two 25 ft pre‑charged line sets, offering flexibility in indoor unit placement and helping simplify setup without costly professional labor. The use of modern inverter compressor technology ensures quiet, smooth operation while maintaining high energy efficiency.

Each indoor unit includes a wireless remote for independent temperature control, allowing personalized comfort settings for each zone. The system also supports smart control capability, enabling remote management via mobile app and voice assistant integration. With its corrosion‑resistant outdoor components and comprehensive warranty coverage, this MRCOOL DIY® 2‑Zone mini split system delivers reliable performance and zoned comfort all year long.

Features

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  Multi‑Zone Comfort: Two independently controlled climate zones for personalized heating and cooling.

  
  


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  Indoor Units Included: One 6,000 BTU and one 9,000 BTU wall‑mounted air handler.

  
  


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  DIY‑Friendly Installation: Includes pre‑charged QuickConnect® line sets — no vacuum pumps or professional HVAC tools needed.

  
  


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  Line Sets Included: Two 25 ft pre‑charged QuickConnect® line sets for flexible placement.

  
  


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  Eco‑Friendly Refrigerant: Uses R‑454B refrigerant for improved efficiency and reduced environmental impact.

  
  


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  DC Inverter Technology: Smooth, quiet, and energy‑efficient operation across heating and cooling.

  
  


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  Wireless Remote Controls: Independent remotes for each indoor unit.

  
  


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  Smart Control Capable: Compatible with remote app and voice assistant systems for added convenience.

  
  


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  Durable Construction: Corrosion‑resistant outdoor unit designed for long‑term reliability.

  
  


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  Ideal Application: Great for zoned HVAC comfort in multi‑room homes or smaller dwellings.

  
  

Specifications

Air Handler Compatibility

This condenser supports up to three indoor air handlers with a maximum combined capacity of 24,000 BTU. Available air handler sizes: 6K, 9K, and 12K BTU.

Examples of Compatible Combinations:

• 6K + 6K + 12K (24,000 BTU)


• 6K + 9K + 9K (24,000 BTU)


• 6K + 6K + 9K (21,000 BTU)


• 6K + 9K + 6K (21,000 BTU)


• 9K + 9K (18,000 BTU – one port unused)


• 6K + 12K (18,000 BTU – one port unused)

Recommended Wire Sizing

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  Recommended: 12 AWG copper wire – safe for 18A minimum circuit ampacity


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  One Size Smaller (14 AWG): Not recommended – may overheat under full load and violate electrical code


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  One Size Larger (10 AWG): Offers lower voltage drop and extra safety margin

Ideal Coverage Area

Perfect for spaces ranging from 750 to 1,100 sq. ft., depending on your climate zone and insulation quality.

Whether it’s hot summer days or freezing winter nights, the MRCOOL® DIY® Mini Split keeps your home comfortable and your energy bills low. Smart. Simple. Affordable.

Frequently Asked Questions & Answers 

What\'s the difference between the 5th Gen and 4th Gen?

The 5th Gen MRCOOL® DIY® Mini Split offers several key upgrades over the 4th Gen, focusing on efficiency, advanced technology, and eco-friendliness.

Here’s what’s new with the 5th Gen:

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  Next-Gen R-454B Refrigerant: A more environmentally friendly refrigerant with lower global warming potential (GWP), compliant with the latest HVAC regulations.


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  Higher Energy Efficiency: Improved SEER2 ratings for greater energy savings and optimized performance.


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  Enhanced System Reliability: Upgraded components for better heating and cooling performance.
  

Can I install it myself, or do I need a professional?

The MRCOOL® DIY® system is designed for homeowners and doesn’t require HVAC tools. You can install the indoor and outdoor units yourself using the pre-charged Quick Connect® lines. However, a licensed electrician is required for the electrical hookup to ensure safety and code compliance.

Does it work in cold weather?

Yes. MRCOOL® 5th Gen systems feature low-ambient heating and can provide reliable heat even when outdoor temperatures drop to around 5°F.

How do I know what BTU size I need for my rooms?

A general rule of thumb is 20 BTU per square foot of space. Here\'s a rough guide:

• 6,000 BTU = 100 - 200sq ft


• 9,000 BTU = 150 - 400sq ft


• 12,000 BTU = 351- 550 sq ft


• 18,000 BTU = 501 – 800 sq ft


• 24,000 BTU = 751 – 1,050 sq ft


• 36,000 BTU = 1,001 - 1,550 sq ft

Some additional factors may impact performance such as insulation, ceiling height, sun exposure and the number of appliances in the room. For assistance, contact our Product Experts.

Does it heat as well as cool?Yes. All 5th Gen models are heat pumps, providing both heating and cooling for year-round comfort.

Is it Wi-Fi compatible?

Yes. The MRCOOL® SmartHVAC app allows smartphone control and works with Amazon Alexa and Google Assistant.

What is the warranty?

The MRCOOL® 5th Generation DIY Mini-Split systems offer the following warranty coverage:

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  7-Year Compressor Replacement Warranty: This warranty ensures that if the compressor fails within the first seven years, MRCOOL will provide a replacement.


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  5-Year Parts Warranty: This warranty covers all parts of the system for five years from the date of purchase. Limited Lifetime Replacement Warranty with registration in the MRCOOL® Care Program

Note: Always verify system configuration before purchasing. Specifications may change during production. Images may be representative only.