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MINI SPLITS
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MRCOOL DIY 5th Gen 3-Zone 27,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (6K+9K+12K), DIY3-B-27HP060912

DIY3-B-27HP060912

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What's Included

27K BTU Condenser

Quantity: 1

6K BTU Air Handler

Quantity: 1

9K BTU Air Handler

Quantity: 1

12K BTU Air Handler

Quantity: 1

Remote Control

Quantity: 3

Take full control of your indoor climate with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System – a cost-effective and straightforward solution for achieving powerful, energy-efficient heating and cooling without professional installation.

  • Three Rooms, Customized Comfort: Effectively heat or cool three separate areas that are up to 200 sq. ft., 350 sq. ft., and 500 sq. ft., with independent temperature settings tailored to individual preferences.
  • DIY Made Simple: Eliminate costly installation fees – no HVAC certification or specialized equipment needed. If you’re comfortable with standard hand tools, you can handle the setup yourself.
  • Efficiency That Pays Off: Offering up to 23 SEER2 cooling efficiency and 9.5 HSPF2-4heating capability, this system is designed to maximize energy savings throughout the year.
  • Dependable in Every Season: Engineered for reliability, it maintains strong heating performance even in temperatures as low as -13°F.
  • Comprehensive Warranty Coverage: Protected by a 7-Year Compressor Warranty and 5-Year Parts Warranty for peace of mind.

From peak summer heat to extreme winter cold, the MRCOOL DIY Mini Split provides consistent comfort while helping you keep utility costs under control. Practical. Reliable. Efficient.

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System Details

Coverage Area Guide

6,000 BTU

100 - 150 square feet

9,000 BTU

151 - 350 square feet

12,000 BTU

351 - 500 square feet

18,000 BTU

501 - 750 square feet

24,000 BTU

751 - 1,000 square feet

36,000 BTU

1,001 - 1,500 square feet
Note: BTU requirements may vary based on factors like insulation, ceiling height, sun exposure, appliances, and occupancy. Contact our team for personalized assistance.

Frequently Asked Questions

The 5th Generation MRCOOL DIY Mini Splits bring a host of cutting-edge advancements over their 4th Gen predecessor, prioritizing energy efficiency, innovative technology, and environmental sustainability.

Discover what’s new in the 5th Gen:

  • Eco-Conscious R-454B Refrigerant: A new refrigerant with a reduced global warming potential (GWP), aligning with the latest HVAC industry standards.
  • Superior Energy Savings: Elevated SEER2 ratings for enhanced efficiency and optimized performance for lower energy costs.
  • Improved Durability and Performance: Upgraded internal components for a more reliable and effective heating and cooling system.

The MRCOOL DIY systems are designed with the homeowner's convenience in mind. You can easily set up the indoor and outdoor units without any specialized HVAC tools by using the pre-charged Quick Connect lines. For safety and compliance with local codes, a licensed electrician must handle the electrical installation.

Yes! All MRCOOL mini splits are heat pump systems that offer both heating and cooling.

The MRCOOL 5th Generation systems with 18K, 27K, 36K, or 48K BTU condensers deliver dependable heating performance in temperatures as low as -13°F.

For even greater cold-weather capability, systems equipped with the 55K BTU condenser can operate effectively down to -22°F.

As a general guideline, plan for 20 BTU per square foot of space. Here’s a quick reference:

  • 6,000 BTU: 100–150 sq ft
  • 9,000 BTU: 151–350 sq ft
  • 12,000 BTU: 351–500 sq ft
  • 18,000 BTU: 501–750 sq ft
  • 24,000 BTU: 751–1,000 sq ft
  • 36,000 BTU: 1,001–1,500 sq ft

Do keep in mind that factors like insulation quality, ceiling height, sun exposure, heat from appliances, and occupancy may affect performance. For personalized guidance, reach out to our team.

Yes! The MRCOOL 5th Gen mini split systems can be controlled remotely via the MRCOOL Smart HVAC App and can also be paired with Google Assistant and Amazon Alexa.

The MRCOOL 5th Generation DIY Mini-Split systems come with MRCOOL's longest mini split warranty protection:

  • 7-Year Compressor Replacement Warranty: If the compressor fails within seven years, MRCOOL will supply a replacement.
  • 5-Year Parts Warranty: All system components are covered for five years from the purchase date.

For the full warranty information, please reference the warranty document here.

Our Mission

Our Teams Focus

At MRCOOL HVAC Supply, we strive to deliver the highest quality residential and commercial HVAC systems. Our mission is to provide an exceptional customer experience by helping you find the perfect system to meet your needs while saving money. With units designed for easy installation and minimal reliance on licensed technicians, MRCOOL's products offer unparalleled convenience. Even for systems requiring professional installation, MRCOOL’s user-friendly designs ensure you can enjoy a climate-controlled environment quickly and efficiently.

At MRCOOL HVAC Supply, we strive to deliver the highest quality residential and commercial HVAC systems. Our mission is to provide an exceptional customer experience by helping you find the perfect system to meet your needs while saving money. With units designed for easy installation and minimal reliance on licensed technicians, MRCOOL offers unparalleled convenience. Even for systems requiring professional installation, MRCOOL’s user-friendly design ensures you can enjoy a climate-controlled environment quickly and efficiently.

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