MRCOOL DIY 5th Gen 2‑Zone 27,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre‑Charged (16ft+16ft) Line Sets (6K+12K)

MRCOOL DIY 5th Gen 2‑Zone 27,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre‑Charged (16ft+16ft) Line Sets (6K+12K)

Experience customizable climate comfort with the MRCOOL DIY 5th Gen 2‑Zone Mini Split Air Conditioner & Heat Pump, a high‑efficiency ductless system engineered for heating and cooling multiple rooms without the need for professional installation. Designed with homeowners in mind, this system pairs powerful performance with intuitive DIY convenience — revolutionizing how you manage indoor comfort.

The system includes pre‑charged Quick‑Connect® line sets, eliminating the need for refrigerant handling or vacuuming. Simply connect the indoor and outdoor units with basic hand tools to start enjoying year‑round comfort. With up to 23 SEER2 cooling efficiency and 9.5 HSPF2‑4 heating performance, this system delivers excellent energy savings and reliable performance even in colder climates.

Perfect for homes without traditional ductwork, this 2‑zone configuration allows independent climate control for two spaces — such as a bedroom and living area — tailored to your comfort needs. A robust warranty backs your investment with 7‑year compressor replacement and 5‑year parts coverage for added peace of mind.

Whether it’s cooling on sweltering summer days or heating on chilly winter nights, the MRCOOL DIY system offers a flexible, efficient HVAC solution that’s both smart and simple to install.

Features

• DIY‑Friendly Installation: Pre‑charged Quick‑Connect® line sets for easy setup without handling refrigerant.

• High Efficiency: Up to 23 SEER2 cooling and 9.5 HSPF2‑4 heating for energy savings.

• Year‑Round Comfort: Provides reliable heating even in cold outdoor temperatures.

• Independent Zone Control: Manage two rooms separately for customized comfort.

• Warranty Protection: 7‑year compressor replacement and 5‑year parts coverage.

Specifications

What's Included

This bundle includes:
✔ DIY-MULTI4-27HP230D-O — 27,000 BTU 5th Gen 4-Zone Condenser
✔ DIY-06-HP-WMAH-230D25-O — 6,000 BTU Wall Mount Air Handler
✔ DIY-12-HP-WMAH-230D25-O — 12,000 BTU Wall Mount Air Handler
✔ (2) DIY16-1438-O — 16 ft Pre-Charged Quick Connect® Line Sets

Frequently Asked Questions

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:

• Next-Gen R-454B Refrigerant: A more environmentally friendly refrigerant with lower global warming potential (GWP), compliant with the latest HVAC regulations.
• Higher Energy Efficiency: Improved SEER2 ratings for greater energy savings and optimized performance.
• 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 - 200 sq ft
• 9,000 BTU = 150 - 400 sq ft
• 12,000 BTU = 351- 550 sq ft
• 18,000 BTU = 501 – 800sq 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:

• 7-Year Compressor Replacement Warranty: This warranty ensures that if the compressor fails within the first seven years, MRCOOL will provide a replacement.
• 5-Year Parts Warranty: This warranty covers all parts of the system for five years from the date of purchase.