MRCOOL DIY 5th Gen 2-Zone 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with (16ft+16ft) Pre-Charged Line Sets (9K+9K) Air-handlers

MRCOOL DIY 5th Gen 2-Zone 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with (16ft+16ft) Pre-Charged Line Sets (9K+9K) Air-handlers

Take control of your indoor comfort with the MRCOOL DIY 5th Gen 2-Zone 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump system — an innovative, homeowner-friendly solution for powerful heating and cooling without the need for professional installation. Designed for modern living, this multi-zone HVAC system lets you cool or heat two separate spaces of up to 400 sq. ft. each independently, delivering personalized comfort exactly where you need it. With energy-efficient performance and advanced technology, this system keeps your home comfortable year-round while helping reduce energy costs.

What sets this system apart is its truly DIY-friendly design. The included pre-charged Quick-Connect® line sets eliminate the hassle of refrigerant handling and vacuuming, making installation simple with basic hand tools — no HVAC license or special tools required. You’ll enjoy rapid setup and the freedom to manage your indoor climate on your terms.

Engineered for both efficiency and durability, this 5th generation system boasts up to 23.9 SEER2 cooling and excellent heating performance, so it keeps you comfortable throughout hot summers and cold winters. Its reliable heat pump design ensures dependable heating even in temperatures below freezing, making it a versatile choice for year-round comfort.

Smart controls provide additional convenience — operate your system via the MRCOOL Smart Controller app or use voice commands with Amazon Alexa and Google Assistant. From quiet operation to self-diagnostics and automatic restart after power outages, this system is built for everyday ease and comfort.

Features

• DIY Installation: Comes with pre-charged Quick-Connect® line sets for easy setup without professional HVAC tools.

• Multi-Zone Comfort: Independently heat or cool two rooms up to 400 sq. ft. each.

• High Efficiency: Up to 23.9 SEER2 cooling and excellent heating performance for year-round energy savings.

• Smart Controls: Compatible with MRCOOL Smart Controller app, Amazon Alexa, and Google Assistant.

• Durability: Gold Fin® condenser resists corrosion and enhances longevity.

• Quiet Operation: Features sleep and mute modes for reduced noise.

• Self-Diagnostics & Alerts: Easy-to-read digital display shows error codes, filter reminders, and more.

• Automatic Restart: Remembers last settings after a power interruption.

• Warranty Protection: 7-year compressor replacement and 5-year parts warranty.

Specifications

What's Included

• 1 18k BTU Condenser 

• 2 9k BTU Air Handler

• 2 x 16ft  DIY® Quick Connect® Pre-Charged Line Sets

Frequently Asked Questions (FAQ's)

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 - 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:

• 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. Lifetime Replacement Warranty with registration in the MRCOOL® Care Program and lifetime technical support from MRCOOL.

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