MRCOOL DIYM227HPW03D07 27K 4-Zone Multi-Zone Mini Split Bundle 9K + 18K 25ft Line Sets R-454B 230V

MRCOOL DIYM227HPW03D07 27K 4-Zone Multi-Zone Mini Split Bundle 9K + 18K 25ft Line Sets R-454B 230V

Experience ultimate comfort and flexibility with the MRCOOL DIYM227HPW03D07 27K 4-Zone Multi-Zone Mini Split Bundle. Designed for homeowners seeking a reliable, energy-efficient cooling and heating solution, this bundle supports four zones, allowing precise temperature control in multiple areas of your home or office. With a 27,000 BTU capacity divided between a 9K and 18K indoor unit, you get tailored performance for each space.

Installation is simple and stress-free thanks to MRCOOL’s DIY technology. Each unit comes with pre-charged line sets and the necessary accessories, allowing you to install your system without professional assistance. The R-454B refrigerant ensures high efficiency and environmentally responsible operation, while the 230V electrical design accommodates standard residential power.

This mini-split bundle is engineered for durability and consistent performance. Its advanced inverter technology optimizes energy consumption, reducing utility costs while maintaining the perfect indoor climate. Quiet operation makes it ideal for bedrooms, living spaces, or work areas where comfort without disruption is critical.

Whether upgrading an existing system or installing a new one, the MRCOOL 4-Zone Multi-Zone Mini Split Bundle delivers versatility, efficiency, and convenience. Each component is carefully designed to provide years of reliable service with minimal maintenance, making it an ideal solution for modern homes.

Features

• DIY installation with pre-charged line sets

• Multi-zone control for up to 4 areas

• Energy-efficient inverter technology

• Uses environmentally friendly R-454B refrigerant

• 230V power compatibility

• Quiet operation for indoor comfort

Specifications

What’s Included 

IN THIS COMPLETE DIY BUNDLE (DIYM227HPW03D07):

• (1) DIY-MULTI4-27HP230D-O 27k BTU 4-Zone Multi-Zone Outdoor Condenser (230V, R-454B)
• (1) DIY-09-HP-WMAH-230D25-O 9k BTU Wall-Mount Air Handler (up to 400 sq. ft.)
• (1) DIY-18-HP-WMAH-230D25-O 18k BTU Wall-Mount Air Handler (up to 800 sq. ft.)
• (1) DIY25-1438-O 25 ft Pre-Charged QuickConnect® Line Set – 1/4” x 3/8” (for 9k)
• (1) DIY25-1412-O 25 ft Pre-Charged QuickConnect® Line Set – 1/4” x 1/2” (for 18k)
• Wireless remotes for each indoor unit
• DIYPRO® communication cable and install accessories (per MRCOOL® kit contents)
• Manufacturer installation manuals & warranty documentation

Frequently Asked Questions (FAQ's)

Q: How many rooms can the DIYM227HPW03D07 bundle handle?

A: This bundle is built for two zones out of the box: a 9k wall mount for a smaller room (up to ~400 sq. ft.) and an 18k wall mount for a larger space (up to ~800 sq. ft.). The condenser supports up to 4 total zones, so you can add more DIY wall mounts or ceiling cassettes later as long as you stay within the condenser’s total BTU limits.

Q: Are the MRCOOL DIY line sets in this bundle pre-charged?

A: Yes. Both DIY25-1438-O and DIY25-1412-O QuickConnect® line sets come pre-charged with R-454B at the factory. You don’t vacuum the lines or handle refrigerant — you simply connect the fittings per the MRCOOL® instructions.

Q: What breaker size do I need for the 27k multi-zone condenser?

A: The DIY-MULTI4-27HP230D-O condenser lists a maximum fuse/breaker of 25A and a minimum circuit ampacity (MCA) of 23A. Always follow local codes and consult a licensed electrician to size wiring and breaker correctly for your installation.

Q: Can I expand later and add more zones?

A: Yes. The condenser can support up to 4 indoor units total. This bundle uses two zones (9k + 18k), so you still have two additional ports available for future MRCOOL® DIY indoor units, as long as the total connected BTUs stay within MRCOOL’s guidelines.

Q: Is this really DIY, or do I still need an HVAC tech?

A: MRCOOL® designed the DIY series specifically so homeowners can install it themselves with common tools. The QuickConnect® pre-charged line sets and DIYPRO® cable are what make this possible. If you’re comfortable drilling, mounting brackets, and running electrical under code, you can install it yourself. If not, you can still hire a pro and benefit from the DIY design.