MRCOOL 55K 6‑Zone DIY Mini Split System w/ 6K + 36K Air Handlers Two 16 ft Pre‑Charged Line Sets DIYM255HPW00D00

MRCOOL 55K 6‑Zone DIY Mini Split System w/ 6K + 36K Air Handlers Two 16 ft Pre‑Charged Line Sets DIYM255HPW00D00

The MRCOOL 55K 6‑Zone DIY Mini Split System w/ 6K + 36K Air Handlers Two 16 ft Pre‑Charged Line Sets DIYM255HPW00D00 is a powerful and flexible climate control solution designed for homeowners who value comfort, customization, and true DIY installation ease. This multi‑zone system pairs a high‑capacity 55,000 BTU 5th Generation MRCOOL DIY condenser with intelligently chosen indoor units — a 6K air handler for smaller spaces and a 36K unit for larger rooms — creating a system ideal for open living areas, basements, workshops, and multiple room configurations.

Thanks to advanced QuickConnect® technology, this system comes with pre‑charged R‑454B refrigerant line sets, eliminating the need for vacuum pumps, refrigerant gauges, or contractor labor. Installation can be completed confidently by a savvy DIYer, saving time and money while providing efficient cooling and heating performance throughout your home.

Once installed, you’ll enjoy modern control options and energy‑efficient operation — from the MRCOOL Smart HVAC Controller app to voice compatibility with Amazon Alexa and Google Home. This system’s inverter technology and corrosion‑resistant components ensure quieter operation, reduced utility costs, and reliable year‑round comfort.

Built with durability and homeowner convenience in mind, the MRCOOL DIYM255HPW00D00 includes everything needed for installation and everyday usability. Wireless remotes and mounting hardware are included, making it easy to get comfortable quickly in every zone of your living space. 

Features

• 55,000 BTU multi‑zone condenser for large coverage up to ~1,750 sq ft.

• Includes 6K and 36K wall‑mounted air handlers for flexible zone comfort.

• DIY® QuickConnect® pre‑charged line sets — no vacuum pump or refrigerant tools required.

• Smart control via MRCOOL Smart HVAC app and voice integration with Alexa/Google Home.

• DC inverter technology for quieter operation and better efficiency.

• Gold Fin® corrosion‑resistant coil for long‑lasting outdoor performance.

• Follow Me® temperature sensing for precise comfort tracking.

• Wireless remotes and included mounting hardware for easy setup.

Specifications

What’s Included 

Outdoor Unit

• (1) MRCOOL® DIY® 55K 6-Zone Condenser
  DIY-MULTI6-55HP230D-O

Indoor Units

• (1) MRCOOL® 6K Wall-Mount Air Handler
• (1) MRCOOL® 36K Wall-Mount Air Handler

Line Sets

• (1) 16-ft DIY® QuickConnect® Line Set (1/4 × 3/8)
• (1) 16-ft DIY® QuickConnect® Line Set (3/8 × 5/8

Accessories

• Wireless remotes
• Mounting hardware
• MRCOOL® Smart HVAC Controller®
• Installation manuals

Frequently Asked Questions (FAQ's)

Can I add more indoor units later?

Yes. The condenser supports up to 6 zones if additional air handlers are added.

Is this truly DIY?

Yes. DIY® QuickConnect® eliminates refrigerant handling and specialty HVAC tools.

Is this system efficient?

Extremely. R-454B refrigerant and inverter technology reduce energy usage year-round.

Does it support smart home control?

Yes. Works with the MRCOOL® Smart HVAC Controller®, Alexa, and Google Home.