Welcome to the complete MRCOOL Mini Split collection at MRCOOL DIY Direct. Here you’ll find everything from single-zone DIY mini split kits to powerful multi-zone systems—along with pre-charged line sets, wall-mounted and ceiling cassette indoor units, and both DIY and non-DIY options. Easily filter by BTU size, zone configuration, installation type, or generation to find the perfect HVAC solution for your home or business.

What Makes Our Collection Unique?

• DIY Pre-Charged Systems: Save time and money with pre-charged Quick Connect® line sets
• Build Your System: Use our Multi-Zone Customizer Tool to design your own system from 2 to 6 zones
• All Sizes Covered: From 9k to 61k BTU – for everything from bedrooms to full homes
• DIY & Pro Install Options: Choose based on your skill level or installer access
• Fast Shipping & Trusted Support: We're a top-rated MRCOOL dealer with nationwide delivery

How to Choose the Right System

• Not sure what size you need? Try our BTU Sizing Calculator
• Have questions? Contact our expert team
• Explore DIY vs. non-DIY models with different refrigerants (R‑454B vs. R‑410A)
• Choose between wall-mounted, ceiling cassette, or ducted indoor unit styles

Frequently Asked Questions

Can I shop by system type?
Yes! Filter by single or multi-zone, DIY vs. pro-install, BTU size, and indoor unit style using the collection filters.

Are DIY units really that simple to install?
Yes. DIY systems are fully pre-charged and use sealed Quick Connect® fittings. Learn how the pre-charged system works here.

Can I build a complete multi-zone setup myself?
Absolutely. Use our Multi-Zone Customizer Tool to configure up to 6 zones with personalized air handler combinations.

Where can I get help with BTU sizing?
Try our Sizing Guide or contact us directly.

Why choose MRCOOL DIY Direct?
We're a trusted nationwide MRCOOL dealer offering unbeatable support, fast shipping, expert guidance, and extended warranty options. Learn more about us.