62 products

Welcome to our full MRCOOL Mini Split collection — featuring everything from **single-zone DIY kits** to **multi-zone systems**, **pre-charged ceiling cassettes**, and **professional-grade non-DIY units**. Every system is backed by robust support, fast shipping, and strong warranty coverage.

All-In-One Overview

  • DIY vs. Non-DIY Kits: DIY units come pre-charged with R‑454B refrigerant; professional units are ideal for licensed installers.
  • Single-Zone Options (9k–36k BTU): Great for focused spaces like bedrooms and offices.
  • Multi-Zone Systems (2–6 zones, 18k–61k BTU): Perfect for whole-home zoning flexibility.
  • Indoor Unit Styles: Choose between wall-mounted units, ceiling cassettes, and concealed ducted models.
  • Latest 5th Gen Models: EPA-compliant R‑454B refrigerant, high SEER ratings, and quick-connect installation.

What to Consider When Choosing

  • Installation Type: DIY pre-charged systems vs. professional-installed non-DIY units
  • BTU Size & Room Coverage: Use our BTU Sizing Calculator to determine your needs
  • R‑454B vs. R‑410A: Newer Gen 5 units use eco-friendly R‑454B; older units use R‑410A
  • Wiring & Controls: Choose models compatible with Wi-Fi, app control, or traditional remote systems
  • Warranty & Support: 5-year parts / 7-year compressor standard; extended plans available

FAQs

Can I shop by system type?
You can filter this page by DIY vs. non-DIY, single vs. multi-zone, indoor styles, and capacity ranges.

Are DIY units easy to install?
Yes! DIY models are pre-charged with sealed Quick Connect fittings—no vacuum pump, refrigerant licenses, or brazing required.

What refrigerant is used?
All 5th Gen units come with eco-friendly R-454B, while older models use R-410A.

Do I need to choose the latest model?
5th Gen models are future-proofed for efficiency and EPA compliance. Legacy models remain available for direct replacements.

Where can I get help with sizing?
Use our size calculator or contact our expert support.

Explore MRCOOL DIY Single-Zone Mini Split Systems – available in BTU sizes from 9k to 36k, featuring both the latest 5th Generation R‑454B models and select discontinued 4th Gen systems. These systems are ideal for garages, bedrooms, workshops, home offices, and more. All units are DIY‑friendly, pre‑charged with refrigerant, and ship fast with expert support and warranty options.