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MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,566.00Sale price $9,566.00 Regular price$11,957.50You Save: $2,391.50Unit price per✅ In StockShop NowSave $2,391.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,585.00Sale price $9,585.00 Regular price$11,981.25You Save: $2,396.25Unit price per✅ In StockShop NowSave $2,396.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 9K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,604.00Sale price $9,604.00 Regular price$12,005.00You Save: $2,401.00Unit price per✅ In StockShop NowSave $2,401.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,577.00Sale price $9,577.00 Regular price$11,971.25You Save: $2,394.25Unit price per✅ In StockShop NowSave $2,394.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 12K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,596.00Sale price $9,596.00 Regular price$11,995.00You Save: $2,399.00Unit price per✅ In StockShop NowSave $2,399.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 12K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,615.00Sale price $9,615.00 Regular price$12,018.75You Save: $2,403.75Unit price per✅ In StockShop NowSave $2,403.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (9K + 18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,634.00Sale price $9,634.00 Regular price$12,042.50You Save: $2,408.50Unit price per✅ In StockShop NowSave $2,408.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,588.00Sale price $9,588.00 Regular price$11,985.00You Save: $2,397.00Unit price per✅ In StockShop NowSave $2,397.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (12K + 12K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,607.00Sale price $9,607.00 Regular price$12,008.75You Save: $2,401.75Unit price per✅ In StockShop NowSave $2,401.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (12K + 12K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,626.00Sale price $9,626.00 Regular price$12,032.50You Save: $2,406.50Unit price per✅ In StockShop NowSave $2,406.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 55,000 BTU 22 SEER2 (12K + 18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,646.00Sale price $9,646.00 Regular price$12,057.50You Save: $2,411.50Unit price per✅ In StockShop NowSave $2,411.50 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 6 K + 6 K)
Regular price $9,194.00Sale price $9,194.00 Regular price$11,492.50You Save: $2,298.50Unit price per✅ In StockShop NowSave $2,298.50 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 6 K + 9 K)
Regular price $9,293.00Sale price $9,293.00 Regular price$11,616.25You Save: $2,323.25Unit price per✅ In StockShop NowSave $2,323.25 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 6 K + 12 K)
Regular price $9,304.00Sale price $9,304.00 Regular price$11,630.00You Save: $2,326.00Unit price per✅ In StockShop NowSave $2,326.00 -
MRCOOL DIY 5th Gen Multi-Zone 5-Zone 36,000 BTU 23 SEER2 (6K + 6K + 6K + 6K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $9,323.00Sale price $9,323.00 Regular price$11,653.75You Save: $2,330.75Unit price per✅ In StockShop NowSave $2,330.75 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 9 K + 9 K)
Regular price $9,392.00Sale price $9,392.00 Regular price$11,740.00You Save: $2,348.00Unit price per✅ In StockShop NowSave $2,348.00 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 9 K + 12 K)
Regular price $9,403.00Sale price $9,403.00 Regular price$11,753.75You Save: $2,350.75Unit price per✅ In StockShop NowSave $2,350.75 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 6 K + 9 K + 18 K)
Regular price $9,422.00Sale price $9,422.00 Regular price$11,777.50You Save: $2,355.50Unit price per✅ In StockShop NowSave $2,355.50 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 9 K + 9 K + 9 K)
Regular price $9,491.00Sale price $9,491.00 Regular price$11,863.75You Save: $2,372.75Unit price per✅ In StockShop NowSave $2,372.75 -
MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ceiling Cassette Mini Split (6 K + 6 K + 9 K + 9 K + 12 K)
Regular price $9,502.00Sale price $9,502.00 Regular price$11,877.50You Save: $2,375.50Unit price per✅ In StockShop NowSave $2,375.50
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.
Shop All MRCOOL Mini Split Systems – including Single-Zone, Multi-Zone, DIY, and Professional Installation models. Our collection features the newest 5th Generation R‑454B systems, reliable 4th Gen legacy units, and a wide variety of indoor options like wall-mounted air handlers and ceiling cassettes. Easily filter by BTU capacity, number of zones, generation, or install type to find the perfect heating and cooling solution for your space.