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MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (9K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,306.00Sale price $8,306.00 Regular price$10,382.50You Save: $2,076.50Unit price per✅ In StockShop NowSave $2,076.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (9K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,298.00Sale price $8,298.00 Regular price$10,372.50You Save: $2,074.50Unit price per✅ In StockShop NowSave $2,074.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,309.00Sale price $8,309.00 Regular price$10,386.25You Save: $2,077.25Unit price per✅ In StockShop NowSave $2,077.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 6K + 6K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,561.00Sale price $8,561.00 Regular price$10,701.25You Save: $2,140.25Unit price per✅ In StockShop NowSave $2,140.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 6K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,660.00Sale price $8,660.00 Regular price$10,825.00You Save: $2,165.00Unit price per✅ In StockShop NowSave $2,165.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,671.00Sale price $8,671.00 Regular price$10,838.75You Save: $2,167.75Unit price per✅ In StockShop NowSave $2,167.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 6K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,690.00Sale price $8,690.00 Regular price$10,862.50You Save: $2,172.50Unit price per✅ In StockShop NowSave $2,172.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,759.00Sale price $8,759.00 Regular price$10,948.75You Save: $2,189.75Unit price per✅ In StockShop NowSave $2,189.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,770.00Sale price $8,770.00 Regular price$10,962.50You Save: $2,192.50Unit price per✅ In StockShop NowSave $2,192.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 9K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,789.00Sale price $8,789.00 Regular price$10,986.25You Save: $2,197.25Unit price per✅ In StockShop NowSave $2,197.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,781.00Sale price $8,781.00 Regular price$10,976.25You Save: $2,195.25Unit price per✅ In StockShop NowSave $2,195.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,800.00Sale price $8,800.00 Regular price$11,000.00You Save: $2,200.00Unit price per✅ In StockShop NowSave $2,200.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 6K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,819.00Sale price $8,819.00 Regular price$11,023.75You Save: $2,204.75Unit price per✅ In StockShop NowSave $2,204.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 9K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,858.00Sale price $8,858.00 Regular price$11,072.50You Save: $2,214.50Unit price per✅ In StockShop NowSave $2,214.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,869.00Sale price $8,869.00 Regular price$11,086.25You Save: $2,217.25Unit price per✅ In StockShop NowSave $2,217.25 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 9K + 9K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,888.00Sale price $8,888.00 Regular price$11,110.00You Save: $2,222.00Unit price per✅ In StockShop NowSave $2,222.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,880.00Sale price $8,880.00 Regular price$11,100.00You Save: $2,220.00Unit price per✅ In StockShop NowSave $2,220.00 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22SEER2 (6K + 9K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,899.00Sale price $8,899.00 Regular price$11,123.75You Save: $2,224.75Unit price per✅ In StockShop NowSave $2,224.75 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 9K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,918.00Sale price $8,918.00 Regular price$11,147.50You Save: $2,229.50Unit price per✅ In StockShop NowSave $2,229.50 -
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 48,000 BTU 22 SEER2 (6K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,891.00Sale price $8,891.00 Regular price$11,113.75You Save: $2,222.75Unit price per✅ In StockShop NowSave $2,222.75
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.