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MRCOOL DIY 5th Gen 4-Zone 27,000 BTU 23 SEER2 (9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $7,829.00Sale price $7,829.00 Regular price$9,786.25You Save: $1,957.25Unit price per✅ In StockShop NowSave $1,957.25 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 6K + 6K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $7,869.00Sale price $7,869.00 Regular price$9,836.25You Save: $1,967.25Unit price per✅ In StockShop NowSave $1,967.25 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 6K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $7,968.00Sale price $7,968.00 Regular price$9,960.00You Save: $1,992.00Unit price per✅ In StockShop NowSave $1,992.00 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 6K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $7,979.00Sale price $7,979.00 Regular price$9,973.75You Save: $1,994.75Unit price per✅ In StockShop NowSave $1,994.75 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 6K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $7,998.00Sale price $7,998.00 Regular price$9,997.50You Save: $1,999.50Unit price per✅ In StockShop NowSave $1,999.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,067.00Sale price $8,067.00 Regular price$10,083.75You Save: $2,016.75Unit price per✅ In StockShop NowSave $2,016.75 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,078.00Sale price $8,078.00 Regular price$10,097.50You Save: $2,019.50Unit price per✅ In StockShop NowSave $2,019.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 9K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,097.00Sale price $8,097.00 Regular price$10,121.25You Save: $2,024.25Unit price per✅ In StockShop NowSave $2,024.25 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,089.00Sale price $8,089.00 Regular price$10,111.25You Save: $2,022.25Unit price per✅ In StockShop NowSave $2,022.25 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,108.00Sale price $8,108.00 Regular price$10,135.00You Save: $2,027.00Unit price per✅ In StockShop NowSave $2,027.00 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 6K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,127.00Sale price $8,127.00 Regular price$10,158.75You Save: $2,031.75Unit price per✅ In StockShop NowSave $2,031.75 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,166.00Sale price $8,166.00 Regular price$10,207.50You Save: $2,041.50Unit price per✅ In StockShop NowSave $2,041.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,177.00Sale price $8,177.00 Regular price$10,221.25You Save: $2,044.25Unit price per✅ In StockShop NowSave $2,044.25 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,196.00Sale price $8,196.00 Regular price$10,245.00You Save: $2,049.00Unit price per✅ In StockShop NowSave $2,049.00 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 9K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,188.00Sale price $8,188.00 Regular price$10,235.00You Save: $2,047.00Unit price per✅ In StockShop NowSave $2,047.00 -
MRCOOL DIY 5th Gen 36 K BTU 4-Zone Ceiling Cassette Mini Split (6 K + 9 K + 12 K + 18 K)
Regular price $8,207.00Sale price $8,207.00 Regular price$10,258.75You Save: $2,051.75Unit price per✅ In StockShop NowSave $2,051.75 -
MRCOOL DIY 5th Gen 36 K BTU 4-Zone Ceiling Cassette Mini Split (6 K + 12 K + 12 K + 12 K)
Regular price $8,199.00Sale price $8,199.00 Regular price$10,248.75You Save: $2,049.75Unit price per✅ In StockShop NowSave $2,049.75 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER2 (6K + 12K + 12K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Regular price $8,218.00Sale price $8,218.00 Regular price$10,272.50You Save: $2,054.50Unit price per✅ In StockShop NowSave $2,054.50 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER (9K + 9K + 9K + 12K) Ductless Mini Split AC and Heat Pump with Ceiling Cassettes
Regular price $8,276.00Sale price $8,276.00 Regular price$10,345.00You Save: $2,069.00Unit price per✅ In StockShop NowSave $2,069.00 -
MRCOOL DIY 5th Gen 4-Zone 36,000 BTU 23 SEER (9K + 9K + 12K + 12K) Ductless Mini Split AC and Heat Pump with Ceiling Cassettes
Regular price $8,287.00Sale price $8,287.00 Regular price$10,358.75You Save: $2,071.75Unit price per✅ In StockShop NowSave $2,071.75
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.