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Home Store MRCOOL Air Conditioner Heat Pump LIne Sets

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes

MRCOOL Air Conditioner Heat Pump LIne Sets

$3,730.80

Original: $12,436.00

-70%

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes—

$12,436.00

$3,730.80

Original: $12,436.00

-70%

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes—

$12,436.00

$3,730.80

The Story

MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner & Heat Pump with Ceiling Cassettes

Name: MRCOOL DIY 5th Gen Multi-Zone 6-Zone 55,000 BTU 22 SEER2 (9K + 9K + 12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes
Brand: MRCOOL Air Conditioner Heat Pump LIne Sets
SKU: diym655090912121212-cc
Availability: OutOfStock

Experience total home comfort with the MRCOOL DIY 5th Gen 55,000 BTU 6-Zone Ductless Mini-Split System — the ultimate DIY climate solution for large homes, shops, and offices. This complete setup pairs a powerful 55K BTU condenser with six low-profile ceiling cassette air handlers (9K + 9K + 12K + 12K + 12K + 12K), delivering efficient zoned heating and cooling with no professional installation required.

With Quick-Connect® pre-charged line sets, advanced Wi-Fi control, and an industry-leading 22 SEER2 efficiency rating, this MRCOOL system offers premium performance, whisper-quiet operation, and smart home integration through Alexa or Google Assistant.

Key Features & Benefits

✔ 6-Zone configuration: (9K + 9K + 12K + 12K + 12K + 12K) ceiling cassette air handlers.
✔ 22 SEER2 / 10.6 HSPF2-4 energy efficiency for reduced power costs.
✔ Heats to −13°F and cools to 122°F for true four-season comfort.
✔ Quick-Connect® pre-charged R-454B line sets — no vacuuming or refrigerant handling required.
✔ Ceiling cassette design blends seamlessly into ceilings for a low-profile look.
✔ Wi-Fi, Alexa, and Google Assistant control via MRCOOL SmartHVAC App.
✔ DIYPro® cable included — eliminates electrical conduit needs for faster installation.
✔ Gold Fin® anti-corrosion coating protects against outdoor elements.
✔ Follow Me® remote sensor maintains the perfect temperature near you.
✔ Energy Star, AHRI, and ETL Certified — proven efficiency and safety.

💡 Pro Tip: Each MRCOOL DIY ceiling cassette includes the WMK-19 Smart HVAC Wi-Fi Controller. Simply plug it into the air handler for instant app access via MRCOOL or SmartHVAC. Schedule temperature changes, monitor performance, and control your system hands-free with Alexa or Google Assistant.

Technical Specifications

Brand / Series: MRCOOL DIY 5th Gen Multi-Zone Mini-Split
Outdoor Model: DIY-MULTI6-55HP230D-O
Indoor Models: Ceiling Cassettes (9K + 9K + 12K + 12K + 12K + 12K)
Total Capacity: 55,000 BTU Heating / 47,000 BTU Cooling
Zones: 6
Refrigerant: R-454B (Pre-Charged Quick-Connect)
Efficiency: SEER2 22 | EER2 12 | HSPF2-4 10.6 | HSPF2-5 8.5
Voltage: 208/230V, 1 Phase, 60 Hz
Operating Range: Heat down to −13°F | Cool up to 122°F
Sound Level: 64 dBA (Outdoor Unit)
Compressor: DC Inverter Rotary
Max Line Set Length: 221.4 ft total combined
Certifications: Energy Star, AHRI, ETL, UL, Intertek 5031495
Warranty: 5-Year Parts | 7-Year Compressor | Limited Lifetime with MRCOOL Care registration

Buy from MRCOOL DIY Direct — the USA’s trusted source for genuine MRCOOL systems.
Get fast nationwide delivery, factory-backed warranty, and friendly DIY support from HVAC experts.