The MRCOOL® DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split provides efficient heating and cooling across three separate areas. This configuration combines a 55,000 BTU outdoor condenser with two 6,000 BTU wall-mounted air handlers and one 36,000 BTU air handler for flexible multi-room comfort.
The two 6,000 BTU air handlers are designed for spaces up to approximately 200 square feet each, while the 36,000 BTU air handler can provide comfort for areas up to approximately 1,550 square feet. Each indoor unit can operate independently, giving you greater control over comfort in each zone.
With 22 SEER2 efficiency, DC inverter technology, R-454B refrigerant, smartphone app controls, Follow Me® functionality, and pre-charged Quick Connect® technology, this system delivers convenient year-round comfort with a DIY-friendly installation design.
What's Included
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MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Mini Split Condenser, DIY-MULTI6-55HP230D-O
Quantity: 1 -
MRCOOL DIY 5th Gen 6,000 BTU Wall Mount Air Handler, DIY-06-HP-WMAH-230D25-O
Quantity: 2 -
MRCOOL DIY 5th Gen 36,000 BTU Wall Mount Air Handler, DIY-36-HP-WMAH-230D25-O
Quantity: 1
Specifications:
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th gen Multi-Zone Mini-splits |
MODEL |
DIY-MULTI6-55HP230D-O |
EQUIPMENT TYPE |
Ductless Mini Split Heat Pump |
ZONE CONFIGURATION |
3-Zone |
CONDENSER CAPACITY |
55,000 BTU |
SEER2 |
22 |
EER2 |
12 |
HSPF2-4 |
10.6 |
HSPF2-5 |
8.5 |
TONNAGE |
4.6 Ton |
COOLING CAPACITY |
47,000 BTU |
HEATING CAPACITY |
55,000 BTU |
AIR HANDLER CONFIGURATION |
6,000 BTU + 6,000 BTU + 36,000 BTU |
6K AIR HANDLER COVERAGE |
Up to 200 sq. ft. each |
36K AIR HANDLER COVERAGE |
Up to 1,550 sq. ft. |
VOLTAGE |
208/230V |
PHASE |
1 |
CYCLE |
60 Hz |
REFRIGERANT |
R-454B |
INVERTER |
DC Inverter |
LINE SET |
Pre-Charged Quick Connect® |
MAX LINE SET LENGTH |
221.4 ft. |
LIQUID LINE SIZE |
1/4 in. |
SUCTION LINE SIZE |
3/8 in. × 4; 1/2 in. × 2 |
MAX FUSE BREAKER |
45A |
MIN CIRCUIT AMPACITY |
43A |
CONDENSER NOISE |
64 dBA |
6K AIR HANDLER MODEL |
DIY-06-HP-WMAH-230D25-O |
36K AIR HANDLER MODEL |
DIY-36-HP-WMAH-230D25-O |
AIR HANDLER MOUNT TYPE |
Wall Mount |
AIR HANDLER FILTER |
Reusable |
WIFI COMPATIBILITY |
Yes |
APP COMPATIBILITY |
Yes |
IOS COMPATIBILITY |
Yes |
ANDROID COMPATIBILITY |
Yes |
FAN ONLY OPTION |
Yes |
QUIET MODE |
Yes |
AUTO COOL |
Yes |
LOW AMBIENT COOLING |
Yes |
COMPRESSOR MOTOR TYPE |
Rotary |
AUXILIARY HEATER |
No |
CERTIFICATIONS |
UL, ETL, ENERGY STAR®, AHRI |
BASE PARTS WARRANTY |
5 Years |
BASE COMPRESSOR WARRANTY |
7 Years |
SKU |
DIYM355HPW00D |
CONDENSER GTIN |
840255587488 |
UPC |
840255587488 |


















