The MRCOOL® DIY® 5th Gen Multi-Zone 48,000 BTU Ductless Mini Split provides flexible heating and cooling for three separate spaces. This configuration pairs 9,000 BTU, 12,000 BTU, and 36,000 BTU wall-mounted air handlers with a 48,000 BTU outdoor condenser.
Each indoor unit can be controlled independently, making it easy to tailor comfort to different room sizes and usage needs. The 9,000 BTU air handler is suited for spaces up to approximately 400 square feet, the 12,000 BTU unit for up to approximately 600 square feet, and the 36,000 BTU unit for areas up to approximately 1,500 square feet.
With 21.8 SEER2 efficiency, DC inverter technology, R-454B refrigerant, smartphone app controls, Follow Me® functionality, and pre-charged Quick Connect® technology, this system delivers efficient year-round comfort while simplifying installation.
What's Included
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MRCOOL DIY 5th Gen Multi-Zone 48,000 BTU Mini Split Condenser, DIY-MULTI6-48HP230D-O
Quantity: 1 -
MRCOOL DIY 5th Gen 9,000 BTU Wall Mount Air Handler, DIY-09-HP-WMAH-230D25-O
Quantity: 1 -
MRCOOL DIY 5th Gen 12,000 BTU Wall Mount Air Handler, DIY-12-HP-WMAH-230D25-O
Quantity: 1 -
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 |
EQUIPMENT TYPE |
Ductless Mini Split Heat Pump |
ZONE CONFIGURATION |
3-Zone |
CONDENSER CAPACITY |
48,000 BTU |
SEER2 |
21.8 |
EER2 |
12 |
HSPF2-4 |
10 |
HSPF2-5 |
7.8 |
TONNAGE |
4 Ton |
COOLING CAPACITY |
43,000 BTU |
HEATING CAPACITY |
48,000 BTU |
AIR HANDLER CONFIGURATION |
9,000 BTU + 12,000 BTU + 36,000 BTU |
9K AIR HANDLER COVERAGE |
Up to 400 sq. ft. |
12K AIR HANDLER COVERAGE |
Up to 600 sq. ft. |
36K AIR HANDLER COVERAGE |
Up to 1,500 sq. ft. |
TOTAL SYSTEM COVERAGE |
Up to 2,500 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 |
40A |
CONDENSER NOISE |
64 dBA |
CONDENSER MODEL |
DIY-MULTI6-48HP230D-O |
9K AIR HANDLER MODEL |
DIY-09-HP-WMAH-230D25-O |
12K AIR HANDLER MODEL |
DIY-12-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 |
FOLLOW ME® FEATURE |
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 |
DIYM348HPW28D124 |
CONDENSER GTIN |
840255587471 |
UPC |
840255587471 |


















