The MRCOOL® DIY® 5th Gen Multi-Zone 48,000 BTU Ductless Mini Split is built to provide independent heating and cooling across three separate rooms. This configuration pairs three 9,000 BTU wall-mounted air handlers with a single 48,000 BTU outdoor condenser, creating a balanced multi-room comfort solution.
Each 9,000 BTU air handler is designed for spaces up to approximately 400 square feet, making this configuration well suited for bedrooms, offices, living areas, and other similarly sized rooms. The three-zone design allows each space to receive dedicated temperature control.
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: 3
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 + 9,000 BTU + 9,000 BTU |
9K AIR HANDLER COVERAGE |
Up to 400 sq. ft. |
TOTAL SYSTEM COVERAGE |
Up to 1,200 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. × 6 |
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 |
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 |
DIYM348HPW25D124 |
CONDENSER GTIN |
840255587471 |
UPC |
840255587471 |


















