The MRCOOL® DIY® 5th Gen Multi-Zone 48,000 BTU Ductless Mini Split provides flexible heating and cooling for three separate spaces. This configuration combines 6,000 BTU, 18,000 BTU, and 36,000 BTU wall-mounted air handlers with a powerful 48,000 BTU outdoor condenser.
With three different air handler capacities, this system is designed to accommodate rooms with varying comfort requirements. The 6,000 BTU unit is suited for spaces up to approximately 200 square feet, while the 18,000 BTU and 36,000 BTU units are designed for larger areas.
The system features 21.8 SEER2 efficiency, DC inverter technology, R-454B refrigerant, smartphone app controls, Follow Me® functionality, and pre-charged Quick Connect® technology for a streamlined DIY 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 6,000 BTU Wall Mount Air Handler, DIY-06-HP-WMAH-230D25-O
Quantity: 1 -
MRCOOL DIY 5th Gen 18,000 BTU Wall Mount Air Handler, DIY-18-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 |
6,000 BTU + 18,000 BTU + 36,000 BTU |
6K AIR HANDLER COVERAGE |
Up to 200 sq. ft. |
18K AIR HANDLER COVERAGE |
Up to 800 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 |
6K AIR HANDLER MODEL |
DIY-06-HP-WMAH-230D25-O |
18K AIR HANDLER MODEL |
DIY-18-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 |
DIYM348HPW24D124 |
CONDENSER GTIN |
840255587471 |
UPC |
840255587471 |

















