The MRCOOL® DIY® 5th Gen Multi-Zone 48,000 BTU Ductless Mini Split is built to deliver dependable heating and cooling across three separate spaces. This configuration pairs two 12,000 BTU wall-mounted air handlers with one 36,000 BTU air handler and a 48,000 BTU outdoor condenser.
The two 12,000 BTU air handlers are designed for rooms up to approximately 550 square feet each, while the 36,000 BTU unit provides higher-capacity comfort for larger spaces. Each indoor unit can be controlled independently, giving you greater flexibility when conditioning multiple areas.
Featuring 21.8 SEER2 efficiency, DC inverter technology, R-454B refrigerant, smartphone app controls, Follow Me® functionality, and pre-charged Quick Connect® technology, this system provides efficient year-round comfort with a convenient DIY-friendly installation design.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 48,000 BTU Mini Split Condenser, DIY-MULTI6-48HP230D-O
Quantity: 1 -
MRCOOL DIY 5th Gen 12,000 BTU Wall Mount Air Handler, DIY-12-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 |
|
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 |
12,000 BTU + 12,000 BTU + 36,000 BTU |
|
12K AIR HANDLER COVERAGE |
Up to 550 sq. ft. each |
|
36K AIR HANDLER COVERAGE |
Up to 1,500 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 |
|
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 |
|
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 |
DIYM348HPW31D124 |
|
CONDENSER GTIN |
840255587471 |
|
UPC |
840255587471 |


















