The MRCOOL® DIY® 5th Gen Multi-Zone 27,000 BTU Ductless Mini Split is designed to provide independent heating and cooling across three separate rooms with three 9,000 BTU wall-mounted air handlers. This balanced configuration delivers targeted comfort while allowing each zone to be controlled independently from a single outdoor condenser.
Each 9,000 BTU air handler can condition approximately 350 square feet, making this system well suited for bedrooms, offices, living areas, additions, and other medium-sized spaces. The 27,000 BTU outdoor condenser supplies all three indoor units through one multi-zone heat pump system.
With a 23 SEER2 rating, DC inverter technology, R-454B refrigerant, smartphone app controls, Follow Me® functionality, low ambient cooling, and pre-charged Quick Connect® line set technology, the system combines efficient performance with a simplified DIY installation approach.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 27,000 BTU Mini Split Condenser, DIY-MULTI4-27HP230D-O — Quantity: 1 -
MRCOOL DIY 5th Gen 9,000 BTU Wall Mount Air Handler, DIY-09-HP-WMAH-230D25-O — Quantity: 3 -
MRCOOL DIY 5th Gen R-454B Quick Connect Line Set — Choose line set length for each air handler
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 |
27,000 BTU |
SEER2 |
23 |
EER2 |
12 |
HSPF2-4 |
9.5 |
HSPF2-5 |
7 |
COOLING CAPACITY |
26,000 BTU |
HEATING CAPACITY |
26,000 BTU |
TONNAGE |
2.25 Tons |
AIR HANDLER CONFIGURATION |
9,000 BTU + 9,000 BTU + 9,000 BTU |
AIR HANDLER COVERAGE |
Up to 350 sq. ft. each |
TOTAL COVERAGE |
Up to 1,050 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. |
MAX FUSE BREAKER |
25A |
MIN CIRCUIT AMPACITY |
23A |
CONDENSER NOISE |
61 dBA |
CONDENSER MODEL |
DIY-MULTI4-27HP230D-O |
AIR HANDLER MODEL |
DIY-09-HP-WMAH-230D25-O × 3 |
AIR HANDLER MOUNT TYPE |
Wall Mount |
AIR HANDLER FILTER |
Reusable |
WI-FI 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 |
CERTIFICATIONS |
UL, ETL, ENERGY STAR®, AHRI |
BASE PARTS WARRANTY |
5 Years |
BASE COMPRESSOR WARRANTY |
7 Years |
SKU |
DIYM327HPW05D |
GTIN |
840255587457 |
UPC |
840255587457 |

















