The MRCOOL® DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini Split provides efficient heating and cooling for three separate zones with a flexible 9,000 + 9,000 + 36,000 BTU configuration. Two compact wall-mounted air handlers are designed for smaller rooms, while the larger 36,000 BTU unit provides powerful comfort for a significantly larger space.
With independent zone control, each indoor unit can deliver customized comfort where it is needed. The two 9,000 BTU air handlers are rated for spaces up to approximately 400 square feet each, while the 36,000 BTU air handler is designed to cover up to approximately 1,550 square feet.
Powered by DC inverter technology and rated up to 22 SEER2, this system combines energy-efficient performance with modern smart-home convenience. The pre-charged Quick Connect® system simplifies installation, while R-454B refrigerant, Wi-Fi connectivity, smartphone controls, and Follow Me® functionality make everyday operation simple and convenient.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Mini Split Condenser, DIY-MULTI6-55HP230D-O
Quantity: 1 -
MRCOOL DIY 5th Gen 9,000 BTU Wall Mount Air Handler, DIY-09-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
Key Features:
- Easy DIY® Installation
- Pre-Charged DIY® System
- Quick Connect® Line Set Technology
- Three-Zone Independent Comfort
- Energy-Efficient DC Inverter Technology
- 100% Sealed System
- Gold Fin® Condenser
- Eco-Safe R-454B Refrigerant
- Smartphone App Controls
- Follow Me® Temperature Sensing
- Low Ambient Cooling
- Wi-Fi Connectivity
- Compatible with iOS and Android
- Google Assistant & Amazon Alexa Compatibility
- Lifetime Technical Support
Specifications:
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th gen Multi-Zone Mini-splits |
MODEL |
DIY-MULTI6-55HP230D-O |
SKU |
DIYM355HPW09D |
GTIN |
840255587488 |
UPC |
840255587488 |
EQUIPMENT TYPE |
Ductless Mini Split Heat Pump |
ZONE CONFIGURATION |
3-Zone |
CONDENSER CAPACITY |
55,000 BTU |
SEER2 |
22 |
EER2 |
12 |
HSPF2-4 |
10.6 |
HSPF2-5 |
8.5 |
TONNAGE |
4.6 Ton |
COOLING CAPACITY |
47,000 BTU |
HEATING CAPACITY |
55,000 BTU |
AIR HANDLER CONFIGURATION |
9,000 BTU + 9,000 BTU + 36,000 BTU |
9K AIR HANDLER QUANTITY |
2 |
36K AIR HANDLER QUANTITY |
1 |
9K MAX COVERAGE AREA |
400 sq. ft. each |
36K MAX COVERAGE AREA |
1,550 sq. ft. |
VOLTAGE |
208/230V |
PHASE |
1 |
CYCLE |
60 Hz |
MAX FUSE BREAKER |
45A |
MIN CIRCUIT AMPACITY |
43A |
COLOR |
White |
ZONE CAPACITY |
6 |
REFRIGERANT TYPE |
R-454B |
REFRIGERANT VOLUME |
151.68 oz. |
DECIBEL RATING |
64 dBA |
INVERTER |
DC |
LINE SET LENGTH |
25 ft. |
MAX LINE SET LENGTH |
221.4 ft. |
LIQUID LINE SIZE |
1/4 in. |
SUCTION LINE SIZE |
3/8 in. × 4; 1/2 in. × 2 |
COMPRESSOR MOTOR TYPE |
Rotary |
AUXILIARY HEATER INCLUDED |
No |
FAN ONLY OPTION |
Yes |
QUIET MODE |
Yes |
AUTO COOL |
Yes |
WIFI COMPATIBILITY |
Yes |
APP COMPATIBILITY |
Yes |
IOS COMPATIBILITY |
Yes |
ANDROID COMPATIBILITY |
Yes |
CERTIFICATIONS |
UL, ETL, ENERGY STAR®, AHRI |
BASE PARTS WARRANTY |
5 Years |
BASE COMPRESSOR WARRANTY |
7 Years |
REGISTERED WARRANTY |
Extended Limited Lifetime* |
9K AIR HANDLER MODEL |
DIY-09-HP-WMAH-230D25-O |
9K AIR HANDLER QUANTITY |
2 |
9K AIR HANDLER COVERAGE |
400 sq. ft. each |
9K AIR HANDLER MOUNT TYPE |
Wall |
9K AIR HANDLER COLOR |
White |
9K AIR HANDLER FILTER |
Reusable |
9K AIR HANDLER OSCILLATION |
Yes |
9K AIR HANDLER WIFI |
Yes |
9K REMOTE CONTROL |
Included |
9K AIR HANDLER WARRANTY |
5 Year Parts / 7 Year Compressor |
36K AIR HANDLER MODEL |
DIY-36-HP-WMAH-230D25-O |
36K AIR HANDLER QUANTITY |
1 |
36K AIR HANDLER COVERAGE |
1,550 sq. ft. |
36K AIR HANDLER MOUNT TYPE |
Wall |
36K AIR HANDLER COLOR |
White |
36K AIR HANDLER FILTER |
Reusable |
36K AIR HANDLER NOISE |
27.5-55.5 dBA |
36K AIR HANDLER FAN SPEEDS |
5 |
36K AIR HANDLER LIQUID LINE |
3/8 in. |
36K AIR HANDLER SUCTION LINE |
5/8 in. |
36K AIR HANDLER WIFI |
Yes |
36K REMOTE CONTROL |
Included |
36K AIR HANDLER WARRANTY |
5 Year Parts / 7 Year Compressor |

















