The MRCOOL® DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini-Split System delivers powerful heating and cooling across two independently controlled zones with an 18,000 BTU and 24,000 BTU indoor unit configuration. With up to 22 SEER2 efficiency and DC inverter technology, the system is designed to provide consistent comfort while adapting its output to changing indoor conditions.
Built around MRCOOL® DIY® installation technology, this multi-zone system uses pre-charged Quick Connect® line sets to simplify installation by eliminating traditional evacuation and refrigerant charging steps. The 55,000 BTU condenser can support multiple indoor zones, while the included 18K and 24K wall-mounted air handlers provide targeted temperature control for different rooms and living spaces.
The system features R-454B refrigerant, Gold Fin® condenser protection, Follow Me® temperature sensing, low ambient cooling, quiet operation, and Wi-Fi-enabled smartphone control. Compatibility with Amazon Alexa and Google Assistant adds convenient voice control, while ENERGY STAR® and AHRI certifications support its efficient and dependable performance.
What's Included
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MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Mini Split Condenser, DIY-MULTI6-55HP230D-O -
MRCOOL DIY 5th Gen 18,000 BTU Wall Mount Air Handler, DIY-18-HP-WMAH-230D25-O -
MRCOOL DIY 5th Gen 24,000 BTU Wall Mount Air Handler, DIY-24-HP-WMAH-230D25-O
Specifications:
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th Gen Multi-Zone Mini-Splits |
MODEL |
DIY-MULTI6-55HP230D-O / DIY-18-HP-WMAH-230D25-O / DIY-24-HP-WMAH-230D25-O |
EQUIPMENT TYPE |
Multi-Zone DC Inverter Mini-Split Condenser / Wall-Mounted Air Handlers |
SYSTEM CAPACITY |
55,000 BTU |
INDOOR CONFIGURATION |
18,000 BTU + 24,000 BTU |
TONNAGE |
4.6 |
SEER2 |
22 |
EER2 |
12 |
HSPF2-4 |
10.6 |
HSPF2-5 |
8.5 |
COOLING CAPACITY (BTU/H) |
47,000 |
HEATING CAPACITY (BTU/H) |
55,000 |
VOLTAGE / PHASE / FREQUENCY |
208/230 V / 1 / 60 Hz |
MIN CIRCUIT AMPACITY (A) |
43 |
MAX FUSE / BREAKER (A) |
45 |
REFRIGERANT |
R-454B |
REFRIGERANT VOLUME (OZ) |
151.68 |
COMPRESSOR MOTOR TYPE |
Rotary |
INVERTER |
DC |
ZONE CAPACITY |
6 |
OUTDOOR SOUND LEVEL (DBA) |
64 |
LINE SET LENGTH |
25 ft |
MAX LINE SET LENGTH |
221.4 ft |
LIQUID LINE SIZE |
1/4 in |
SUCTION LINE SIZE |
3/8 x 4 / 1/2 x 2 |
COLOR |
White |
MOUNT TYPE |
Wall |
AIR HANDLER CAPACITY |
18,000 BTU + 24,000 BTU |
AIR HANDLER TONNAGE |
1.5 ton + 2 ton |
AIR HANDLER MAX COVERAGE AREA |
800 sqft + 1,050 sqft |
AIR HANDLER SOUND LEVEL (DBA) |
19 - 54.5 / 20 - 54 |
AIR HANDLER LINE SIZE |
1/4 in / 1/2 in + 3/8 in / 5/8 in |
AIR HANDLER FILTER TYPE |
Reusable |
AIR HANDLER NUMBER OF SPEEDS |
5 |
AIR HANDLER OSCILLATION |
Yes |
WIFI COMPATIBILITY |
Yes |
APP COMPATIBILITY |
Yes |
REMOTE CONTROL INCLUDED |
Yes |
FAN ONLY OPTION |
Yes |
QUIET MODE |
Yes |
AUTO COOL |
Yes |
IOS / ANDROID COMPATIBILITY |
Yes |
ENERGY STAR CERTIFIED |
Yes |
AHRI CERTIFIED |
Yes |
UL / ETL LISTED |
Yes |
BASE PARTS WARRANTY |
5 years |
BASE COMPRESSOR WARRANTY |
7 years |
REGISTERED WARRANTY |
Extended Limited Lifetime* |
CONDENSER NET DIMENSIONS (W X D X H) |
37.48 x 16.34 x 52.48 in |
AIR HANDLER NET DIMENSIONS (W X D X H) |
42.52 x 8.9 x 13.19 in each |
CONDENSER NET WEIGHT |
245.81 lb |
AIR HANDLER NET WEIGHT |
35.49 lb / 35.93 lb |
















