The MRCOOL® DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini-Split System delivers powerful heating and cooling for two separate indoor spaces with an 18,000 BTU + 18,000 BTU configuration. With up to 22 SEER2 efficiency and DC inverter technology, the system continuously adjusts its output to provide dependable comfort while helping reduce energy consumption.
Designed with MRCOOL® DIY® installation technology, the system uses pre-charged Quick Connect® line sets to simplify installation without traditional evacuation and refrigerant charging procedures. The multi-zone design allows each connected room to receive independent temperature control, making it a practical solution for homes and spaces that require flexible comfort across multiple areas.
The 5th Gen system features R-454B refrigerant, Gold Fin® condenser protection, Follow Me® temperature sensing, low ambient cooling, quiet operation, and smartphone app control with compatibility for Google Assistant and Amazon Alexa. With a 5-year parts warranty, 7-year compressor warranty, and extended limited lifetime replacement warranty when registered, this system is designed for long-term performance and convenience.
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
Specifications:
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th Gen Multi-Zone Mini-Splits |
MODEL |
DIY-MULTI6-55HP230D-O / DIY-18-HP-WMAH-230D25-O |
EQUIPMENT TYPE |
Multi-Zone DC Inverter Mini-Split Condenser / Wall-Mounted Air Handler |
SYSTEM CAPACITY |
55,000 BTU |
INDOOR CONFIGURATION |
18,000 BTU + 18,000 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 |
MOUNT TYPE |
Wall |
AIR HANDLER CAPACITY |
18,000 BTU x 2 |
AIR HANDLER TONNAGE |
1.5 ton x 2 |
AIR HANDLER MAX COVERAGE AREA |
800 sqft each |
AIR HANDLER SOUND LEVEL (DBA) |
19 - 54.5 |
AIR HANDLER MOUNT TYPE |
Wall |
AIR HANDLER LINE SIZE |
1/4 in / 1/2 in |
AIR HANDLER FILTER TYPE |
Reusable |
AIR HANDLER WIFI / APP COMPATIBILITY |
Yes |
REMOTE CONTROL INCLUDED |
Yes |
FAN ONLY OPTION |
Yes |
QUIET MODE |
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* |
NET DIMENSIONS (W X D X H) |
37.48 x 16.34 x 52.48 in / 42.52 x 8.9 x 13.19 in |
NET WEIGHT |
245.81 lb / 35.49 lb each |