The MRCOOL® DIY® 5th Gen Multi-Zone 55,000 BTU Ductless Mini-Split System provides powerful heating and cooling for two separate spaces with an 18,000 BTU and 36,000 BTU indoor unit configuration. With 22 SEER2 efficiency and advanced DC inverter technology, the system continuously adjusts operation to deliver dependable comfort while helping improve energy efficiency.
Designed for simplified DIY installation, this multi-zone system uses MRCOOL® Quick Connect® pre-charged line sets to reduce the complexity traditionally associated with mini-split installation. The 55,000 BTU condenser supports multiple zones, while the 18K and 36K wall-mounted air handlers provide flexible temperature control for rooms with different comfort requirements.
Advanced features include R-454B refrigerant, Gold Fin® condenser protection, Follow Me® temperature sensing, low ambient cooling, quiet operation, and smartphone control through the Smart HVAC app. Google Assistant and Amazon Alexa compatibility provide additional convenience, while ENERGY STAR® and AHRI certifications help support efficient and reliable operation.
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 36,000 BTU Wall Mount Air Handler, DIY-36-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-36-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 + 36,000 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 + 36,000 BTU |
AIR HANDLER TONNAGE |
1.5 ton + 3 ton |
AIR HANDLER MAX COVERAGE AREA |
800 sqft + 1,550 sqft |
AIR HANDLER SOUND LEVEL (DBA) |
19 - 54.5 / 27.5 - 55.5 |
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 each |
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 / 49.57 x 11.1 x 14.25 in |
CONDENSER NET WEIGHT |
245.81 lb |
AIR HANDLER NET WEIGHT |
35.49 lb / 48.72 lb |