The MRCOOL® DIY® 5th Generation Multi-Zone 55,000 BTU 2-Zone Ductless Mini-Split System provides efficient heating and cooling for two separate indoor spaces with a 12,000 BTU and 24,000 BTU wall-mounted air handler configuration. With up to 22 SEER2 efficiency, DC inverter technology, and a high-capacity outdoor condenser, this system is designed to deliver dependable year-round comfort with efficient performance.
Designed for convenient DIY installation, the system features MRCOOL® DIYPro® technology and pre-charged Quick Connect® line sets that simplify installation while eliminating the need for traditional vacuuming and refrigerant charging procedures. Each indoor unit can provide independent comfort control, while Wi-Fi connectivity and the Smart HVAC App allow users to manage settings, schedules, and operating modes from a smartphone.
The system uses R-454B refrigerant and includes features such as Follow Me®, Low Ambient Cooling, Quiet Mode, Auto Cool, reusable filters, and DC inverter technology. With ENERGY STAR® and AHRI certification, a 5-year parts warranty, a 7-year compressor warranty, and an Extended Limited Lifetime Replacement warranty when registered through the MRCOOL® Care Program, this system is designed for reliable long-term residential comfort.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 55,000 BTU Mini Split Condenser, DIY-MULTI6-55HP230D-O -
MRCOOL DIY 5th Gen 12,000 BTU Wall Mount Air Handler, DIY-12-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-12-HP-WMAH-230D25-O / DIY-24-HP-WMAH-230D25-O |
EQUIPMENT TYPE |
Multi-Zone Ductless Mini-Split Heat Pump System |
ZONE CAPACITY |
2 |
TONNAGE |
4.6 |
COOLING CAPACITY (BTU) |
47,000 |
HEATING CAPACITY (BTU) |
55,000 |
SEER2 |
22 |
EER2 |
12 |
HSPF2-4 |
10.6 |
HSPF2-5 |
8.5 |
VOLTAGE / PHASE / FREQUENCY |
208/230 V / 1 / 60 Hz |
MAX FUSE / BREAKER (A) |
45 |
MIN CIRCUIT AMPACITY (A) |
43 |
REFRIGERANT |
R-454B |
REFRIGERANT VOLUME (OZ) |
151.68 |
COMPRESSOR MOTOR TYPE |
Rotary |
INVERTER |
DC |
DECIBEL RATING (DBA) |
64 |
LINE SET LENGTH |
25 ft |
MAX LINESET LENGTH (FT) |
221.4 ft |
LIQUID LINE SIZE |
1/4 in |
SUCTION LINE SIZE |
3/8 in x 4 / 1/2 in x 2 |
AUXILIARY HEATER |
Not Included / Not Available |
FAN ONLY OPTION |
Yes |
QUIET MODE |
Yes |
AUTO COOL |
Yes |
WIFI COMPATIBILITY |
Yes |
APP COMPATIBILITY |
Yes |
IOS / ANDROID COMPATIBILITY |
Yes / Yes |
REMOTE CONTROL INCLUDED |
Yes |
MOUNT TYPE |
Wall |
MAX COVERAGE AREA |
550 sqft / 1,050 sqft |
FILTER TYPE |
Reusable |
COLOR |
White |
UL LISTED |
Yes |
ETL LISTED |
Yes |
ENERGY STAR CERTIFIED |
Yes |
AHRI CERTIFIED |
Yes |
WARRANTY |
5 years parts / 7 years compressor / Extended Limited Lifetime* |
CONDENSER NET DIMENSIONS (W X D X H) |
37.48 x 16.34 x 52.48 in |
CONDENSER NET WEIGHT |
245.81 lb |
AIR HANDLER CONFIGURATION |
12,000 BTU + 24,000 BTU |
AIR HANDLER NET DIMENSIONS (W X D X H) |
31.57 x 7.44 x 11.63 in / 42.52 x 8.90 x 13.19 in |
AIR HANDLER NET WEIGHT |
24.47 / 35.93 lb |
















