The MRCOOL® DIY® 5th Generation Multi-Zone 36,000 BTU ductless mini-split system provides efficient year-round heating and cooling for two separate spaces. With a 23 SEER2 efficiency rating and a 9,000 BTU plus 18,000 BTU indoor unit configuration, this system delivers flexible multi-room comfort while allowing each zone to be controlled independently.
The system combines a 36,000 BTU multi-zone condenser with a 9,000 BTU wall-mounted air handler designed for spaces up to approximately 400 square feet and an 18,000 BTU wall-mounted air handler designed for areas up to approximately 800 square feet. MRCOOL® DIY® Quick Connect® pre-charged line sets simplify installation by eliminating the traditional evacuation and refrigerant charging process.
Built with DC inverter technology and R-454B refrigerant, the system offers efficient operation together with convenient smart-home controls. The MRCOOL® Smart HVAC Controller® App supports Wi-Fi control, Google Assistant, and Amazon Alexa, while features such as Follow Me®, Low Ambient Cooling, Quiet Mode, Auto Cool, reusable filters, and Gold Fin® condenser protection provide added comfort and convenience. The system is ENERGY STAR® and AHRI certified and includes a 5-year parts warranty and 7-year compressor warranty, with an Extended Limited Lifetime warranty available through the MRCOOL® Care Program.
What's Included
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MRCOOL DIY 5th Gen Multi-Zone 36,000 BTU Mini Split Condenser, DIY-MULTI5-36HP230D-O -
MRCOOL DIY 5th Gen 9,000 BTU Wall Mount Air Handler, DIY-09-HP-WMAH-230D25-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-MULTI5-36HP230D-O / DIY-09-HP-WMAH-230D25-O / DIY-18-HP-WMAH-230D25-O |
|
CONFIGURATION |
2-Zone (9K + 18K) |
|
TONNAGE |
3 |
|
COOLING CAPACITY (BTU) |
34,000 |
|
HEATING CAPACITY (BTU) |
36,000 |
|
SEER2 |
23 |
|
EER2 |
12 |
|
HSPF2-4 |
9.9 |
|
HSPF2-5 |
7.5 |
|
VOLTAGE / PHASE / FREQUENCY |
208/230 V / 1 / 60 Hz |
|
MIN CIRCUIT AMPACITY (A) |
30.5 |
|
MAX FUSE / BREAKER (A) |
35 |
|
COLOR |
White |
|
ZONE CAPACITY |
5 |
|
REFRIGERANT |
R-454B |
|
FACTORY REFRIGERANT CHARGE (OZ) |
104.75 |
|
OUTDOOR SOUND LEVEL (DBA) |
64 |
|
INVERTER |
DC |
|
LINE SET LENGTH |
25 ft |
|
MAX LINE SET LENGTH (FT) |
221.4 ft |
|
LIQUID LINE SIZE |
1/4 in |
|
SUCTION LINE SIZE |
3/8 in x 4 / 1/2 in x 1 |
|
COMPRESSOR MOTOR TYPE |
Rotary |
|
AUXILIARY HEATER |
Not Included / Not Available |
|
FAN ONLY OPTION |
Yes |
|
QUIET MODE |
Yes |
|
AUTO COOL |
Yes |
|
WI-FI / APP COMPATIBILITY |
Yes |
|
SMART HOME COMPATIBILITY |
Google Assistant / Amazon Alexa |
|
IOS / ANDROID COMPATIBILITY |
Yes / Yes |
|
CERTIFICATIONS |
UL / ETL / ENERGY STAR / AHRI |
|
BASE WARRANTY |
5-Year Parts / 7-Year Compressor |
|
REGISTERED WARRANTY |
Extended Limited Lifetime* |
|
CONDENSER DIMENSIONS (W X D X H) |
37.24 x 16.14 x 31.89 in |
|
CONDENSER NET / GROSS WEIGHT |
169.24 / 181.88 lb |
|
AIR HANDLER CONFIGURATION |
9,000 BTU + 18,000 BTU Wall-Mounted |
|
AIR HANDLER COVERAGE |
400 sq. ft. + 800 sq. ft. |
|
AIR HANDLER MOUNT TYPE |
Wall |
|
AIR HANDLER FILTER TYPE |
Reusable |
|
AIR HANDLER AUXILIARY HEATER |
Not Included / Not Available |
|
AIR HANDLER FEATURES |
Oscillation / Fan Only / Quiet Mode / Auto Cool / Wi-Fi / App / Remote |
|
9K AIR HANDLER DIMENSIONS (W X D X H) |
31.57 x 7.44 x 11.69 in |
|
18K AIR HANDLER DIMENSIONS (W X D X H) |
42.52 x 8.90 x 13.19 in |
|
AIR HANDLER NET / GROSS WEIGHT |
9K: 24.47 / 35.05 lb; 18K: 35.49 / 49.60 lb |


















