The MRCOOL® DIY® 5th Generation Multi-Zone 27,000 BTU ductless mini-split system provides efficient heating and cooling for two separate zones with a 9,000 BTU and 18,000 BTU wall-mounted air handler configuration. With up to 23 SEER2 efficiency and DC inverter technology, this system is designed to provide dependable year-round comfort while allowing independent temperature control for each room.
The system combines a 27,000 BTU multi-zone condenser with two wall-mounted air handlers designed to cover approximately 400 and 800 square feet. MRCOOL® DIY® technology uses pre-charged Quick Connect® line sets to simplify installation, while the sealed refrigerant system eliminates the need for specialized HVAC tools or extensive installation training.
Smart control features include the MRCOOL® Smart HVAC Controller® and smartphone app, with compatibility with Amazon Alexa and Google Assistant. Additional features include Follow Me®, low ambient cooling, quiet operation, Gold Fin® condenser protection, reusable filters, and environmentally conscious R-454B refrigerant. The system includes a 5-year parts warranty and 7-year compressor warranty, with extended limited lifetime replacement coverage available through the MRCOOL® Care Program.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 27,000 BTU Mini Split Condenser, DIY-MULTI4-27HP230D-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-MULTI4-27HP230D-O / DIY-09-HP-WMAH-230D25-O / DIY-18-HP-WMAH-230D25-O |
|
SKU |
DIYM227HPW03D |
|
GTIN / UPC |
840255587457 / 840255587020 / 840255587044 |
|
EQUIPMENT TYPE |
Multi-Zone Ductless Mini-Split Heat Pump |
|
CONFIGURATION |
2-Zone (9K + 18K) |
|
TONNAGE |
2.25 |
|
COOLING CAPACITY (BTU/H) |
26,000 |
|
HEATING CAPACITY (BTU/H) |
26,000 |
|
SEER2 |
23 |
|
EER2 |
12 |
|
HSPF2 |
9.5 (HSPF2-4) / 7 (HSPF2-5) |
|
VOLTAGE / PHASE / FREQUENCY |
208/230 V / 1 / 60 Hz |
|
MIN CIRCUIT AMPACITY (A) |
23 |
|
MAX FUSE / BREAKER (A) |
25 |
|
COLOR |
White |
|
ZONE CAPACITY |
4 |
|
REFRIGERANT |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
84.66 |
|
DECIBEL RATING (DBA) |
61 condenser / 19-54.5 air handlers |
|
INVERTER |
DC |
|
LINE SET LENGTH (FT) |
25 |
|
MAX LINE SET LENGTH (FT) |
221.4 |
|
LIQUID LINE SIZE |
1/4 in |
|
SUCTION LINE SIZE |
3/8 in condenser / 1/2 in 18K air handler |
|
COMPRESSOR MOTOR TYPE |
Rotary |
|
AUXILIARY HEATER INCLUDED / AVAILABLE |
No / No |
|
FAN ONLY OPTION |
Yes |
|
QUIET MODE |
Yes |
|
AUTO COOL |
Yes |
|
WIFI / APP COMPATIBILITY |
Yes |
|
WORKS WITH IOS / ANDROID |
Yes |
|
REMOTE CONTROL INCLUDED |
Yes |
|
CERTIFICATIONS |
UL / ETL / ENERGY STAR / AHRI |
|
WARRANTY |
5-year Parts / 7-year Compressor / Extended Limited Lifetime* |
|
CONDENSER DIMENSIONS (D X H X W) |
16.14 x 31.89 x 37.24 in |
|
CONDENSER NET / GROSS WEIGHT |
140.21 / 151.02 lb |
|
AIR HANDLER MODELS |
DIY-09-HP-WMAH-230D25-O / DIY-18-HP-WMAH-230D25-O |
|
AIR HANDLER VOLTAGE / PHASE / FREQUENCY |
208/230 V / 1 / 60 Hz |
|
AIR HANDLER MOUNT TYPE |
Wall |
|
AIR HANDLER CAPACITY |
9,000 / 18,000 BTU |
|
MAX COVERAGE AREA |
400 / 800 sqft |
|
AIR HANDLER COLOR |
White |
|
AIR HANDLER SOUND LEVEL (DBA) |
19-54.5 |
|
AIR HANDLER FAN SPEEDS |
5 |
|
AIR HANDLER OSCILLATION |
Yes |
|
AIR HANDLER FILTER TYPE |
Reusable |
|
AIR HANDLER AUXILIARY HEATER INCLUDED / AVAILABLE |
No / No |
|
AIR HANDLER FEATURES |
Fan Only, Quiet Mode, Auto Cool, WiFi, App, iOS, Android |
|
REMOTE CONTROL INCLUDED |
Yes |
|
AIR HANDLER CERTIFICATIONS |
UL / ETL / ENERGY STAR / AHRI |
|
AIR HANDLER WARRANTY |
5-year Parts / 7-year Compressor |
|
AIR HANDLER NET DIMENSIONS (D X H X W) |
7.44 x 11.69 x 31.57 in / 8.90 x 13.19 x 42.52 in |
|
AIR HANDLER NET / GROSS WEIGHT |
24.47 / 35.05 lb / 35.49 / 49.60 lb |


















