The MRCOOL® DIY® 5th Generation Multi-Zone 18,000 BTU system delivers efficient heating and cooling for two separate indoor spaces with a 6,000 BTU and 18,000 BTU configuration. With a 23.9 SEER2 rating and DC inverter technology, this system provides dependable year-round comfort while helping maintain efficient energy use.
Designed for convenient DIY installation, the system uses MRCOOL® pre-charged Quick Connect® line sets and a DIYPRO® cable to simplify installation without requiring traditional electrical conduit. The 6,000 BTU air handler is designed for spaces up to approximately 200 square feet, while the 18,000 BTU air handler can provide comfort for areas up to approximately 800 square feet.
The system features eco-friendly R-454B refrigerant, a Gold Fin® condenser, Follow Me® temperature sensing, low ambient cooling, and smartphone controls with Google Assistant and Amazon Alexa compatibility. The 18,000 BTU condenser can support up to three indoor air handlers, providing flexibility for future expansion. It includes a 5-year parts warranty and 7-year compressor warranty, with Extended Limited Lifetime warranty coverage available through the MRCOOL® Care Program.
What's Included
-
MRCOOL DIY 5th Gen Multi-Zone 18,000 BTU Mini Split Condenser, DIY-MULTI3-18HP230D-O -
MRCOOL DIY 5th Gen 6,000 BTU Wall Mount Air Handler, DIY-06-HP-WMAH-230D25-O -
MRCOOL DIY 5th Gen 18,000 BTU Wall Mount Air Handler, DIY-18-HP-WMAH-230D25-O -
MRCOOL Lineset for DIY 5th Gen Mini Split Systems - R-454B
Specifications:
|
BRAND NAME |
MRCOOL |
|
SERIES |
DIY 5th gen Multi-Zone Mini-splits |
|
MODEL |
DIYM218HPW06D24 |
|
CONDENSER MODEL |
DIY-MULTI3-18HP230D-O |
|
6K AIR HANDLER MODEL |
DIY-06-HP-WMAH-230D25-O |
|
18K AIR HANDLER MODEL |
DIY-18-HP-WMAH-230D25-O |
|
GTIN |
840255587617 |
|
UPC |
840255587617 |
|
EQUIPMENT TYPE |
Multi-Zone Ductless Mini-Split Heat Pump |
|
TONNAGE |
1.5 |
|
COOLING CAPACITY (BTU) |
18,000 |
|
HEATING CAPACITY (BTU) |
18,000 |
|
SEER2 |
23.9 |
|
EER2 |
13 |
|
HSPF2-4 |
10 |
|
HSPF2-5 |
7.8 |
|
VOLTAGE |
208/230 V |
|
PHASE |
1 |
|
CYCLE |
60 Hz |
|
MAX FUSE / BREAKER (A) |
20 |
|
MIN CIRCUIT AMPACITY (A) |
16 |
|
COLOR |
White |
|
ZONE CAPACITY |
3 |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
61.73 |
|
DECIBEL RATING (DBA) |
60 |
|
INVERTER |
DC |
|
LINE SET LENGTH |
25 ft |
|
MAX LINESET LENGTH (FT) |
172.2 ft |
|
LIQUID LINE SIZE |
1/4 in |
|
SUCTION LINE SIZE |
3/8 in / 1/2 in |
|
COMPRESSOR MOTOR TYPE |
Rotary |
|
AUXILIARY HEATER INCLUDED |
No |
|
AUXILIARY HEATER AVAILABLE |
No |
|
FAN ONLY OPTION |
Yes |
|
QUIET MODE |
Yes |
|
AUTO COOL |
Yes |
|
WIFI COMPATIBILITY |
Yes |
|
APP COMPATIBILITY |
Yes |
|
WORKS WITH IOS |
Yes |
|
WORKS WITH ANDROID |
Yes |
|
UL LISTED |
Yes |
|
ETL LISTED |
Yes |
|
ENERGY STAR CERTIFIED |
Yes |
|
AHRI CERTIFIED |
Yes |
|
REGISTERED WARRANTY |
Extended Limited Lifetime* |
|
BASE PARTS WARRANTY |
5 years |
|
BASE COMPRESSOR WARRANTY |
7 years |
|
CONDENSER NET DIMENSIONS (D X H X W) |
13.46 x 26.5 x 35.04 in |
|
CONDENSER NET WEIGHT (LBS) |
101.63 |
|
CONDENSER GROSS DIMENSIONS (D X H X W) |
17.24 x 29.53 x 40.55 in |
|
CONDENSER GROSS WEIGHT (LBS) |
109.57 |
|
6K AIR HANDLER MODEL |
DIY-06-HP-WMAH-230D25-O |
|
6K AIR HANDLER VOLTAGE |
208/230 V |
|
6K AIR HANDLER PHASE |
1 |
|
6K AIR HANDLER CYCLE |
60 Hz |
|
6K MOUNT TYPE |
Wall |
|
6K COLOR |
White |
|
6K MAX COVERAGE AREA |
200 sqft |
|
6K OSCILLATION |
Yes |
|
6K FILTER TYPE |
Reusable |
|
6K REMOTE CONTROL INCLUDED |
Yes |
|
6K NET DIMENSIONS (D X H X W) |
7.44 x 11.69 x 31.57 in |
|
6K NET WEIGHT (LBS) |
24.47 |
|
6K GROSS DIMENSIONS (D X H X W) |
16.34 x 14.37 x 36.02 in |
|
6K GROSS WEIGHT (LBS) |
35.05 |
|
18K AIR HANDLER MODEL |
DIY-18-HP-WMAH-230D25-O |
|
18K AIR HANDLER TONNAGE |
1.5 |
|
18K AIR HANDLER VOLTAGE |
208/230 V |
|
18K AIR HANDLER PHASE |
1 |
|
18K AIR HANDLER CYCLE |
60 Hz |
|
18K AIR HANDLER MAX FUSE / BREAKER (A) |
15 |
|
18K AIR HANDLER MIN CIRCUIT AMPACITY (A) |
3 |
|
18K MOUNT TYPE |
Wall |
|
18K COLOR |
White |
|
18K MAX COVERAGE AREA |
800 sqft |
|
18K SOUND LEVEL (DBA) |
19 - 54.5 |
|
18K NUMBER OF SPEEDS |
5 |
|
18K OSCILLATION |
Yes |
|
18K LIQUID LINE SIZE |
1/4 in |
|
18K SUCTION LINE SIZE |
1/2 in |
|
18K FILTER TYPE |
Reusable |
|
18K REMOTE CONTROL INCLUDED |
Yes |
|
18K NET DIMENSIONS (D X H X W) |
8.9 x 13.19 x 42.52 in |
|
18K NET WEIGHT (LBS) |
35.49 |
|
18K GROSS DIMENSIONS (D X H X W) |
17.68 x 14.29 x 46.73 in |
|
18K GROSS WEIGHT (LBS) |
49.6 |



















