The MRCOOL® DIY® 4th Generation 18K ductless mini split system provides efficient year-round heating and cooling for spaces that do not have existing ductwork. With 18,000 BTU of cooling and heating capacity, up to 22.7 SEER2 efficiency, and a 1.5-ton configuration, this system is designed to deliver reliable comfort while helping reduce operating costs.
Designed with DIY installation in mind, the system includes a pre-charged 25-foot Quick Connect® line set, control wire, and remote control, allowing installation without specialized HVAC tools or extensive training. The single-zone system is well suited for garages, workshops, sunrooms, RVs, trailers, and other residential spaces up to approximately 750 square feet when properly sized.
The MRCOOL® DIY 18K features variable-speed DC inverter technology, a corrosion-resistant Gold Fin® condenser, refrigerant leakage detection, and integrated SmartHVAC Wi-Fi compatibility. ENERGY STAR® and AHRI certification, along with a 5-year parts warranty and 7-year compressor warranty, provide additional confidence in long-term performance.
What's Included
-
MRCOOL DIY 18K 4th Generation Outdoor Condenser, 18,000 BTU -
MRCOOL DIY 18K 4th Generation Wall-Mounted Indoor Air Handler -
MRCOOL DIY 25 ft Pre-Charged Quick Connect Line Set with Communication Wire, Wall Sleeve, Drain Line Extension, and UV-Resistant Wrap
Specifications:
|
BRAND NAME |
MRCOOL |
|
SERIES |
DIY 4th Gen E STAR |
|
MODEL |
DIY-18-HP-WM-230C25 |
|
GTIN |
00810035935167 |
|
UPC |
810035935167 |
|
UNIT TYPE |
Mini Split |
|
SEER2 |
22.7 |
|
EER |
12.5 |
|
HSPF |
11.5 / 9 |
|
CFM |
465.29 / 361.76 / 304.12 |
|
TONNAGE |
1.5 |
|
COOLING CAPACITY |
18,000 BTU |
|
HEATING CAPACITY |
18,000 BTU |
|
VOLTAGE |
208-230 V |
|
PHASE |
1 |
|
CYCLE |
60 Hz |
|
MAX FUSE / BREAKER |
30 A |
|
MIN CIRCUIT AMPACITY |
18 A |
|
COLOR |
White |
|
RATED LOAD |
0.25 A |
|
MAX COVERAGE AREA |
Up to 750 sqft |
|
ZONE CAPACITY |
1 |
|
REFRIGERANT TYPE |
R-410A |
|
REFRIGERANT VOLUME |
56.44 oz |
|
DECIBEL RATING |
44.5 / 37 / 31 |
|
DECIBEL RATING LOW |
31 dBA |
|
DECIBEL RATING HIGH |
44.5 dBA |
|
OSCILLATION |
4-W |
|
INVERTER |
Yes |
|
MIN AMBIENT COOL |
-13F - 122F |
|
MIN AMBIENT HEAT |
-13F - 75F |
|
LINE SET LENGTH |
25 ft |
|
MAX LINESET LENGTH |
98.42 ft |
|
LIQUID LINE SIZE |
1/4 in |
|
SUCTION LINE SIZE |
1/2 in |
|
COMPRESSOR MOTOR TYPE |
Rotary |
|
CONDENSER FAN MOTOR RPM |
810 / 720 |
|
BLOWER MOTOR RPM |
1120 / 950 / 700 |
|
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 |
|
REMOTE CONTROL INCLUDED |
Yes |
|
UL LISTED |
Yes |
|
ENERGY STAR CERTIFIED |
Yes |
|
AHRI CERTIFIED |
Yes |
|
REGISTERED WARRANTY |
Limited Lifetime Compressor |
|
BASE WARRANTY |
5-year Parts / 7-year Compressor |
|
BASE PARTS WARRANTY |
5-year Parts |
|
BASE COMPRESSOR WARRANTY |
7-year Compressor |
|
CONDENSER DEPTH |
14.29 in |
|
CONDENSER HEIGHT |
27.64 in |
|
CONDENSER WIDTH |
33.27 in |
|
CONDENSER WEIGHT |
98.77 lb |
|
AIR HANDLER DEPTH |
8.90 in |
|
AIR HANDLER HEIGHT |
13.19 in |
|
AIR HANDLER WIDTH |
42.52 in |
|
AIR HANDLER WEIGHT |
30.20 lbs |
|
FREIGHT CLASS |
250 |










