We are thrilled to announce our new 5th Generation MRCOOL® DIY® 18k BTU Multi-Zone Ductless Mini Split Condenser, which is the best and most convenient way to get comfortable. You won’t need the services of an HVAC professional to install this unit, because it’s do-it-yourself! Achieving a SEER2 rating of 23.9 and an HSPF2-4 rating of 10, you can rest easy knowing this unit will help you save money as you chill. This condenser can also support up to three air handlers, meaning it can heat and cool three rooms that are a combined 750 square feet in size, making it a perfect option if you have spare bedrooms in need of heating and cooling.
What makes this system different is our patented pre-charged Quick Connect® line sets filled with R-454B, an incredibly efficient and eco-friendly refrigerant. This switch from the previous refrigerant makes the system even more efficient and sustainable than before. The design of these innovative line sets allow you to install the system yourself, saving you time and money.
This condenser is more than just a heating and cooling unit. When operating as a system, you will be able to experience total customization with the unit’s wealth of features. For example, you can integrate your system with Amazon Alexa or Google Home through the Smart HVAC app, allowing you to control your system with your voice and monitor its operation with the touch of a button. You can also set schedules, temperature ranges, and mode of operation through the app. The power of comfort is in your hands with this system. In the unlikely event that something happens to the system, we’ve got you covered. The DIY® series comes with one of the best warranties in the industry - a 7 year compressor warranty, a 5 year parts warranty, and a Limited Lifetime Replacement warranty with enrollment in the MRCOOL® Care Program. Give yourself the best comfort with the DIY®.
Dimensions | 13.46" D x 26.5" H x 35.04" W |
SEER2 |
23.9 |
EER2 |
13 |
HSPF2-4 |
10 |
HSPF2-5 |
7.8 |
Tonnage |
1.5 |
Cooling Capacity (BTU) |
18000 |
Heating Capacity (BTU) |
18000 |
Voltage (V) |
208/230 |
Phase |
1 |
Cycle |
60 |
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 |
Max Lineset Length (FT) |
172.2 |
Liquid LIne Size |
1/4 |
Suctio Line Size |
3/8 |
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 |
Base Compressor Warranty |
7 |
Has Batteries |
Yes |
Contains Electronics |
Yes |
Contans Chemicals |
Yes |
Contains Aerosol |
Yes |
Contains Compressed Gas |
Yes |
Proposition 65 Warning |
Yes |
The 5th Generation MRCOOL® DIY® 12K BTU Ductless Mini-Split Heat Pump is an efficient and versatile climate control solution for spaces up to 550 sq. ft. Designed with homeowners in mind, this system offers a true DIY installation process, eliminating the need for specialized tools or professional assistance. This makes setup quick, straightforward, and cost-effective. One of its standout features is the pre-charged 25-foot DIY® QuickConnect® line set, pre-filled with R-454B refrigerant. T
his eliminates the need for vacuuming, significantly reducing installation time and expenses. The included DIYPRO® cable further streamlines installation by removing the need for electrical conduit while also offering enhanced durability and protection against the elements. Operating the system is simple and convenient, with multiple control options available. Adjust temperature settings with the wireless remote, the SmartHVAC app for iOS and Android devices, or hands-free voice commands via Amazon Alexa and Google Assistant. For personalized comfort, the Follow Me function ensures consistent temperature regulation by adjusting airflow based on the remote’s location, while Dry Mode helps control excess humidity.
Built for longevity, the Gold Fin® Condenser provides superior corrosion resistance, making it ideal for coastal environments. Supported by industry-leading warranties—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—this MRCOOL® DIY® system delivers reliable, year-round comfort with smart features and effortless installation.
Dimensions | 7.44" D x 11.63" H x 31.57" W |
Voltage (V) |
208/230 |
Phase |
1 |
Cycle |
60 |
Mount Type |
Wall |
Color |
White |
Max Coverage Area |
550 sqft |
Oscillation |
Yes |
Filter Type |
Reusable |
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 |
ETL Listed |
Yes |
AHRI Certified |
Yes |
Registered Warranty |
Extended Limited Lifetime* |
Base Parts Warranty |
5 |
Base Compressor Warranty |
7 |
Has Batteries |
Yes |
Contains Electronics |
Yes |
Contains Chemicals |
Yes |
Contains Aerosol |
Yes |
Contains Compressed Gas |
Yes |
Proposition 65 Warning |
Yes |
This remote is included with each air handler in MRCOOL's 5th Generation DIY Ductless Mini Split Systems.
Dimensions | 2" W x 6" L x 1" H |
Works with | MRCOOL DIY 5th Generation Mini Splits |
Restricted States | GU;PR;VI |
Color | White |
What BTU rating should I choose for my air handler?
Air Handler BTU | Coverage Area/Room Size (Sq. Ft.)* |
6K |
Up to 200 Sq. Ft.
|
9K |
Up to 375 Sq. Ft.
|
12K | Up to 500 Sq. Ft. |
18K | Up to 750 Sq. Ft. |
24k | Up to 1,000 Sq. Ft. |
36k | Up to 1,500 Sq. Ft. |
*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.
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