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® 18K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler is a powerful and efficient solution for heating and cooling spaces up to 800 sq. ft.
Designed with a true DIY installation in mind, this system eliminates the need for special tools or professional assistance, making setup fast, simple, and cost-effective. One of the standout features is the pre-charged 25-foot DIY® QuickConnect® line set, which comes pre-filled with R-454B refrigerant. This means there’s no need for vacuuming, cutting down on installation time and costs. Additionally, the included DIYPRO® cable removes the need for electrical conduit, providing added durability and protection against outdoor elements and wildlife. Controlling your system is effortless with multiple options to fit your lifestyle. Adjust settings using the wireless remote, the SmartHVAC app for Apple and Android devices, or hands-free voice commands through Amazon Alexa and Google Assistant.
Engineered for long-lasting performance, the Gold Fin® Condenser in the outdoor unit offers superior corrosion resistance, especially beneficial in coastal environments. For added comfort, the Follow Me function on the remote allows the air handler to monitor and adjust airflow based on the remote’s location, ensuring even temperature control. Dry Mode helps maintain a comfortable indoor environment by reducing excess humidity and condensation buildup. Backed by industry-leading warranties—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—the 5th Generation MRCOOL® DIY® is built for reliability. Enjoy smart features, easy installation, and dependable year-round comfort with this innovative ductless mini-split system.
Dimensions |
8.9" D x 13.19" H x 42.52" W |
Tonnage |
1.5 |
Voltage (V) |
208/230 |
Phase |
1 |
Cycle |
60 |
Max Fuse Breaker (A) |
15 |
Min Circuit Ampacity (A) |
3 |
Mount Type |
Wall |
Color |
White |
Max Coverage Area |
800 sqft |
Decibel Rating Low (DBA) |
19 |
Decibel Rating High (DBA) |
54.5 |
Number of Speeds |
5 |
Oscillation |
Yes |
Liquid Line Size |
1/4 |
Suction Line Size |
1/2 |
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 | |
Remote Control Included |
Yes |
UL Listed |
Yes |
ETL Listed |
Yes |
Energy Star Certified | |
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 |
Net Weight (Lbs) |
35.49 |
Gross Depth (In) |
17.68 |
Gross Height (In) |
14.29 |
Gross Width (In) |
46.73 |
Gross Weight (Lbs) |
49.6 |
Check out the new 5th Generation MRCOOL® DIY® 6K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler! Designed for an easy and hassle-free installation, this system requires no special tools or prior experience and effectively heats or cools spaces up to 200 sq. ft. The pre-charged 25-foot DIY® QuickConnect® line set, which is pre-charged with R-454B refrigerant, eliminates the need for vacuuming, making installation faster, easier, and more cost-effective.
The included DIYPRO® cable removes the need for electrical conduit, offering added durability against the outdoor elements and wildlife. Control is effortless with multiple options, including the wireless remote, the SmartHVAC app for Apple and Android devices, and hands-free voice commands via Amazon Alexa and Google Assistant. The Gold Fin® Condenser provides superior corrosion resistance for coastal homes, ensuring long-lasting performance in harsh conditions. Designed for both comfort and efficiency, the system's wireless remote features the innovative Follow Me function, which allows the air handler to adjust airflow temperature based on the remote's location, maintaining consistent comfort throughout the room.
Additionally, Dry Mode helps reduce humidity by acting as a dehumidifier, removing excess condensation. Backed by an industry-leading warranty—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—the 5th Generation MRCOOL® DIY® 6K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler is built for lasting reliability. Enjoy advanced technology, simple installation, and year-round comfort with confidence.
Dimensions | 7.44" D x 11.69" H x 31.57" W |
Voltage (V) |
208/230 |
Phase |
1 |
Cycle |
60 |
Mount Type |
Wall |
Color |
White |
Max Coverage Area |
200 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 or Advantage 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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