MRCOOL DIY 5th Gen E Star 18,000 BTU Single Zone Mini Split Air Handler 230V with DIYPRO Cable, DIY-18-HP-WMAH-230D25-O
The MRCOOL DIY 18K BTU Single Zone Mini-Split Air Handler delivers efficient heating and cooling for year-round comfort in spaces between 500 to 750 sq. ft. This air handler offers wireless remote access, voice control, and app-based management, making it ideal for modern living. Engineered for straightforward DIY installation, this system is designed to be reliable, energy-efficient, and perfect for home offices, bedrooms, or additional living areas.
MRCOOL DIY 5th Gen E Star 18,000 BTU Features
DIY Installation
Tool-Free Setup - Easily install the system without special tools or HVAC experience, using the included DIYPRO® cable.
QuickConnect® Line Set
Pre-Charged Convenience - Comes ready with R-454B refrigerant, allowing a vacuum-free installation.
Eco-Friendly Refrigerant
Reduced Environmental Impact - R-454B offers a lower Global Warming Potential than R-410A.
DIYPRO® Cable
Durability & Protection - Replaces conduit with a rugged, weather-resistant cable that resists pests and outdoor wear.
Wireless Control Options
Smart Connectivity - Manage settings via remote, SmartHVAC app, or voice assistants like Alexa and Google.
Follow Me Function
Targeted Comfort - Adjusts airflow based on the remote’s location for consistent temperature.
Dry Mode
Enhanced Air Quality - Removes excess humidity, acting as a dehumidifier.
Certified Quality
Verified Performance - Intertek listed 5031495 for safety and reliability.
MRCOOL DIY 5th Gen E Star 18,000 BTU Applications
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Bedrooms – Whisper-quiet operation and personalized climate control for restful sleep.
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Home Offices – Maintain focus with consistent temperature and silent performance.
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Living Areas – Efficiently heat or cool mid-sized rooms up to 750 sq. ft.
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Sunrooms – Year-round comfort in hard-to-regulate spaces.
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Studios – Smart and compact solution for creative or work-from-home environments.
What’s Included?
MRCOOL DIY 5th Gen E Star 18,000 BTU Specifications
| Specification |
Value |
| Dimensions |
42.52" W x 8.90" D x 13.19" H |
| Mount Type |
Wall |
| Weight |
35.49 lbs / 16.1 kg |
| Cooling Capacity |
18,000 BTU |
| EER2 |
13.7 |
| SEER2 |
22.5 |
| Heating Capacity |
18,000 BTU |
| HSPF2-4 |
11.5 |
| HSPF2-5 |
8.5 |
| Coverage Area |
500 to 750 sq ft. |
| Indoor Noise Level (Hi/Mi/Lo) |
54.5 / 44.5 / 40.5 / 30.5 / 19.0 dB(A) |
| Number of Speeds |
5 |
| Voltage |
208-230V |
| Phase |
1 |
| Cycle |
60 Hz |
| Max Fuse Breaker |
15A |
| Min Circuit Ampacity |
3A |
| Refrigerant Type |
R-454B |
| Liquid Line Size |
1/4" |
| Suction Line Size |
1/2" |
| 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 |
| Certifications |
UL Listed, ETL Listed, Energy Star Certified, AHRI Certified |
| Warranty |
7 Years Compressor
5 Years Parts
Extended Limited Lifetime Replacement
*If the original owner does not register the unit, the warranty defaults to the standard 5 year parts, 7 year compressor warranty.
**The original, registered owner must be enrolled in the MrCool Care Program every year in order to qualify for the 7 year full unit replacement for compressor failure and lifetime compressor replacement. |
Frequently-Asked Questions
Is professional installation required?
No. The system is designed for DIY setup with pre-charged components and user-friendly instructions.
Can I control the unit with my smartphone?
Yes. Use the SmartHVAC app for remote control or connect to Alexa/Google Assistant for voice commands.
Does this unit work in cold climates?
Yes. It's rated for year-round operation, including heating during cold seasons.
