
MRCOOL DIY | 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O
5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O
Smart Comfort. DIY Installation. High Efficiency.
Upgrade your indoor comfort with the 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O—a powerful, Energy Star® certified system designed for do-it-yourself installation. Perfect for spaces between 500 and 750 sq. ft., this all-in-one HVAC solution delivers year-round heating and cooling without the cost or complexity of hiring a contractor.
Backed by advanced features, durable components, and an eco-conscious design, this system ensures high-efficiency performance, quiet operation, and long-term reliability for your home or workspace.
Top Benefits
True DIY Installation
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No vacuuming or special tools required.
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Comes with a 25 ft. pre-charged QuickConnect® line set and DIYPRO® cable for a fast, safe, and simple setup.
Eco-Friendly R-454B Refrigerant
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Lower Global Warming Potential (GWP) than traditional refrigerants like R-410A.
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Reduces environmental impact while boosting system efficiency.
Smart Climate Control
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Control temperature settings remotely via the SmartHVAC app, included wireless remote, or voice commands using Amazon Alexa or Google Assistant.
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Stay comfortable and connected from anywhere.
Adaptive Comfort with Follow Me Function
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Automatically adjusts airflow and temperature based on the remote’s location.
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Keeps your room evenly comfortable, wherever you are.
Quiet and Efficient
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Whisper-quiet operation and Energy Star® certification ensure optimal energy savings and minimal noise.
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Ideal for bedrooms, offices, or living spaces where peace and comfort matter most.
What's Included
- 18K BTU Condenser
- 18K BTU Air Handler
- 25 ft. Line Set + DIY Pro Cable
- Remote Control
Specification
Dimensions & Weight | |
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Condenser Dimensions | 35.04 W" x 13.46 D" x 26.50 H" |
Air Handler Dimensions | 42.52 W" x 8.90 D" x 13.19 H" |
Condenser Weight | 93.48 lbs / 42.4 kg |
Air Handler Weight | 35.49 lbs / 16.1 kg |
Capacity & Performance | |
Zone Capacity | 1 |
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. |
Outdoor Noise Level | 58.5 dB(A) |
Indoor Noise Level (Hi/Mi/Lo) | 54.5/44.5/40.5/30.5/19.0 dB(A) |
Electrical Requirements | |
Voltage | 208-230V |
Phase | 1 |
Cycle | 60 Hz |
Max Fuse Breaker | 20A |
Min Circuit Ampacity | 18A |
Refrigerant & Piping | |
Refrigerant Type | R-454B |
Refrigerant Volume | 44.80 oz |
Liquid Line Size | 1/4" |
Suction Line Size | 1/2" |
Max Line Set Length | 98.4 ft. |
Features | |
Inverter | DC |
Compressor Type | Rotary |
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 & Warranty | |
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. |
Manual and Downloads
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.

Orders over $500 include a FREE (Normally $149.99) 80-Page DIY Solar eBook — added automatically at checkout.
Frequently Asked Questions

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