
MRCOOL DIY | 5th Gen E Star 12,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O
5th Gen E Star 12,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O
DIY Installation. Smart Control. Energy Star® Certified Efficiency.
Upgrade your home's comfort with the 5th Gen E Star 12,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O—a high-performance, Energy Star® certified solution designed for easy DIY installation. Ideal for rooms between 350 and 500 sq. ft., this ductless mini-split system delivers reliable year-round heating and cooling with no need for professional setup.
Packed with smart features, eco-friendly technology, and long-lasting durability, it provides exceptional climate control and convenience—all while helping you save on energy bills.
Top Features & Benefits
True DIY Installation
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No vacuuming or specialized tools needed.
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Includes a 25 ft. pre-charged Quick Connect® line set and DIYPRO® cable for safe, quick installation.
Energy Efficient & Eco-Conscious
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Uses R-454B refrigerant—a next-generation solution with significantly lower Global Warming Potential (GWP) than older refrigerants.
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Certified by Energy Star® for reduced energy use and long-term savings.
Smart Climate Control
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Manage settings remotely through the SmartHVAC app, wireless remote, or by using voice commands with Amazon Alexa and Google Assistant.
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Set schedules and automate comfort to suit your lifestyle.
Follow Me Technology
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The system tracks the remote's location and adjusts airflow and temperature accordingly, keeping the space evenly comfortable.
Quiet & Reliable Operation
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Operates at whisper-quiet levels while maintaining consistent performance.
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Backed by an industry-leading warranty for long-term peace of mind.
What's Included
- 12K BTU Condenser
- 12K BTU Air Handler
- 25 ft. Line Set + DIY Pro Cable
- Remote Control
Specification
Dimensions & Weight | |
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Condenser Dimensions | 30.12 W" x 11.93 D" x 21.85 H" |
Air Handler Dimensions | 31.57 W" x 7.44 D" x 11.69 H" |
Condenser Weight | 65.48 lbs / 29.7 kg |
Air Handler Weight | 24.91 lbs / 11.3 kg |
Capacity & Performance | |
Zone Capacity | 1 |
Cooling Capacity | 12,000 BTU |
EER2 | 12.5 |
SEER2 | 23.5 |
Heating Capacity | 12,000 BTU |
HSPF2-4 | 10.2 |
HSPF2-5 | 7.6 |
Coverage Area | 350 to 500 sq ft. |
Outdoor Noise Level | 54 dB(A) |
Indoor Noise Level (Hi/Mi/Lo) | 43.0/39.5/33.5/24.0/18.0 dB(A) |
Electrical Requirements | |
Voltage | 115V |
Phase | 1 |
Cycle | 60 Hz |
Max Fuse Breaker | 20A |
Min Circuit Ampacity | 18A |
Refrigerant & Piping | |
Refrigerant Type | R-454B |
Refrigerant Volume | 30.34 oz |
Liquid Line Size | 1/4" |
Suction Line Size | 3/8" |
Max Line Set Length | 82 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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