MRCOOL DIY 5th Gen E Star 9K BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V | System Set
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Visit CalculatorThe MRCOOL DIY 5th Gen E Star 9,000 BTU Single Zone Mini Split offers a perfect blend of energy efficiency, quiet performance, and true DIY-friendly installation. With a 25 ft. pre-charged Quick Connect line set and the included DIYPRO cable, homeowners can confidently install the system without special tools or HVAC experience. Ideal for rooms up to 375 sq ft, this Energy Star Certified system provides both heating and cooling year-round with smart control features and top-tier performance.
Please note: This system is designed for DIY installation and includes a pre-charged Quick Connect line set for easy setup without HVAC tools or certification.
True DIY Installation
Includes a 25 ft. pre-charged Quick Connect line set and DIYPRO cable, making it easy for homeowners to install without a vacuum pump or HVAC license.
Energy Star Certified
Built for energy-conscious homeowners, this unit meets ENERGY STAR® efficiency standards, helping to reduce utility costs.
Ideal for Small Spaces
9,000 BTU output is perfect for rooms between 180–375 sq ft, such as bedrooms, offices, or dens.
Smart Home Ready
Full integration with Amazon Alexa, Google Assistant, and the SmartHVAC app provides convenient voice and mobile control.
Follow Me Remote Function
The remote control monitors your position and adjusts the system for personalized comfort wherever you are in the room.
Low Ambient Heating & Cooling
Performs in outdoor temperatures as low as 5°F, keeping your space comfortable year-round.
Quiet Operation & Easy Maintenance
Engineered for low-noise output with washable filters and built-in diagnostics for simple upkeep.

Everything you need is included with your product.
| Specification | Details |
| 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 |
| Specification | Details |
| Zone Capacity | 1 |
| Cooling Capacity | 9,000 BTU |
| EER2 | 14 |
| SEER2 | 23.6 |
| Heating Capacity | 10,000 BTU |
| HSPF2-4 | 11.5 |
| HSPF2-5 | 8.6 |
| Coverage Area | 200 - 350 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) |
| Specification | Details |
| Voltage | 115V |
| Phase | 1 |
| Cycle | 60 Hz |
| Max Fuse Breaker | 20A |
| Min Circuit Ampacity | 18A |
| Specification | Details |
| 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. |
| Specification | Details |
| 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 |
| Specification | Details |
| 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. |
Is this model really suitable for DIY installation?
Yes. It’s specifically engineered for homeowners with no HVAC background. The pre-charged Quick Connect line set and DIYPRO cable make installation fast, safe, and tool-free.
What room size is best for this 9K BTU unit?
This system is ideal for areas between 180–375 sq ft, such as bedrooms, home offices, or compact studios.
What does ENERGY STAR® Certification mean for this unit?
The ENERGY STAR® rating signifies high efficiency, helping you save on electricity bills while maintaining reliable performance.
Does it include smart home controls?
Yes. It comes equipped with the SmartHVAC WiFi module, supporting control through the SmartHVAC app, and voice assistants like Amazon Alexa and Google Assistant.
Does this unit provide both cooling and heating?
Absolutely. This is a heat pump system, delivering both cooling in summer and heating in winter for year-round comfort.
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