Description
MRCOOL DIY 5th Gen E Star 9,000 BTU Single Zone Mini Split Complete System with 25 Ft. Line Set, 115V – DIY-09-HP-WM-115D25-O
Introducing the 5th Gen MRCOOL® DIY® 9K BTU Single Zone Mini-Split Air Handler for year-round heating and cooling in spaces 200 to 350 sq. ft. Easy DIY installation with included 25 ft. QuickConnect® line set and DIYPRO® cable. Customize comfort with wireless remote, SmartHVAC app, or voice commands. Industry-leading warranty for reliable, energy-efficient performance.
Features
- DIY Installation: Easy, tool-free setup with no prior experience required.
- DIY® QuickConnect® Line Set: Pre-charged with R-454B refrigerant for quick and vacuum-free installation.
- Environmentally Friendly Refrigerant: R-454B refrigerant has a lower Global Warming Potential (GWP) than older refrigerants like R-410A, reducing environmental impact while improving energy efficiency.
- DIYPRO® Cable: Eliminates the need for electrical conduit, offering enhanced durability against outdoor elements and wildlife.
- Wireless Control Options: Use the included remote, SmartHVAC app (Apple and Android), or voice commands via Amazon Alexa and Google Assistant.
- Follow Me Function: Maintains consistent comfort by adjusting airflow based on the remote’s location.
- Dry Mode: Acts as a dehumidifier to reduce excess moisture and improve indoor air quality.
- Gold Fin® Condenser: Provides corrosion resistance for coastal homes, ensuring long-lasting performance.
- Industry-Leading Warranty: Limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty.
Specifications
| Dimensions & Weight | |
|---|---|
| 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 | 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) |
| 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 |
What our Experts Think
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Energy Star Rated – High efficiency cooling & heating system that lowers energy bills.
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DIY-Friendly Installation – Comes with 25 ft. pre-charged line set, no special tools or pros required.
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Perfect for Small Spaces – 9,000 BTU capacity ideal for bedrooms, offices, and compact living areas.
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Smart Home Ready – Wi-Fi enabled for control via app, Alexa, or Google Assistant.
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Reliable Year-Round Comfort – Provides both heating and cooling with quiet, consistent performance.
Q&A
Q: What is included in the MRCOOL DIY 5th Gen 9,000 BTU system?
A: It comes as a complete single-zone mini split with indoor and outdoor units, a 25 ft. pre-charged line set, and installation accessories.
Q: Is this mini split energy efficient?
A: Yes, it’s Energy Star certified, offering high efficiency and reduced energy costs.
Q: Can I install it myself without a professional?
A: Absolutely—this system is designed for true DIY installation with pre-charged Quick Connect lines.
Q: What size space does it cool and heat?
A: The 9,000 BTU capacity is ideal for rooms up to about 350 sq. ft., such as bedrooms, offices, or small living areas.
Q: Does it provide both cooling and heating?
A: Yes, it’s a heat pump system that delivers reliable cooling in summer and heating in winter.
Maintenance Tips
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Clean air filters every 2–4 weeks to maintain airflow and efficiency.
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Wipe indoor unit with a soft, damp cloth; avoid harsh cleaners.
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Inspect outdoor condenser regularly for debris, leaves, or blockages.
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Keep a 2–3 ft. clearance around the outdoor unit for proper ventilation.
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Check line set connections periodically for leaks or damage.
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Schedule professional servicing once a year to ensure peak performance.
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Use the self-cleaning function (if available) to reduce mold and bacteria buildup.
Reviews
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