MRCOOL DIY® 5th Gen E Star 9,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-09-HP-WM-115D25-O

MRCOOL DIY® 5th Gen ENERGY STAR® 9K BTU Single Zone Mini Split – The Ultimate DIY HVAC Solution

Enhance your home’s heating and cooling efficiency with the MRCOOL DIY® 5th Gen ENERGY STAR® 9,000 BTU Single Zone Mini-Split System. Engineered for true DIY installation, this ductless heat pump mini-split is perfect for rooms up to 400 sq. ft.. With R-454B refrigerant, ENERGY STAR® certification, and smart home integration, this system provides powerful, energy-efficient performance all year round—without the need for professional installation.

Effortless DIY Installation – No HVAC Technician Required

Say goodbye to costly installations! The MRCOOL DIY® 9K BTU Mini Split comes with:

✔ Pre-Charged 25 ft. Quick Connect® Line Set – Vacuum-free, tool-free setup for easy installation.
✔ DIYPRO® Cable – Enhances safety and durability, eliminating the need for electrical conduit while protecting against outdoor elements and wildlife.
✔ Step-by-Step DIY Guide & Video Support – Get your system up and running with ease.

💡 Install it yourself and start enjoying powerful climate control in hours—not days!

Eco-Friendly & Energy-Efficient R-454B Refrigerant

This ductless mini-split system uses R-454B refrigerant, a superior alternative to R-410A with a lower Global Warming Potential (GWP), making it a more environmentally responsible HVAC solution.

✔ ENERGY STAR® Certified – Maximizes efficiency, lowers energy bills, and reduces carbon footprint.
✔ Smart Inverter Technology – Adjusts output based on demand, improving performance and longevity.

Smart Climate Control – Comfort at Your Fingertips

Experience next-level convenience with advanced smart home integration and intelligent climate control features:

✔ Wireless Control with Smart HVAC App – Adjust temperature, mode, and settings via your smartphone (iOS & Android).
✔ Voice Control Compatible – Works with Amazon Alexa & Google Assistant for hands-free operation.
✔ Follow Me® Function – The remote acts as a thermostat, ensuring even heating and cooling based on its location.
✔ Dry Mode for Dehumidification – Removes excess moisture for improved indoor air quality and comfort.
✔ Gold Fin® Condenser – Corrosion-resistant and built to last, making it ideal for coastal and humid climates.
✔ Ultra-Quiet Operation – Enjoy whisper-quiet performance for undisturbed comfort.

Built for Durability & Reliable Performance

The MRCOOL DIY® 9K BTU Mini Split is Intertek Certified (5031495), guaranteeing industry-leading safety, efficiency, and durability.

✔ Ideal for Year-Round Use – Delivers powerful heating and cooling even in extreme temperatures.
✔ Designed for Longevity – Corrosion-resistant components protect against rust, moisture, and weather damage.

Industry-Leading Warranty – Peace of Mind Guaranteed

MRCOOL offers an unmatched warranty, ensuring long-term protection:

✔ Limited Lifetime Warranty on the Compressor
✔ 7-Year Compressor Warranty
✔ 5-Year Parts Warranty

Why Buy from MRCOOL DIY Direct?

As the most trusted independent MRCOOL dealer in the USA, we provide:

✅ Factory-Direct Pricing – Get the best deals on genuine MRCOOL systems.
✅ Fast & Secure Shipping – Reliable delivery across the USA.
✅ Expert DIY Support – Our team is here to help with installation and troubleshooting.

Upgrade to the MRCOOL DIY® 5th Gen ENERGY STAR® 9K BTU Mini Split Today!

Order now and enjoy powerful, efficient, and easy-to-install heating and cooling—designed specifically for DIYers like you! 🚀

At MRCOOL DIY Direct, we understand that every home is different, and that the standard 25-foot pre-charged line set included with MRCOOL DIY systems may not fit every installation. That’s why we offer a range of longer and customizable line set options, making it easier for you to get exactly what you need — without extra hassle or unnecessary parts.

🚀 How Our Line Set Options Work:

• Standard System:
  Every system from MRCOOL comes factory-bundled with a 25' pre-charged line set and 25' of control wire.

• Choosing an Alternate Length:
  If you select a different line set length (such as 16', 35', 41', 50', or 75'):

  • Your order will be custom-bundled individually at our warehouse.

  • This process typically adds 1–2 extra business days for preparation and shipping.

  • You will receive the exact pre-charged line set footage you requested — either as a single line set or a combination of two line sets (if needed) to achieve the proper length.

📦 Important Details to Know:

• Single vs Combined Lengths:

  • 16': Factory 25' is swapped for a 16' pre-charged line set.

  • 35': A single 35' pre-charged line set is provided.

  • 41': Combines your standard 25' line set with an additional 16' line set + supplied coupler + extended control wire.

  • 50': A continuous 50' pre-charged line set is provided with longer control wire.

  • 75': Combines a 25' + 50' pre-charged line set with couplers and 75' of extended control wire.

• Control Wire Upgrade:
  Any time your line set length exceeds 25', you will receive a new longer control wire matched to the total length.

  We never recommend splicing control wires. These systems are essentially computers — shielded, continuous control cable ensures no interference, no corrosion, and no installation headaches down the road.

🛒 Why Shoppers Trust MRCOOL DIY Direct:

Unlike big-box retailers that sell you a one-size-fits-all kit (and leave you hunting for missing parts), we custom-configure your system so you have everything you need from the start.

• No extra trips to the hardware store.

• No guessing which coupler or cable you need.

• No surprises during installation.

With years of experience specializing in DIY HVAC systems, MRCOOL DIY Direct has earned a reputation as the USA's most trusted independent HVAC dealer.
We are committed to making DIY HVAC installation simple, affordable, and frustration-free — and our custom line set bundling is just one more way we deliver on that promise.

🔧 Need help choosing the right line set length for your project?
Contact our expert team today — we’re here to help you get it done right the first time!