Description
Upgrade your home’s heating and cooling system with the 5th Gen MRCOOL® DIY® 18K BTU Single Zone Mini-Split Air Handler, designed for effortless DIY installation and year-round climate control in spaces ranging from 500 to 750 sq. ft. Engineered for efficiency, this system features advanced inverter technology, eco-friendly R-454B refrigerant, and smart home integration, ensuring superior comfort without the need for professional installation.
Effortless DIY Installation – No HVAC Technician Needed
MRCOOL’s patented DIY® technology allows you to install your system quickly and easily—no special tools, vacuum pumps, or professional expertise required.
✔ DIY® QuickConnect® Line Set – Pre-charged with R-454B refrigerant, enabling a vacuum-free, tool-free installation.
✔ DIYPRO® Cable – Enhances safety and durability, eliminating the need for electrical conduit while providing superior protection against outdoor elements and wildlife.
✔ Step-by-Step Installation Guide & Video Support – Clear, user-friendly instructions to help you install with confidence.
💡 Perfect for homeowners and DIY enthusiasts looking for an affordable, professional-grade HVAC solution!
Eco-Friendly R-454B Refrigerant – Lower GWP, Higher Efficiency
The 5th Gen MRCOOL® DIY® Mini-Split is designed with R-454B refrigerant, an advanced, environmentally friendly alternative to R-410A.
✔ Lower Global Warming Potential (GWP) – Reduces environmental impact while maximizing efficiency.
✔ ENERGY STAR® Certified Performance – Saves energy and lowers utility bills.
✔ Smart Inverter Technology – Adjusts compressor speed for optimal energy savings and quiet operation.
Smart Home Integration – Climate Control at Your Fingertips
Enjoy the ultimate convenience with multiple ways to control your indoor comfort:
✔ SmartHVAC App – Adjust settings via your smartphone (iOS & Android) from anywhere.
✔ Voice Command Compatible – Works with Amazon Alexa & Google Assistant for hands-free control.
✔ Wireless Remote Control – Easily manage temperature, fan speed, and modes.
✔ Follow Me® Function – The remote acts as a personal thermostat, adjusting airflow based on its location.
✔ Dry Mode (Dehumidification) – Removes excess moisture to improve indoor air quality and reduce humidity.
Durability & Long-Lasting Performance
Built to withstand harsh weather conditions, the MRCOOL DIY® Mini-Split is designed for years of reliable performance.
✔ Gold Fin® Condenser – Corrosion-resistant coating protects against salt air, rust, and extreme weather, making it ideal for coastal homes.
✔ Intertek Certified (5031495) – Rigorously tested to meet industry-leading safety and performance standards.
✔ Ultra-Quiet Operation – Experience whisper-quiet heating and cooling, perfect for bedrooms, offices, and living spaces.
Industry-Leading Warranty – Confidence in Every Purchase
MRCOOL backs the 5th Gen DIY® Mini-Split with an unmatched industry warranty, giving you total peace of mind:
✔ Limited Lifetime Warranty on the Compressor
✔ 7-Year Compressor Warranty
✔ 5-Year Parts Warranty
How Our Line Set Options Work:
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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.
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This process typically adds 1–2 extra business days for preparation and shipping.
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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.
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📦 Important Details to Know:
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Single vs Combined Lengths:
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16′: Factory 25′ is swapped for a 16′ pre-charged line set.
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35′: A single 35′ pre-charged line set is provided.
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41′: Combines your standard 25′ line set with an additional 16′ line set + supplied coupler + extended control wire.
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50′: A continuous 50′ pre-charged line set is provided with longer control wire.
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75′: Combines a 25′ + 50′ pre-charged line set with couplers and 75′ of extended control wire.
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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.
