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MRCOOL DIY 5th Gen E-Star Series 18K BTU, 1.5 Ton, 21.5 SEER2 Ductless Mini-Split Heat Pump System with Ceiling Cassette Air Handler – R-454B
The MRCOOL DIY 5th Gen E-Star Series 18K BTU Mini-Split Heat Pump System delivers next-generation efficiency, low environmental impact, and true do-it-yourself installation. This single-zone package features a premium ceiling cassette air handler for discreet comfort, providing powerful heating and cooling performance without compromising aesthetics.
Unlike traditional wall-mounted units, the MRCOOL ceiling cassette fits neatly between standard 16” ceiling joists, making it the perfect low-profile solution for modern homes and office spaces. This system uses MRCOOL’s latest R-454B refrigerant , offering a lower Global Warming Potential (GWP) and compliance with updated refrigerant regulations.
💡 What’s Included in This Bundle?
✔ MRCOOL DIY 5th Gen 18K BTU, 1.5 Ton, 21.5 SEER2 Heat Pump Condenser (Model: DIY-18-HP-C-230C)
✔ MRCOOL DIY 5th Gen 18K BTU Ceiling Cassette Air Handler (Model: DIYCASSETTE18HP-230C25)
✔ Standard 25 Ft. MRCOOL Pre-Charged Quick Connect Line Set – R-454B (No vacuum or special tools required)
💬 Need a longer line set? This system comes standard with a 25' pre-charged line set . You can upgrade to a 35' continuous line set with matching control wire for installations requiring a bit more reach without added connections.
For even greater flexibility, extended configurations are also available in 41' , 50' , or 75' total line lengths . These setups use the included 25' pre-charged line set paired with an additional pre-charged line set connected via MRCOOL Quick Connect® couplers , along with a longer control wire.
This sectional or continuous approach provides easy installation options for every scenario—from simple straight runs to complex or tight routing—while maintaining MRCOOL’s leak-proof reliability and DIY simplicity.
🌡️ MRCOOL 5th Gen Heat Pump Condenser – Key Features
18,000 BTU Output – Ideal for heating & cooling single-zone spaces up to ~750–800 sq ft
21.5 SEER2 High Efficiency – Lower utility costs without sacrificing performance
Pre-Charged with R-454B Refrigerant – Eco-friendly, low-GWP refrigerant
Gold Fin Condenser Coating – Corrosion-resistant for long outdoor life
Cold Weather Ready – Operates in temperatures down to 5°F
True DIY Installation – Quick Connect fittings, no vacuum pump needed
Warranty – 7-Year Compressor / 5-Year Parts (Lifetime Limited Compressor with registration)
🔲 MRCOOL Ceiling Cassette Air Handler – 18K BTU
Flush Ceiling Installation – Fits between 16” joists for a seamless appearance
Multiple Comfort Modes – FAN ONLY, QUIET, SLEEP, AUTO for complete control
Elevating Air Filter System – Drops up to 4.9 ft for easy, tool-free cleaning
Unified Aesthetic – Matches MRCOOL multi-zone casset
