MRCOOL DIY® 5th Gen E-Star Single-Zone Mini Split Systems (9K–36K BTU) The MRCOOL DIY® 5th Generation E-Star Single-Zone Mini Split Series delivers high-efficiency heating and cooling for homeowners who want exceptional cold-weather performance without the cost or complexity of professional installation. Available in capacities ranging from 9,000 to 36,000 BTU, this series allows you to choose the exact size needed for your space while maintaining consistent comfort and energy savings. The E-Star series is designed for customers who demand better heating performance in colder climates compared to base-model heat pumps. While all MRCOOL systems cool efficiently, the E-Star lineup is engineered with enhanced compressor performance to maintain heat output and efficiency at lower outdoor temperatures. Installation is truly DIY-friendly. Each system is compatible with MRCOOL® DIY® Quick Connect Pre-Charged Line Sets, eliminating the need for vacuum pumps, refrigerant handling, or HVAC licensing. Most homeowners can complete installation using basic tools, saving thousands in installation costs. Advanced inverter technology optimizes compressor speed for steady temperatures, reduced energy consumption, and quiet operation. All E-Star single-zone systems are ENERGY STAR® certified and use R-454B refrigerant, a lower-GWP alternative to R-410A that meets modern efficiency and environmental standards. Smart comfort control comes standard. Adjust settings through the included wireless remote, the MRCOOL Smart HVAC app, or voice control via Amazon Alexa and Google Assistant. The Follow Me® function allows the system to sense temperature at the remote’s location, helping maintain comfort exactly where you are. Built for long-term durability, the outdoor condenser features Gold Fin® corrosion-resistant coating, making these systems suitable for coastal, humid, or harsh environments. Quiet operation makes the E-Star series ideal for bedrooms, offices, living spaces, and additions. Square Footage Recommended BTU 150 – 350 sq ft 9,000 BTU (9k) 351 – 500 sq ft 12,000 BTU (12k) 501 – 750 sq ft 18,000 BTU (18k) 751 – 1,000 sq ft 24,000 BTU (24k) 1,001 – 1,500 sq ft 36,000 BTU (36k) Extended Installation Options Need a longer line set? No problem. MRCOOL DIY Direct offers pre-charged 16’, 25’, 35’, and 50’ line set options with control wire and unions for flexible installation in any home layout. Warranty Coverage 7-Year Compressor Warranty 5-Year Parts Warranty Limited Lifetime Tech Support from MRCOOL DIY Direct Invest in reliable, energy-efficient comfort today with the 5th Gen MRCOOL DIY Single Zone Mini Split — only at MRCOOL DIY Direct, America’s most trusted HVAC dealer.
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