MRCOOL® DIY® Hyper Heat 5th Generation 12,000 BTU 23.5 SEER2 Single Zone Mini Split Air Conditioner & Heat Pump System with 25 ft Pre-Charged QuickConnect® Line Set- 230V R-454B- DIYHH-12-HP-WM-230D25-O

Meet the First Ever DIY Hyper Heat Mini-Split System from MRCOOL® Product Description Upgrade your home with one of the easiest and most efficient ductless HVAC systems available. The MRCOOL® DIY® Hyper Heat 5th Generation 12,000 BTU Single Zone Mini Split System is designed specifically for homeowners who want professional-level comfort without paying for professional installation. This complete system pairs the 12,000 BTU Hyper Heat outdoor condenser with the 12,000 BTU wall-mounted air handler, providing year-round heating and cooling for rooms up to 550 square feet. The included 25-foot factory pre-charged QuickConnect® line set allows installation without vacuum pumps, refrigerant gauges, or specialized HVAC tools, making it one of the most installer-friendly mini split systems on the market. Powered by environmentally friendly R-454B refrigerant, this fifth-generation Hyper Heat system delivers exceptional energy efficiency with an impressive 23.5 SEER2, helping lower monthly energy costs while providing outstanding comfort in every season. Unlike standard heat pumps that struggle during freezing temperatures, the MRCOOL DIY Hyper Heat system continues operating in outdoor temperatures as low as -22°F, making it an excellent heating solution for colder climates. The included DIYPRO® cable eliminates the need for traditional electrical conduit while providing additional protection against weather, sunlight, lawn equipment, rodents, and everyday wear. Control your comfort from virtually anywhere using the included wireless remote, the MRCOOL SmartHVAC App, or hands-free voice commands through Amazon Alexa and Google Assistant. Whether you’re upgrading a bedroom, garage, workshop, office, bonus room, addition, basement, or cabin, this DIY mini split system delivers professional-quality comfort with homeowner-friendly installation. When you purchase from MRCOOL DIRECT, you’re buying from MRCOOL Most Trusted authorized online retailer dedicated exclusively to genuine MRCOOL products, expert customer support, and fast nationwide shipping. Why Homeowners Choose the DIY Hyper Heat Series ✔ True DIY installation ✔ Factory pre-charged 25 ft QuickConnect® line set included ✔ No vacuum pump required ✔ No refrigerant handling ✔ Hyper Heat technology heats down to -22°F ✔ High-efficiency 23.5 SEER2 inverter technology ✔ WiFi enabled out of the box ✔ SmartHVAC App compatible ✔ Amazon Alexa compatible ✔ Google Assistant compatible ✔ Quiet operation ✔ Gold Fin® corrosion-resistant coating ✔ ENERGY STAR® Certified ✔ AHRI Certified ✔ ETL Listed ✔ Excellent for cold climates What’s Included DIY Hyper Heat 12,000 BTU Outdoor Condenser 12,000 BTU Wall Mounted Air Handler 25 ft Factory Pre-Charged QuickConnect® Line Set DIYPRO® Communication Cable Wireless Remote Control Installation Accessories User Manuals Perfect For Bedrooms Living Rooms Home Offices Garages Workshops Cabins Finished Basements Home Additions Apartments Studios Sunrooms Recommended coverage: 350–550 sq. ft. Hyper Heat Performance Unlike conventional mini splits that lose heating performance in freezing weather, the MRCOOL DIY Hyper Heat system is engineered for extreme winter conditions. Operating temperature: Cooling down to -22°F Heating down to -22°F Perfect for homeowners living in colder climates where reliable winter heating is essential. Smart Home Ready Control your comfort your way. Compatible with: SmartHVAC App Apple iPhone Android Amazon Alexa Google Assistant Features include: Temperature adjustments Scheduling Sleep Mode Fan Speed Follow Me® Mode Energy monitoring Vacation settings Energy Efficient Comfort Efficiency Ratings 23.5 SEER2 12.8 EER2 HSPF2-4: 10 ENERGY STAR® Certified DC Inverter Technology High efficiency means: Lower electric bills Faster heating Faster cooling Better humidity control Quieter operation DIY Installation Advantages The MRCOOL DIY Series revolutionized ductless HVAC installation. Unlike traditional mini split systems, installation does not require: Vacuum pump Refrigerant gauges Nitrogen purge EPA refrigerant certification Specialized HVAC tools The included factory pre-charged QuickConnect® line set significantly simplifies installation for qualified homeowners following the installation manual and local building codes. Gold Fin® Protection The outdoor condenser features Gold Fin® anti-corrosion technology which helps protect against: Salt air Rain Snow Humidity Coastal environments Corrosion Designed for years of dependable operation. Technical Specifications Cooling Capacity 12,000 BTU Heating Capacity 12,000 BTU Coverage Up to 550 sq. ft. Voltage 208-230V Phase Single Phase SEER2 23.5 EER2 12.8 HSPF2-4 10 Refrigerant R-454B Line Set Included 25 ft Maximum Line Set Length 75 ft Liquid Line 1/4” Suction Line 3/8” Maximum Fuse Breaker 15 Amp Minimum Circuit Ampacity 15 Amp Outdoor Noise 56.5 dBA Outdoor Dimensions 31.69” W × 21.81” H × 12.99” D Outdoor Weight 72.31 lbs Indoor Dimensions 31.57” W × 11.63” H × 7.44” D Indoor Weight 24.47 lbs Warranty Included: 7-Year Compressor Warranty 5-Year Parts Warranty Warranty options may apply with MRCOOL® Care registration. FREQUENTLY ASKED QUESTIONS About the MRCOOL DIY Hyper Heat Singe Zone 12,000 BTU Q: Do I need an HVAC tech to install this? No. This is a true DIY system. The line set is factory-sealed and pre-charged — no vacuum pump required. Q: Can I mount the air handler myself? Yes. Mounting bracket + hardware included. Q: Does it heat well in winter? Yes. This is Hyper Heat — maintains performance to -22°F. Q: Do I need a separate breaker for the air handler? No. The outdoor 230V circuit powers the indoor unit. Q: Can I expand this later? This is a single-zone system. If you want multiple rooms → choose a MRCOOL DIY Multi-Zone. Q: Does this system require HVAC gauges? No. Q: Does the refrigerant come pre-installed? Yes. The included QuickConnect® line set is factory pre-charged with R-454B refrigerant. Q: What size room does this cool? Approximately 350–550 square feet depending on insulation, ceiling height, windows, and climate. Q: Does Hyper Heat work in freezing temperatures? Yes.The Hyper Heat condenser can continue providing heat in outdoor temperatures down to -22°F. Q: Can I control it from my phone? Yes.The system works with the SmartHVAC App for iPhone and Android devices. Q: Does it work with Alexa? Yes.It supports Amazon Alexa and Google Assistant. Q: Where can I get technical support? You get direct support from MRCOOL Direct — USA’s #1 trusted MRCOOL dealer. WHY BUY FROM MRCOOL DIRECT We are America’s #1 Most Trusted MRCOOL Dealer. You receive: Genuine MRCOOL Products Fast Nationwide Shipping Expert Product Support DIY Installation Guidance Genuine Replacement Parts Secure Online Ordering Authorized MRCOOL Retailer BUY DIRECT! Have questions? Call us at 615-553-8118 We make sure you order exactly what your space needs.