MRCOOL DIY 5th Gen Hyper Heat 18K BTU 230V Single Zone Condenser w/ 25ft Install Kit DIYHH-18-HP-C-230D25-O
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Experience year-round comfort with the MRCOOL® DIY® 18k BTU 208/230V Hyper Heat 21.2 SEER Ductless Heat Pump Single Zone Mini Split Condenser—a high-performance solution designed for easy installation and exceptional performance in extreme temperatures. Built for spaces up to 800 square feet, this Hyper Heat condenser maintains efficient operation down to -22°F, making it the ideal choice for cold-climate homeowners who want powerful, reliable heating without professional installation. The included 25-foot QuickConnect® line set is pre-charged with R-454B refrigerant, and the DIYPro® armored cable eliminates the need for electrical conduit for a cleaner, more durable install.
Key Features
- Hyper Heat performance rated down to -22°F ambient — ideal for cold climates
- 21.2 SEER2 high-efficiency inverter compressor for year-round energy savings
- R-454B eco-friendly refrigerant — lower Global Warming Potential than R-410A
- Includes 25ft pre-charged QuickConnect® line set — no vacuum pump required
- DIYPro® armored cable included — eliminates need for electrical conduit
- Gold Fin® condenser coating for superior corrosion resistance in coastal environments
- Compatible with wall-mounted air handlers and OuttaSight® ceiling cassettes
- SmartHVAC app control with Google Assistant and Amazon Alexa support
- Follow Me® remote function for personalized comfort based on remote location
- Dry Mode for humidity reduction and condensation control
- ENERGY STAR® certified | AHRI certified | ETL listed | Intertek listed 5031495
Technical Specifications
| SKU / Model | DIYHH-18-HP-C-230D25-O |
| Series | DIY® Hyper Heat 5th Generation |
| Cooling Capacity | 18,000 BTU |
| Heating Capacity | 18,000 BTU |
| SEER2 | 21.2 |
| EER2 | 12.5 |
| HSPF2 (Region IV) | 11.0 |
| HSPF2 (Region V) | 8.5 |
| Coverage Area | Up to 800 sq. ft. |
| Voltage | 208/230V, 1-Phase, 60Hz |
| Max Fuse / Breaker | 25A |
| Min Circuit Ampacity | 19A |
| Refrigerant | R-454B |
| Refrigerant Charge | 52.21 oz |
| Lineset Included | Yes — 25ft pre-charged QuickConnect® |
| Max Lineset Length | 75 ft. |
| Liquid Line Size | 1/4 in. |
| Suction Line Size | 1/2 in. |
| Min Ambient Temp (Cooling / Heating) | -22°F |
| Sound Level | 58 dBA |
| Compressor Type | Rotary Inverter |
| Metering Device | EEV |
| Net Weight | 99.87 lbs. |
| Net Dimensions (D x H x W) | 13.46 in. x 26.5 in. x 35.04 in. |
| Gross Weight | 120.15 lbs. |
| GTIN / Barcode | 00840255588096 |
| Color | White |
Product Documentation
- MRCOOL DIY Hyper Heat 5th Gen Product Brochure (PDF)
- MRCOOL DIY Hyper Heat 5th Gen Installation and Owner Manual (PDF)
- MRCOOL DIY Hyper Heat 5th Gen Performance Specifications (PDF)
- MRCOOL DIY 5th Gen Warranty Document (PDF)
- MRCOOL DIY Hyper Heat 18K AHRI Certificates (PDF)
- MRCOOL DIY Hyper Heat 18K EnergyGuide Certificate (PDF)