The MRCOOL® Advantage 5th Generation 12,000 BTU Mini-Split Heat Pump delivers efficient, quiet heating and cooling for rooms up to 550 sq. ft. This ductless system features a WiFi-enabled air handler, a rugged outdoor condenser with corrosion-resistant Gold Fin® coating, and environmentally friendly R-454B refrigerant for reduced global warming impact.
Rated at 21.2 SEER2 and 8.7 HSPF2-4, this system offers year-round comfort with low energy consumption. Use the MRCOOL® SmartHVAC app or voice commands via Amazon Alexa and Google Assistant to control settings remotely. The included remote features Follow Me® functionality to adjust temperature based on your location.
With quiet operation, timer mode, and refrigerant leak detection, the system supports modern comfort and safety expectations. Installation by a licensed HVAC technician is required for optimal performance and warranty eligibility.
Key Features
Smart Control Integration – Built-in WiFi supports Amazon Alexa, Google Assistant, and the MRCOOL® SmartHVAC app.
High Efficiency – 21.2 SEER2 and 8.7 HSPF2-4 ensure effective energy savings for year-round use.
Follow Me® Function – Remote control senses temperature at your location for personalized comfort.
Quiet Operation – Indoor noise levels as low as 17.5 dB(A) provide whisper-quiet performance.
Eco-Friendly Refrigerant – R-454B refrigerant reduces GWP by approximately 80% compared to R-410A.
Gold Fin® Condenser Protection – Corrosion-resistant coating ideal for coastal or humid climates.
Low Ambient Operation – Cools in temps as low as 5°F and heats down to 5°F.
Built-In Diagnostics – Includes timer mode and refrigerant leak detection for safety and energy efficiency.
Professional Installation Required – Must be installed by a licensed HVAC contractor.
Warranty Coverage – 1-year parts and remote, 2-year compressor, with optional lifetime coverage via MRCOOL® Care.Specifications
The appropriate BTU rating depends on the size of the space you need to heat or cool.
A higher BTU indicates greater heating and cooling capacity, allowing the air handler to effectively condition larger areas.
Air Handler BTU
Coverage Area/Room Size(Sq.Ft.)*
9K
Up to 400 Sq.Ft.
12K
Up to 550 Sq.Ft.
18K
Up to 800 Sq.Ft.
24K
Up to 1050 Sq.Ft.
36K
Up to 1,550 Sq.Ft.
*Ceiling height, insulation quality, and local climate can all affect the actual coverage area. For instance, an uninsulated space will need more BTUs to maintain comfort compared to a well-insulated room.
No, this system is not DIY-installable. Installation must be performed by a licensed HVAC technician to ensure safe operation, compliance with local codes, and full warranty coverage.
What room size is the 12,000 BTU system best suited for?
The MRCOOL® Advantage 12K system is designed to efficiently heat and cool spaces up to 500–550 sq. ft. It’s ideal for bedrooms, living rooms, offices, or medium-sized open areas. For larger spaces, refer to the BTU size chart to select the right capacity.
What type of refrigerant does this unit use?
This unit comes pre-charged with R-454B refrigerant, which provides approximately 80% lower Global Warming Potential (GWP) than older R-410A systems. It reduces environmental impact while maintaining reliable heating and cooling performance.