Achieving dependable indoor comfort can be difficult when traditional HVAC systems require complex installation or extensive ductwork. The DIY-12-HP-C-115D25-O condenser introduces a simplified ductless option that supports balanced temperature control while reducing setup challenges. Its thoughtful design makes it well suited for residential rooms, offices, and converted living spaces seeking efficient climate management.
The MRCOOL DIY 5th Gen series simplifies access to advanced ductless technology for residential and light commercial spaces. Designed to avoid the complexity of traditional ducted systems, it allows a more streamlined installation with compatible components. When paired with the appropriate indoor air handler, it forms a single-zone system suitable for areas up to about 550 square feet.
Performance and efficiency are central to this unit’s design. The MRCOOL DIY-12-HP-C-115D25-O condenser delivers 12,000 BTU with efficiency ratings up to 23.5 SEER2 and 12.5 EER2. Its DC inverter compressor adjusts speed based on demand to maintain stable temperatures while reducing energy use and frequent cycling. The MRCOOL 5th Gen 12k BTU condenser uses R-454B refrigerant for improved environmental efficiency, while the Gold Fin® coated coil helps resist corrosion and weather exposure. Operating at about 54 dB, the unit maintains quiet outdoor performance suitable for residential spaces.
Convenience and flexible installation define the system. With a compatible indoor unit, it connects to SmartHVAC for app or voice control. A pre-charged 25-foot QuickConnect® line set simplifies installation, while Follow Me maintains comfort using nearby temperature readings.
A recent buyer shared,““We set up a small office in our garage, but it never felt comfortable for long. After installing this system, the space stays much more manageable, the adjusting the settings from our phone is very convenient and the installation turned out to be much easier than we thought.””
Experiences like this highlight the system’s practical design. With simple installation, smart connectivity, and reliable temperature control, it offers a convenient solution where traditional HVAC systems may not be practical.
The MRCOOL DIY 5th Gen condenser delivers efficient performance while maintaining consistent indoor comfort and simple, reliable control.
Product Highlights
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12,000 BTU heating and cooling capacity
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Suitable for single rooms or spaces up to about 550 sq. ft.
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High 23.5 SEER2 efficiency
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Helps reduce energy consumption and operating costs
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DC inverter compressor
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Adjusts performance automatically for consistent comfort
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Gold Fin® condenser coating
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Improves corrosion resistance and long-term durability
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R-454B refrigerant
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Lower global warming potential refrigerant
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SmartHVAC compatibility
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Allows remote control through mobile devices
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Wi-Fi enabled system
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Supports smartphone and smart assistant integration
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DIY QuickConnect® line set
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Simplifies installation without vacuuming
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Quiet outdoor operation
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Maintains comfort with reduced noise levels
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Single-zone design
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Focused heating and cooling for targeted spaces
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Loyalty Program
