MRCOOL DIY Mini Split 4th Gen 18k BTU: Energy Star Efficient Cooling

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Updated on . 4 minute read

The latest MRCOOL DIY Mini Split 4th Gen 18k BTU features Energy Star certification, making it an efficient solution for heating and cooling large spaces up to 700-900 sq ft. It offers a SEER rating of 22.7, easy installation, smart home compatibility, and robust warranties.

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    Are you ready to transform how you cool and heat your home? Whether it’s the heat of summer or the chill of winter, the new 4th Gen MRCOOL DIY Mini Split System with its 18k BTU and Energy Star certification is here to do just that. This system not only simplifies the installation process but also brings cutting-edge efficiency to your living spaces.

    It is perfect for large areas between 700 to 900 square feet, making it a perfect choice for larger rooms or areas with high cooling demands. It also boasts a SEER efficiency rating of 22.7, positioning it as one of the most cost-effective air conditioning solutions available today.

    Key Features of the MRCOOL DIY 4th Gen Mini Split

    Streamlined Installation and Enhanced Efficiency

    Discover the innovation behind the MRCOOL DIY 4th Generation Mini Split:

    • Pre-Charged Quick Connect Line Set: This system is designed for hassle-free installation, eliminating the need for manual charging and special tools, which allows for an easy set-up. Also, for its electrical requirements, single zone 18k model requires a 208-230V/60Hz, 1Ph power supply. Minimum Circuit Ampacity is 18 Amps with a Maximum Fuse of 30 Amps.
    • Energy Star Certified: Achieving energy efficiency with SEER ratings that exceed the norms, this unit is ideal for reducing energy consumption while maintaining optimal cooling and heating

    Advanced Features for Optimal Home Climate Management

    The 4th Gen MRCOOL Mini Split is packed with features designed to enhance your comfort:

    • Multiple Operating Modes: From sleep mode for overnight comfort to dry mode for reducing humidity, this system adapts to all your comfort needs.
    • Smart HVAC Control: Fully integrated with Google Assistant and Amazon Alexa, control your home’s climate from anywhere using the MRCOOL Smart HVAC app.

    Durable, Reliable, and Built to Last

    With a focus on durability and reliability, the 4th Gen MRCOOL Mini Split ensures long-term performance:

    • Gold Fin Condenser Coating: This feature provides superior protection against corrosion, significantly extending the lifespan of the unit.
    • Heat Pump Technology: Delivers efficient cooling and heating, using less energy than traditional systems.
    • Leak Detection: Automatically detects system leaks, protecting your home and extending the unit's lifespan.
    • Comprehensive Warranties: Enjoy peace of mind with MRCOOL 4th Gen DIY optional LIMITED LIFETIME compressor warranty*, a 7-year compressor replacement* warranty, and a standard 5-year parts warranty for the original registered owner.


    Choosing the MRCOOL DIY 4th Gen Mini Split 18K BTU means opting for an air conditioning system that offers ease, efficiency, and innovation. Whether you’re looking to upgrade your cooling system or need a reliable solution for heating, this mini split is designed to meet your needs effectively. With its user-friendly installation and robust feature set, the MRCOOL DIY 4th Gen Mini Split stands out as the smart choice for homeowners who value comfort and sustainability.

    Transform your home into a haven of comfort with the MRCOOL DIY 4th Gen Mini Split—where advanced technology meets everyday convenience.


    Q: Does a higher SEER cool better?

    A: Absolutely. Higher SEER ratings indicate better energy efficiency, which means the air conditioner can cool more effectively at lower operational costs.

    Q: How much does it cost if I buy a 18,000 BTU mini split?

    A: The average cost ranges from around 2200-2400 USD. For an additional 5% discount and FREE Shipping, visit the top MRCOOL dealer to purchase now.

    Q: Can I install a MRCOOL mini split system myself?

    A: Yes, MRCOOL’s DIY mini split systems are specifically designed for individuals without HVAC experience, featuring easy installation with pre-charged line sets and detailed instructions.

    Q: Are MRCOOL mini split energy efficient?

    A: Yes, MRCOOL mini split are considered highly energy efficient. They utilize inverter technology, allowing the unit to adjust its speed and output to precisely match the cooling or heating demands of the space. This modulation avoids the energy-intensive on-and-off cycling typical in traditional air conditioners, leading to substantial energy savings.

    Q: What size room will an 18,000 BTU cool?

    A: An 18,000 BTU mini split can effectively cool an area of approximately 700-900 square feet. However, this can vary based on factors such as ceiling height (assuming 8 ft), insulation quality, and window quantity in the room.

    Q: How much electricity does an 18,000 BTU use?

    A: The electricity usage of an 18,000 BTU mini split varies by model and usage habits, but generally, it consumes about 1.5-2.5 kW per hour.

    Q: How much does it cost to run an 18,000 BTU air conditioner?

    A: The cost of running an 18,000 BTU air conditioner depends on factors like local electricity rates, frequency of use, and the thermostat setting. Typically, running this air conditioner for 8 hours a day may cost between $0.80 to $1.60 daily.

    Q: Do you have to pull a vacuum on a MRCOOL mini split?

    A: No, charging or vacuuming is not required for MRCOOL mini split, which simplifies the installation process, making it ideal for DIY enthusiasts.

    Q: Who owns the MRCOOL company?

    A: Magnus Cool is the founder and owner of MRCOOL serving as the driving force behind the company.

    Q: What is the difference between Goodman and MRCOOL mini split systems?

    A: While both Goodman and MRCOOL offer mini split systems featuring both indoor and outdoor units, MRCOOL systems generally offer higher energy efficiency, can operate in colder temperatures, and include more advanced technological features.

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