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    Value
    Top Pick
    IRA Eligible
    DIY Option

    MRCOOL DIY 4th Generation Mini Split

    Model Number: DIY-12-HP-WM-230C25

    The king of DIY mini splits. MRCOOL's 4th Gen features pre-charged line sets with quick-connect fittings that require no HVAC tools or vacuum pump. True homeowner installation in under 4 hours.

    22 SEER2
    10 HSPF2
    1 Zone
    3 Ton

    Technical Specifications

    22

    SEER2

    10

    HSPF2

    1

    Zone

    Capacity12k – 36k BTU

    Noise Levels

    Indoor: 19 dB
    Outdoor: 48 dB
    Wi-Fi
    Smart Home
    Installed Price$1,500 – $2,800
    IRA Tax Credit-$2,000
    Warranty7 years

    Key Features

    Pre-charged quick-connect line sets

    No vacuum pump needed

    No HVAC tools required

    Built-in Wi-Fi

    SmartHVAC app control

    Pros & Cons

    Pros

    • True DIY install no HVAC tools needed
    • Save $2,000-4,000 on installation
    • Built-in Wi-Fi and app
    • Pre-charged line sets

    Cons

    • Not cold climate rated
    • DIY voids some local permits
    • Lower efficiency than pro-install units
    • 7-year warranty

    Best For

    DIY homeowners wanting to skip professional installation

    Warranty Snapshot

    Compressor: 7 years

    Parts: 7 years

    Register equipment with the manufacturer after installation to preserve coverage. We handle registration on Homets installs.

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    Frequently Asked Questions

    Ready to Install the DIY 4th Gen?

    Get a free, no-obligation quote for professional mini-split installation by NATE-certified technicians serving Nassau County. You may qualify for a $2,000 federal tax credit!

    Get Your Free QuoteCall (516) 345-3911