DIY Hyper Heat

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MRCOOL DIY Hyper Heat 5th Generation mini split systems are built for real winters, delivering reliable heating down to -22°F with true DIY installation. This collection includes 12K and 18K single-zone Hyper Heat systems, wall-mount bundles, and ceiling cassette options—perfect for garages, bonus rooms, bedrooms, offices, shops, cabins, and rentals. With pre-charged R-454B Quick Connect® line sets, smart WiFi control, and Gold Fin® corrosion protection, these systems offer contractor-grade performance without the installer cost.