Sarah Mitchell

Installing a ductless mini split air conditioner is a practical solution for cooling down spaces like a hot garage. Here’s a step-by-step guide to help you through the process.

1. Choose the Location: Start by selecting a suitable wall for mounting the indoor unit. Ensure it’s an interior wall with enough clearance around it for airflow.


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2. Mount the Indoor Unit: Mark the location for the mounting bracket. Drill holes for the bracket and a larger hole for the refrigerant lines, drain line, and electrical wiring. Secure the bracket to the wall using masonry screws.

3. Drill and Install: Use a rotary hammer drill to create a clean hole through the wall. This ensures a smooth passage for the lines and prevents damage to the wall exterior.

4. Connect the Lines: Extend the drain line with PVC pipe and secure it with a C-clamp. Carefully extend and connect the refrigerant lines using compression fittings and a flaring tool. Run the electrical wiring between the indoor and outdoor units.

5. Outdoor Unit Setup: Mount the outdoor unit in a stable location. Insulate the refrigerant lines to maintain temperature efficiency. Connect the high-voltage wiring, ensuring it’s protected by weather-tight conduit for safety.

6. Test and Finalize Connections: Test all connections for leaks using nitrogen. Most ductless mini split air conditioners come pre-charged with refrigerant, simplifying the process. Connect the electrical components and ensure everything is secure.

7. Power Up and Enjoy: Switch on the power and test the system. Your ductless mini split air conditioner should now effectively cool your space, providing relief from the heat.

Following this guide will help ensure a smooth and successful installation, making your environment more comfortable and enjoyable.

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Most ductless mini split air conditioners come pre-charged with refrigerant.

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