How to Make a Mini Split Stand: A Comprehensive DIY Guide

Building a sturdy and reliable mini split stand is essential for ensuring the proper installation and long-term performance of your ductless air conditioning system. This comprehensive guide will walk you through the step-by-step process of constructing a mini split stand, providing advanced hands-on details and technical specifications to help you create a custom solution tailored to your specific needs.

Design the Stand

The first step in building a mini split stand is to determine the appropriate dimensions based on the size of your mini split unit. A common height for a mini split stand is around 4 feet, but this can vary depending on the specific requirements of your installation. The stand should be wide and deep enough to provide stability and support, with a recommended base size of 24×24 inches for most mini split units.

When designing the stand, consider the following factors:

  • Unit Size: Measure the dimensions of your mini split unit, including the width, depth, and height, to ensure the stand can accommodate it.
  • Clearance: Ensure there is adequate clearance around the unit for airflow and maintenance access.
  • Weight Capacity: Calculate the weight of the mini split unit and factor in a safety margin to ensure the stand can support the load.
  • Aesthetics: Choose a design that complements the overall appearance of your outdoor space.

Choose Materials

how to make a mini split standImage source: Flickr

For the construction of the mini split stand, it is recommended to use pressure-treated lumber to ensure durability and resistance to weather elements. The following materials are typically used:

  • Legs: 4×4 pressure-treated posts
  • Frame: 2×4 pressure-treated lumber
  • Braces: 2×4 pressure-treated lumber

The use of pressure-treated lumber is crucial to protect the stand from the effects of moisture, UV exposure, and potential insect or fungal damage, ensuring the longevity of your mini split installation.

Cut and Assemble the Legs

Begin by cutting the 4×4 posts to the desired height for your stand. For a 4-foot stand, cut each post to 48 inches. Attach a 2×4 brace at the midpoint of each leg using screws or bolts. This midpoint brace will provide additional stability and prevent the legs from bowing or twisting under the weight of the mini split unit.

When cutting the posts, ensure that the cuts are clean and square to ensure a proper fit and alignment of the frame. Use a miter saw or circular saw with a guide to achieve precise and consistent cuts.

Assemble the Frame

Next, cut two 2×4 boards to the desired width of the stand, typically 24 inches. Attach these boards to the top of the legs using screws or bolts, ensuring that the frame is level and square. This will form the base of the stand.

To further strengthen the frame, you can add additional 2×4 boards to the sides or bottom of the frame, creating a more robust and stable structure.

Add Diagonal Braces

To prevent the stand from swaying or becoming unstable, it is essential to add diagonal braces. Cut two 2×4 boards diagonally, with the length determined by the dimensions of your frame. These diagonal braces should connect the opposite corners of the frame, creating an “X” pattern.

Secure the diagonal braces to the frame using screws or bolts, ensuring a tight and secure connection. This additional bracing will significantly improve the overall stability of the mini split stand.

Secure the Mini Split Unit

Once the stand is assembled, carefully place the mini split unit on top of the frame. Secure the unit to the stand using lag screws or bolts, ensuring that it is level and stable. This step is crucial to prevent any movement or shifting of the unit, which could potentially cause damage or affect its performance.

Seal and Protect

To protect the mini split stand from the elements, apply a weather-resistant sealant or paint to the entire structure. This step will help prevent the wood from weathering, cracking, or rotting over time, ensuring the longevity of your mini split installation.

Consider using a high-quality exterior wood sealant or paint that is specifically formulated for outdoor use. Apply the sealant or paint in a well-ventilated area, following the manufacturer’s instructions for proper application and drying times.

Technical Specifications and Measurements

Here are the critical details and measurements for a typical 4-foot mini split stand:

Specification Measurement
Leg Height 48 inches
Frame Width 24 inches
Frame Depth 24 inches
Leg Brace Height 24 inches (halfway up the leg)
Diagonal Brace Length Determined by the frame dimensions

Remember, these measurements are a general guideline, and you may need to adjust them based on the specific requirements of your mini split unit and installation location.

Factors to Consider

When building a mini split stand, keep the following factors in mind:

  1. Weight Capacity: Ensure that the stand can support the weight of your mini split unit, which typically ranges from 50 to 150 pounds.
  2. Stability: The stand should be sturdy and not sway or tip over easily. Use diagonal braces and a wide base to enhance the stability of the structure.
  3. Weather Resistance: Utilize pressure-treated lumber and apply a weather-resistant sealant or paint to protect the stand from the elements, such as rain, sun exposure, and potential insect or fungal damage.


For further information and guidance on building a mini split stand, consider the following resources:

  1. Building a Storage Shed for DIY Ductless Mini Split – MRCOOL
  2. Installing a Mini-Split By Myself ― The Stand and Compressor Unit
  3. Building a Base for Split AC Compressor –

By following the detailed instructions and technical specifications provided in this guide, you can confidently build a sturdy and reliable mini split stand that will support your ductless air conditioning system for years to come.