Skip to content

Mini Split Placement: Where Should You Install Your Mini Split?

where to install mini split

Strategic placement of mini split units ensures optimal performance and longevity. Learn key tips for efficient and effective installation.


Key Takeaways

  • Install indoor units at least 7 feet high for better airflow and drainage.
  • Outdoor units need stable support and proper clearance to function efficiently.
  • Avoid direct sunlight, heat sources, and obstruction to airflow for both units.
  • Ensure easy access to filters and louvers for maintenance.

Indoor Unit Placement

Wall Placement and Height

Secure the unit on a solid surface to minimize vibration and noise. Mount wall units at least 7 feet from the ground for proper airflow and drainage. Keep units away from direct sunlight and doors to avoid interference with performance. Refer to the manufacturer’s clearance requirements for optimal installation.

Wall placement illustration

Proximity to Furniture and Appliances

Maintain at least 3 feet of clearance from electrical devices like TVs and computers. Keep units away from flammable objects and heat sources.

Ease of Maintenance

Install units at a height that allows easy access to filters and louvers.

Aesthetic Considerations

Choose inconspicuous locations to blend the unit with room decor while ensuring proper height.


Outdoor Unit Placement

Stable Ground Support

Use a concrete pad or a pre-engineered condenser pad to support the unit. Ensure the pad is level to prevent connection issues and shifting.

Outdoor unit support example

Airflow Requirements

Place units in areas with unobstructed airflow for both inlet and outlet. Avoid exposure to heat, steam, and other air conditioning unit discharges. Maintain clearances: 28 inches from the front, 12 inches from the rear, and 40 inches above.

Airflow clearance diagram

Weather Considerations

Protect outdoor units from strong winds with barriers made of sturdy materials like concrete. Ensure units are elevated above potential flood levels and shielded from heavy rain and snow.

Wind and Snow

Use anti-vibration dampers in high-wind areas to secure the unit. Mount units higher than expected snowfall to avoid obstruction. Install hoods or covers 40 inches above the unit to protect from heavy snowfall.

Snow protection example


General Tips for Installation

Proper Insulation

Insulate refrigerant piping with closed-cell insulation to prevent heat loss or gain. Use pre-insulated line sets for convenience and effectiveness. Protect outdoor insulation with weather-resistant materials like PVC or aluminum barriers.

Insulation example

Clearances and Accessibility

Ensure units are easily accessible for regular maintenance and servicing. Avoid minimum clearance distances to maintain performance and prevent overheating.


Following these guidelines ensures your mini split system operates efficiently and reliably for years to come.

Mickey Luongo

Mickey is the resident heating and air conditioning expert with over 15 years of experience in the industry.

3 thoughts on “Mini Split Placement: Where Should You Install Your Mini Split?”

  1. Shabeer Iqbal says:

    Hi Mickey,
    A great guide to split AC installs thanks, just one query..
    Most indoor units are mounted above the outdoor units, but when the outdoor unit has to be mounted on the roof then the drainage can be an issue and does anything else have to be added to due to the outdoor unit being higher than the inside unit ?

    1. Mickey Luongo says:

      The placement of the outdoor unit does not impact drainage at all. The indoor unit still needs to either drain with gravity or use a condensate pump. The drain line does not need to run with the line set back to the outdoor unit.

  2. Connie Craver says:

    I live in neighborhood with really strict HOA rules on looks. This translates can’t be an eyesore-can’t be seen from street. Mini-Split doesn’t sound HOA friendly. Any tips on disguising? Condenser is much larger than I thought.

Leave a Reply

Your email address will not be published. Required fields are marked *