# Can You Put a Split System on an Internal Wall?
When considering the installation of a split system air conditioner, many homeowners ponder whether it can be placed on an internal wall. The answer isn't straightforward, as it depends on various factors, including the structure of your home and the specific requirements of the air conditioning system. This guide will walk you through the considerations and steps involved in [installing a split system](https://tempguides.com/air-conditioner/how-to-drain-a-mini-split-on-an-interior-wall/) on an internal wall.


## What are Split System Air Conditioners?
Split system air conditioners are composed of two main components: the indoor unit, which is installed inside the house, and the outdoor unit, which is placed outside. These systems are popular for their efficiency and ability to cool or heat specific areas of a home. They work by transferring heat between the indoor and outdoor units using refrigerant, making them effective for climate control.

## Why Consider an Internal Wall Installation?
Installing a split system on an internal wall might be necessary or desirable for several reasons:

1. **Aesthetic Considerations:** Some homeowners prefer not to disrupt the exterior aesthetics of their home.
1. **Space Limitations:** External walls may already be occupied by windows, doors, or other installations.
1. **Structural Preferences:** An internal wall installation can sometimes provide better air distribution within certain room layouts.

## Factors to Consider Before Installation

### **Structural Integrity**
The internal wall must be strong enough to support the weight of the indoor unit. This often means reinforcing the wall or choosing a wall with existing structural support. The indoor unit of a split system air conditioner is typically lighter than traditional window units but still requires a solid anchor point to prevent damage or dislodgment.

### **Proximity to the Outdoor Unit**
A key challenge with internal wall installations is the need to run refrigerant pipes and electrical wiring to the outdoor unit. This often requires more extensive work compared to external wall installations, including creating channels or conduits to conceal the pipes. The distance between the indoor and outdoor units can affect the efficiency of the system, so it's essential to plan the placement carefully.

### **Drainage Solutions**
Split system air conditioners generate condensation that needs to be drained away. An internal wall installation may require a more complex drainage system to ensure that water is effectively directed outside the house without causing damage or leaks. This might involve installing a condensate pump or routing the drain line to a suitable external discharge point.

## Step-by-Step Guide to Installing a Split System on an Internal Wall

### **Step 1: Choose the Right Wall**
Select an internal wall that meets the structural requirements and is centrally located for optimal air distribution. Ensure it is free from obstacles and can accommodate the unit's size and weight. The wall should also be free of any electrical wiring or plumbing that could be disrupted during installation.

### **Step 2: Plan the Pipework Route**
Determine the most efficient route for the refrigerant pipes and electrical wiring to reach the outdoor unit. This may involve routing through the ceiling, under the floor, or through other walls. Careful planning can minimize the need for extensive modifications and ensure a clean, professional-looking installation.

### **Step 3: Install Mounting Bracket**
Secure a sturdy mounting bracket to the internal wall, ensuring it is level and properly anchored to support the indoor unit. The bracket should be attached to studs or other solid structural elements to provide a secure base for the unit.

### **Step 4: Drill Access Holes**
Drill necessary access holes for the refrigerant pipes, electrical wiring, and drainage pipe. Ensure these holes are properly sealed to prevent air leaks and maintain insulation. The holes should be of adequate size to accommodate the pipes and wires without causing strain or kinks.

### **Step 5: Connect Indoor and Outdoor Units**
Run the refrigerant pipes and electrical wiring from the indoor unit through the access holes to the outdoor unit. Connect the drainage pipe and ensure it slopes downward to facilitate proper drainage. All connections should be made following the manufacturer's instructions to ensure optimal performance and safety.

### **Step 6: Test the System**
Once all connections are made, test the system to ensure it operates correctly. Check for any leaks in the refrigerant lines, ensure proper drainage, and verify that the electrical connections are secure. Run the system through a full cycle to confirm that it [maintains the desired temperature and operates ](https://www.total-environmental.co.uk/maintaining-a-temperature-and-humidity-controlled-room/)without any issues.

## Challenges and Solutions

### **Refrigerant Line Length**
Exceeding the maximum recommended length for refrigerant lines can reduce the efficiency of the system. It's crucial to follow the manufacturer’s guidelines to maintain performance. If the distance between the indoor and outdoor units is too great, it may be necessary to use additional refrigerant or specialized components to ensure proper operation.

### **Noise Considerations**
Running pipes and wiring through internal walls can sometimes result in noise transmission. Insulate the pipes and use sound-dampening materials to minimize this issue. Proper installation techniques, such as securing the pipes to prevent movement, can also help reduce noise.

### **Aesthetic Integration**
Concealing pipes and wiring can be a challenge. Use decorative conduits or strategically route the lines to maintain a clean appearance. Painting the conduits to match the wall color or hiding them behind furniture can help maintain the room's aesthetic appeal.

## Benefits of Internal Wall Installation

### **Improved Aesthetics**
An internal wall installation can keep the exterior of your home uncluttered and visually appealing. This can be particularly important in homes with historical or architectural significance where maintaining the original appearance is a priority.

### **Centralized Air Distribution**
Placing the indoor unit on an internal wall can help distribute conditioned air more evenly throughout the room. This can enhance comfort and efficiency, ensuring that the entire space benefits from the air conditioning system.

## Conclusion
Installing a split system air conditioner on an internal wall is entirely feasible with careful planning and execution. By considering the structural requirements, planning the pipework route, and ensuring proper drainage, you can enjoy the benefits of a split system without compromising your home's aesthetics. Always consult with a professional installer to ensure your setup meets all technical and safety standards.