Wall Mounted vs Ducted Systems: Best Choice for Extensions & Loft Rooms
Extensions and loft conversions are fantastic ways to add space to your home, but they often come with one common issue – overheating. Large windows, modern insulation, and altered airflow can make these areas uncomfortable, especially in summer.
Choosing the right air conditioning system is key to maintaining a consistent temperature without compromising your new space. Two of the most common options are wall mounted and ducted systems, each with their own advantages.
Which Air Conditioning System Works Best for Extensions?
The answer depends on how your extension has been built and how you plan to use the space.
A wall mounted air conditioning unit is often the go-to option for single-room extensions due to its simplicity and efficiency. On the other hand, ducted systems are better suited to larger or multi-room layouts where a more integrated solution is needed.
If you’re unsure which system suits your extension, you can speak to TRS Cooling for tailored advice based on your layout and usage.
What Is a Wall Mounted Air Conditioning Unit?
A wall mounted air conditioning unit is a split system where the indoor unit is fixed high on a wall and connected to an external condenser.
Why it works well in extensions:
Because extensions are often designed as single, large spaces, this type of system offers a straightforward and effective solution.
What Is a Ducted Air Conditioning System?
Ducted systems distribute air through concealed ducts, typically hidden in ceilings or floors.
Why homeowners consider ducted systems:
However, the ducted air conditioning installation cost is usually higher due to the complexity of the setup and the need for additional space.
Is a Wall Mounted System Enough for a Loft Room?
In most cases, yes.
Loft rooms often have sloped ceilings and limited space, making them less suitable for ducted systems. A wall mounted air conditioning unit can be positioned strategically to maximise airflow without taking up valuable space.
Key benefits for lofts:
This makes it a practical choice for converted attics or top-floor rooms.
When Does Ducted Air Conditioning Make More Sense?
Ducted systems are typically better suited to larger projects or where aesthetics are a top priority.
Ideal scenarios include:
Although the ducted air conditioning installation cost is higher, the result is a clean, seamless finish that blends into the home.
Cost Comparison: Wall Mounted vs Ducted
Understanding cost differences helps you plan more effectively.
| Feature | Wall Mounted System | Ducted System |
| Installation cost | Lower | Higher |
| Installation time | 1–2 days | Several days |
| Visual impact | Visible unit | Hidden vents |
| Maintenance | Straightforward | More complex |
| Flexibility | High | Moderate |
While the initial investment for ducted systems is greater, they may add value in certain property types, particularly high-end extensions.
How Important Is Aesthetics?
For many homeowners, aesthetics play a big role in the decision.
Wall mounted systems:
Ducted systems:
If your extension focuses heavily on design and clean lines, ducted systems may be worth considering despite the higher ducted air conditioning installation cost.
Can You Combine Both Systems?
Yes, and this is becoming increasingly common.
Some homeowners choose to install:
This hybrid approach allows you to balance cost, performance, and aesthetics across different areas of the home.
For more complex layouts, TRS Cooling can assess your property and recommend a combination of systems that work together seamlessly.
A Typical Extension Installation Scenario
Imagine a rear kitchen extension with bi-fold doors and a large glass roof. The space looks fantastic but becomes uncomfortably warm during sunny days.
After a survey, the homeowner opts for a wall mounted air conditioning unit positioned above the main living area. The system delivers fast, efficient cooling without requiring major structural changes.
In contrast, a larger property with multiple connected rooms might benefit from a ducted system, ensuring even cooling throughout the entire space.
What About Installation Disruption?
Wall mounted systems:
Ducted systems:
Planning ahead is key. Installing ducted systems during the build stage can reduce disruption significantly.
What Should You Consider Before Choosing?
Before making a decision, think about:
Taking these factors into account ensures you choose a system that fits both your space and lifestyle.
