What is a Central Air Conditioning Ducted Unit?

📌 What is a Ducted AC Unit?

A ducted air conditioning unit is a hidden installation air conditioning system that operates on a one-to-one model, meaning one outdoor unit is connected to one indoor unit, and cold air is distributed to different rooms through air ducts. It offers a sleek, concealed look similar to central air conditioning, but is more affordable compared to multi-split central air conditioning systems. This makes it a great choice for residential homes and small to medium commercial spaces.

Ducted AC Unit

🔹 Ducted AC vs. Other Air Conditioning Types

TypeFeaturesBest For
Wall-mounted ACAffordable, easy to install, but occupies wall space and provides uneven coolingSmall rooms, individual spaces
Standing (Cabinet) ACHigh airflow, good for large spaces, but takes up floor spaceLiving rooms, conference rooms
Ducted ACHidden installation, even airflow, mid-range priceHomes, apartments, offices, stores
Multi-split Central ACMultiple indoor units connected to one outdoor unit, high-end comfort but expensiveLarge homes, office buildings, commercial spaces

✅ Advantages of a Ducted AC System

1️⃣ Cost-effective with High Value for Money

  • Compared to multi-split central AC systems, ducted units are 30%-50% cheaper, making them a budget-friendly alternative.
  • It includes both supply and return air outlets, ensuring better airflow circulation and temperature balance than traditional cabinet units.

2️⃣ Space-saving, Hidden Installation

  • The indoor unit is concealed within the ceiling, saving about 1㎡ of space compared to a standing cabinet unit.
  • It seamlessly integrates with interior design, avoiding the visual impact of a wall-mounted AC.

3️⃣ Even Cooling for Greater Comfort

  • Uniform temperature distribution, avoiding the discomfort of direct cold air.
  • 360° airflow, ensuring a balanced room temperature without hot or cold spots.

4️⃣ Flexible Installation with Partial Ceiling Design

  • Different rooms can have different air distribution methods for optimal cooling:
  • Living Room → Side supply & side return air
  • Bedroom → Hidden installation above a wardrobe
  • Study Room → Installed in the hallway ceiling, reducing noise

⚠️ Disadvantages of a Ducted AC System

1️⃣ Higher Noise Levels

  • Larger ducted units with higher airflow and pressure can generate some noise.
  • Solution: Choose low-noise models and optimize duct layout to reduce airflow speed.

2️⃣ Requires Multiple Outdoor Units

  • Since ducted AC systems use a one-to-one configuration, installing units for multiple rooms requires several outdoor units, which may take up significant balcony or wall space.
  • Solution: Plan outdoor unit placement carefully, using stacked installations or concealed areas.

3️⃣ Ceiling Height Considerations

  • Requires partial ceiling installation, which may cause a crowded feeling in rooms with low ceilings (<2.6m).
  • Solution: Opt for ultra-thin ducted units or use localized ceiling design to minimize space loss.

📌 Installation Methods for Ducted AC Systems

Ducted AC units typically use one of three airflow configurations:
1️⃣ Side supply with bottom return → Suitable for rooms with low ceilings, allowing partial ceiling installation.
2️⃣ Bottom supply with bottom return → Best for spaces with thicker ceilings, offering enhanced airflow.
3️⃣ Side supply with side return → Ideal for large living spaces, providing more consistent temperature control.

🛠️ Recommended Installation for Different Rooms

Room TypeInstallation MethodBenefits
Living RoomSide supply & side returnBalanced airflow, uniform cooling
BedroomHidden above wardrobeSaves space, reduces noise
Study RoomInstalled in hallway ceilingSpace-saving, quiet operation

🎯 Key Factors to Consider When Choosing a Ducted AC

1. Budget

  • Ducted AC systems are 30%-50% cheaper than multi-split central AC, but more expensive than wall-mounted units.
  • Ideal for homeowners seeking both affordability and aesthetics.

2. Ceiling Height

  • Recommended ceiling height ≥2.6m, as lower ceilings may feel cramped after installation.

3. Outdoor Unit Placement

  • If installing multiple ducted units, ensure sufficient space for outdoor units.
  • If space is limited, a multi-split system might be a better option.

4. Noise Level Preferences

  • Living rooms can use standard models with higher airflow.
  • Bedrooms and study rooms should have low-noise units to ensure a quiet environment.

🔍 Who Should Choose a Ducted AC System?

Best for:

  • Homeowners looking for aesthetic, concealed installation without the high cost of a multi-split central AC.
  • Apartments with ≥2.6m ceiling height, where partial ceiling modifications are feasible.
  • Those who want uniform cooling without the direct airflow discomfort of wall-mounted ACs.

Not ideal for:

  • Homes with low ceilings (<2.5m), where the installation may feel too restrictive.
  • Buildings without enough space for multiple outdoor units (a multi-split AC would be better).
  • People highly sensitive to noise, as ducted AC units generate more sound than wall-mounted units.

🏆 Conclusion

A ducted central air conditioning unit is a cost-effective and aesthetic solution for homeowners who want hidden installation without the high price of multi-split central ACs. Compared to wall-mounted or standing ACs, it provides better air circulation and comfort, while remaining cheaper and easier to install than full-fledged multi-split systems.

Key Considerations When Choosing a Ducted AC:
🔹 Budget → 30%-50% cheaper than multi-split central AC.
🔹 Ceiling Height → Should be ≥2.6m for best experience.
🔹 Outdoor Units → One-to-one setup requires space for multiple units.
🔹 Noise Levels → Choose low-noise models for bedrooms & quiet areas.

📢 Thinking about installing a ducted AC system? ! 😊