In Singapore, air conditioning is not just a luxury but a necessity, especially in HDB flats and condominiums where space and temperature regulation are key concerns. When it comes to choosing the right air conditioning system, many homeowners are torn between split unit aircon and system (multi-split) aircon. While both systems serve the same purpose, they each offer unique benefits depending on your home’s size, layout, and cooling needs.
In this guide, we will compare split unit and multi-split systems, helping you understand which is better for your HDB or condominium. We’ll break down the differences in energy efficiency, installation complexity, costs, and long-term maintenance to help you make an informed decision about which system best suits your home.
What is a Split Unit Aircon?
A split unit aircon consists of two parts: an indoor unit and an outdoor unit. The indoor unit contains the evaporator coil and fan, which circulates cool air into the room, while the outdoor unit houses the compressor and condenser, which expel heat outside. This system is commonly used in HDB flats and smaller rooms where a single, compact cooling unit is sufficient.
The split unit aircon is favored for its simplicity and cost-effectiveness, making it a popular choice in Singapore’s dense urban spaces. It is also easier to install compared to other systems, as it requires just one indoor and one outdoor unit to function. This aircon type is ideal for homeowners who want a straightforward cooling solution without the complexity of multiple indoor units.
What is a System Aircon (Multi-Split)?
A system aircon, often referred to as a multi-split system, consists of multiple indoor units connected to a single outdoor unit. Each indoor unit is responsible for cooling a specific room or area, and each can be controlled individually, allowing for customized temperature control across different zones in your home.
Multi-split systems are ideal for condominiums or larger homes that require efficient cooling across several rooms. This system allows you to maintain consistent comfort without needing multiple outdoor units, making it a space-efficient solution for larger spaces with more rooms.
Pros and Cons of Split Unit vs System Aircon
Advantages of Split Unit Aircon
- Compact and Simple: Split units are ideal for small homes, individual rooms, and HDB flats. They’re compact, straightforward to install, and don’t require significant modifications to the property.
- Low Initial Cost: A split unit generally costs less upfront compared to a multi-split system, making it a budget-friendly option for homeowners looking for a cost-effective solution.
- Energy Efficiency for Smaller Spaces: For single-room cooling, split units are highly energy-efficient, reducing both upfront and long-term electricity costs.
- Minimal Aesthetic Impact: The outdoor unit is smaller and less intrusive than the multiple units required for a multi-split system, making it more suitable for smaller homes or apartments where space is limited.
Disadvantages of Split Unit Aircon
- Single Room Cooling: One of the main downsides of a split unit is that it can only cool one room. For larger spaces or homes with multiple rooms, additional units are required, which can drive up costs.
- Cluttered Outdoor Space: In homes with multiple split units, the outdoor area can become cluttered with multiple outdoor units, which might not blend with the aesthetic of the home or building.
- Energy Consumption for Multiple Units: If you need air conditioning in several rooms, each will need a separate unit, leading to higher energy bills compared to a multi-split system that can cool several rooms with one outdoor unit.
Advantages of System Aircon (Multi-Split)
- Efficient Cooling for Multiple Rooms: The multi-split system allows you to cool multiple rooms or zones with just one outdoor unit, making it ideal for larger homes or condominiums.
- Individual Room Control: Each indoor unit in a multi-split system can be controlled independently, allowing you to adjust the temperature in each room according to your preferences. This flexibility is especially beneficial in larger homes or multi-room apartments.
- Space Efficiency: By using one outdoor unit, multi-split systems reduce the need for multiple external units, making them ideal for properties with limited outdoor space, such as condominiums or homes with small yards.
Disadvantages of System Aircon (Multi-Split)
- Higher Initial Cost: The installation and system costs for a multi-split system are generally higher than those of a split unit. While the long-term efficiency can offset these costs, it might not fit within every homeowner’s budget.
- Higher Maintenance Needs: With multiple indoor units, maintenance becomes more involved. You’ll need to service each unit regularly, which can increase the overall maintenance cost compared to a single split unit.
Energy Efficiency and Running Costs: What to Consider
Split Unit Energy Efficiency
Split unit air conditioners are known for their energy efficiency, especially when used in single rooms or smaller spaces. They require only one unit to cool the area, which leads to less energy consumption compared to multiple units. With newer models featuring higher SEER (Seasonal Energy Efficiency Ratio) ratings, split units can deliver significant energy savings while maintaining cooling performance. However, for larger homes or multiple rooms, multiple split units can increase electricity costs due to the need for separate systems in each room.
Energy Tip: To maximize energy efficiency, choose a split unit with an inverter compressor that adjusts its speed based on cooling demand, preventing energy waste.
System Aircon (Multi-Split) Energy Efficiency
Multi-split systems are more energy-efficient for larger homes or multi-room setups, as they allow you to control each room’s temperature independently while using only one outdoor unit. This setup prevents the need for multiple compressors and reduces the overall energy usage. However, while multi-split systems are generally more energy-efficient than having several split units, they still tend to consume more energy than a single-unit system in smaller spaces.
For condominiums and larger properties, a multi-split system can save energy in the long term by reducing the number of outdoor units and associated running costs. However, the initial investment in a multi-split system can be higher.
Energy Tip: Ensure your multi-split system has zone control, allowing you to regulate cooling in different areas without wasting energy on unused rooms.
Installation and Maintenance: Complexity vs Convenience
Split Unit Installation and Maintenance
Split units are relatively easy to install and maintain, making them an excellent choice for homeowners who prefer simplicity and cost-effectiveness. Installation typically involves placing one indoor unit inside the room and connecting it to an outdoor unit via refrigerant lines, which requires minimal space and a straightforward setup.
For maintenance, split units are convenient because they have fewer components to check. Regular tasks like cleaning filters every 1-2 months, checking refrigerant levels annually, and servicing the outdoor unit every year can be easily handled by a professional technician. Maintenance costs for split units are generally lower, as there are fewer parts involved compared to multi-split systems. In terms of complexity, split units are ideal for HDB flats or smaller homes with one or two rooms that need cooling.
System Aircon (Multi-Split) Installation and Maintenance
System (multi-split) air conditioning units require a more complex installation due to the multiple indoor units connected to a single outdoor unit. Each indoor unit must be placed in a room, and these units are then connected via refrigerant lines to the outdoor unit. This type of installation involves more time and effort, and often requires professional services to ensure the units are properly aligned, connected, and configured.
Because the multi-split system has more parts (multiple indoor units), its maintenance is also more involved. Regular maintenance includes cleaning each indoor unit’s filters, inspecting the outdoor unit, and ensuring that all units are functioning correctly. Additionally, the refrigerant level must be checked for all connected units. Due to the complexity of the system, maintenance costs can be higher, and it may require more frequent servicing to ensure the system operates efficiently over time.
Which System Suits Your Property Type Best?
Split Unit Aircon for HDB Flats & Smaller Apartments
For HDB flats and smaller apartments, a split unit aircon is often the ideal solution. These units are perfect for single-room cooling and are relatively inexpensive to install. In Singapore’s compact living spaces, having a split unit in each room allows homeowners to control the temperature in specific areas without taking up too much space. Since HDB flats generally don’t have space for multiple outdoor units, a split unit’s single outdoor unit is a more feasible solution.
System Aircon (Multi-Split) for Condominiums with Space Limitations
Condominiums in Singapore, especially those with multiple rooms or open-concept layouts, often benefit from the flexibility and efficiency of a multi-split aircon system. A multi-split system allows multiple rooms to be cooled by a single outdoor unit, which is especially useful when outdoor space is limited. With a multi-split system, you can control the temperature in each room individually, making it an excellent choice for larger homes or condominiums where cooling needs vary from room to room.
Multi-split systems are also ideal for larger properties where noise and aesthetics of multiple outdoor units would be problematic. By consolidating the outdoor units into one, homeowners can maintain a cleaner, more organized exterior space. However, the higher upfront cost of installation may be a consideration for some property owners, though it can be offset by energy efficiency in the long run.
Which is Better for Landed Properties?
For landed properties, both split units and system aircons (multi-split) are viable options. If you have a larger home with many rooms, a multi-split system would work well because it allows each room to be cooled individually while using just one outdoor unit. For smaller sections of the property or if you are cooling a few rooms, multiple split units might be more cost-effective and offer quicker installation.
Landed properties offer the space to easily install multiple outdoor units, which reduces the restriction seen in high-rise buildings like condominiums or HDB flats. However, if space for outdoor units is limited or if you want to minimize outdoor clutter, a multi-split system is still an efficient choice.
Aircon Systems for Offices & Commercial Spaces
For offices or commercial spaces with multiple rooms, a multi-split aircon system is often the best solution. It allows each room or section of the office to be cooled individually, improving comfort for employees and customers. A multi-split system is energy-efficient because it uses only one outdoor unit to handle the cooling for several rooms. Additionally, businesses can save on electricity costs by adjusting the temperature in different areas based on usage. Multi-split systems are particularly useful for commercial buildings where a centralized air conditioning solution might be impractical due to zoning requirements.
If you are looking to install or replace your air conditioning system, SoCool offers a wide range of solutions for HDB flats, condominiums, and landed properties. Contact us today for a consultation to find the best aircon system for your needs.
Conclusion
When choosing between split unit and multi-split aircon systems, it’s crucial to consider your property type, space, budget, and long-term cooling needs.
- For HDB flats, small apartments, or single-room cooling, a split unit aircon is an affordable, easy-to-install, and efficient solution.
- For larger homes, condominiums, or properties with multiple rooms, a multi-split aircon provides flexible, energy-efficient cooling across different zones, offering individual control and minimizing outdoor unit clutter.
Ultimately, the right choice depends on your specific cooling needs and available space. While split unit systems offer simplicity and affordability for smaller spaces, multi-split systems are a superior choice for larger properties that require customized cooling for multiple rooms.
If you’re unsure which system best suits your needs, SoCool offers professional advice and installation services for both types of air conditioning systems. Our expert technicians can assess your property and recommend the best solution for long-term comfort and efficiency.
Frequently Asked Questions
1. Which air conditioning system is better for an HDB flat?
For an HDB flat, a split unit aircon is the best choice due to its affordability, ease of installation, and efficiency in cooling single rooms. It’s a practical solution for smaller spaces with limited outdoor space.
2. How much does it cost to install a multi-split system in a condo?
The cost to install a multi-split system in a condominium typically ranges from $1,500 to $3,500 SGD, depending on the number of indoor units and the complexity of installation.
3. What are the energy savings with a multi-split system compared to a split unit?
A multi-split system is more energy-efficient for larger homes or condos as it uses one outdoor unit for multiple rooms, saving on electricity compared to running several split units for each room.
4. How often should I service my air conditioning unit to keep it in top condition?
It’s recommended to service your air conditioning unit once a year for a split unit and every 6-12 months for a multi-split system to maintain efficiency and prevent issues like leaks and poor cooling.