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Central air conditioner or split machine? Choosing is important for air conditioning
As temperatures continue to rise, air conditioners have become essential in every household. Recently, friends looking to buy air conditioners are often torn between choosing central air conditioners or split systems. What are the differences between these two popular types of air conditioners, and how do you decide which one is right for you? Let’s explore this question further.
Which air conditioner should you choose? For a home with three bedrooms and a living room, where each area requires individual air conditioning, installing multiple split air conditioners or opting for a central air conditioning system might seem daunting. A living room of 25 square meters may feel limited when using a single split air conditioner, while concerns about high electricity bills often arise with central air conditioning. How should you make the decision? In homes with limited space but a need for air conditioning, is a wall-mounted split system a better choice, or is central air conditioning more appropriate? These questions linger in the minds of many consumers, leaving them unsure about which option is better. Let's delve deeper into the comparison between central air conditioners and split systems.
Consider the Environment
Central air conditioners are typically concealed within the ceiling, with only the indoor panels visible. In contrast, split air conditioners require some space within the room, particularly larger cabinet-style models, which can limit interior design flexibility. Many split air conditioners aren't particularly aesthetically pleasing. Central air conditioners, however, remain hidden in the ceiling, causing minimal disruption to your home’s decor. Models like the TR series from US brands are only 21 cm thick and 45 cm deep, offering a sleeker appearance that enhances the interior design. Using split air conditioners necessitates keeping doors and windows closed, which over time can lead to poor indoor air circulation. Central air conditioners, on the other hand, often incorporate a "fresh air system," featuring both supply and return air outlets, promoting better indoor air circulation.
Energy Consumption
When it comes to energy savings, split air conditioners use an outdoor unit connected to multiple indoor units, improving energy efficiency through independent operation. Most central air conditioners utilize DC inverters, such as the double-rotor DC inverter compressors found in TR series domestic central air conditioners, significantly boosting energy efficiency. Precision temperature control in split air conditioners primarily relies on the start-stop operation of the outdoor unit, resulting in less accurate temperature regulation. Household central air conditioners, equipped with DC inverters, offer higher temperature control accuracy and superior constant temperature effects. For example, a total cooling capacity of 1160 kW can cool each room during summer and heat them in winter. To achieve the same effect with split air conditioners, you would need to purchase 100 units of 11.6 kW split systems.
Practical Use
In terms of indoor noise, split air conditioners often use window-mounted units, making it challenging to integrate noise-reducing features. Central air conditioners can include noise-reduction devices in their indoor units, reducing operating noise. The TR series, for instance, optimizes its fan ducts to achieve ultra-low noise levels as low as 24 dB. The lifespan of split air conditioners is approximately 10 years, requiring replacement after a certain period. Central air conditioners, with their indoor units embedded in the ceiling, are less susceptible to external factors, allowing for a longer lifespan of 15 to 20 years. Additionally, central air conditioners are less prone to malfunctions, whether in the air handling unit, return air duct system, fan coil, or fresh air system. Split air conditioners, spread across different spaces, are more vulnerable to external damage and harder to repair.
Cost Considerations
When purchasing, if you only need 1-2 air conditioners, split air conditioners are more cost-effective. However, if you require four or more units, the combined cost of multiple split air conditioners can rival the price of a single central air conditioning system. Installation costs for split air conditioners are relatively low due to their simpler setup. Central air conditioners, whether ducted or multi-split, require more complex installations, leading to slightly higher installation fees compared to standard split systems. While the initial purchase and installation of split air conditioners are cheaper, their shorter lifespan and energy-saving limitations affect long-term usage costs. Conversely, despite slightly higher upfront prices and installation costs, central air conditioners offer longer lifespans and lower power consumption, resulting in reduced overall usage costs.
Choosing the Right Air Conditioner
When selecting an air conditioner, consider the space requirements. For smaller areas, split air conditioners are ideal, whereas multi-room setups or larger spaces benefit more from central air conditioning, especially if aesthetics are a priority.
Look at the Frequency Conversion Mode
There are AC frequency conversion and DC frequency conversion options available. AC frequency conversion models are more affordable but less efficient with a smaller operating range. DC frequency conversion models, while pricier, offer higher efficiency.
Number of Air Conditioners Needed
The number of air conditioners depends on the space size, orientation, and materials used. In southern regions, 1 air conditioner per 15 square meters is recommended, 1.5 horsepower for 20 square meters, and 2 horsepower for 20-30 square meters.
Energy Efficiency Ratings
Higher energy efficiency ratios (EER) indicate better technical performance and greater energy savings. National regulations categorize air conditioner EER into three levels, with Level 1 being the most energy-efficient and Level 3 the least.
Final Thoughts
Choosing between central air conditioners and split systems ultimately depends on your specific needs and budget. Whether you prioritize aesthetics, energy efficiency, or long-term cost savings, both options have their merits. Carefully evaluate your circumstances before making a decision to ensure the best fit for your home.