Air conditioners have become an integral part of our lives, especially during the hot summer months. When choosing a suitable cooling system, buyers are often faced with the question: inverter or conventional (non-inverter) air conditioner?
Principle of operation
Conventional (non-inverter) air conditioners
Conventional air conditioners work on the principle of switching the compressor on and off to maintain the set temperature. When the room temperature rises above the set temperature, the compressor switches on at full capacity and runs until it reaches the desired temperature, after which it switches off. This cycle is repeated over and over again.
Inverter air conditioners
Inverter air conditioners work on a more complex principle. Instead of constantly switching on and off, the compressor of an inverter air conditioner runs continuously, changing its capacity according to the current needs. This allows for a more precise maintenance of the set temperature and reduces the number of compressor starts and stops.
Technical specifications
In this section, we will review the technical characteristics of conventional and inverter air conditioners. Technical parameters are key when choosing an air conditioner, as they directly affect the performance, durability and usability of the unit.
Conventional air conditioners
In conventional air conditioners, the compressor runs at full capacity or is completely switched off. This means that the compressor is either running at 100% or not running at all. This mode results in frequent switching on and off, which puts additional load on the compressor and increases energy consumption.
Inverter air conditioners
The compressor of inverter air conditioners regulates the power over a range. This allows the compressor to run more smoothly and continuously, reducing load and energy consumption.
Comparative table of technical characteristics
| Characterisation | Conventional air conditioners | Inverter air conditioners |
| compressor | Full power or switched off | Adjustable power (10-100%) |
| Energy efficiency (SEER) | 10-15 | 16-25 |
| Noise level | 50-60 dB | 20-40 dB |
| Operating temperature range | -5°C to +43°C | -15°C to +46°C |
| Energy consumption | Peak at each start-up | Smooth, no sudden jumps |
| Compressor life | 8-10 years old | 12-15 years old |
| Cooling area | 15-60 square metres | 20-80 square metres |
Energy efficiency
Conventional air conditioners
Due to the constant switching on and off of the compressor, conventional air conditioners consume more energy. At start-up times, the compressor uses the most electricity, resulting in significant spikes in energy consumption.
Inverter air conditioners
Inverter air conditioners consume significantly less energy due to the smooth regulation of the compressor capacity. The absence of frequent compressor starts and stops also reduces the load on the electricity grid, making these units more economical.
Noise level
Conventional air conditioners
The periodic switching on and off of the compressor of conventional air conditioners is accompanied by noise. This can be especially noticeable at night, when any additional activity in the home becomes more audible.
Inverter air conditioners
Inverter air conditioners are much quieter. The smooth variation of compressor power and the absence of frequent switching on and off can significantly reduce noise levels, making them an ideal choice for a bedroom or children’s room.
Service life
Conventional air conditioners
Frequent switching on and off of the compressor causes it to wear out quickly, which can shorten the life of a conventional air conditioner. It also increases the likelihood of breakdowns and the need for repairs.
Inverter air conditioners
Inverter air conditioners, due to their softer operation, wear out more slowly. This extends the life of the unit and reduces maintenance and repair costs.
Maintaining a comfortable temperature
Conventional air conditioners
Conventional air conditioners maintain the temperature with a certain error, as they switch on and off when a preset threshold is reached. This can cause the room temperature to fluctuate, making users uncomfortable.
Inverter air conditioners
Inverter air conditioners maintain a more stable temperature by continuously regulating the power. This creates a more comfortable indoor environment and avoids sudden temperature fluctuations.
Cost
Conventional air conditioners
The initial cost of conventional air conditioners is usually lower than inverter air conditioners. This makes them attractive to buyers on a tight budget. However, it should be borne in mind that higher running costs may offset this price difference over time.
Inverter air conditioners
Inverter air conditioners typically cost more at the purchase stage. However, their higher energy efficiency and durability save on maintenance and repair costs, making them a better investment in the long run.
Environmental aspect
Inverter air conditioners are less harmful to the environment due to their energy efficiency. Reduced energy consumption leads to lower carbon dioxide emissions, which contributes to the fight against global warming.
Table comparing environmental aspects
| Environmental aspect | Conventional air conditioners | Inverter air conditioners |
| Energy consumption | High, with peak spikes | Smooth, low |
| CO₂ emissions | Highs | Lowes |
| Carbon footprint | significant | Smaller |
| Service life | 8-10 years old | 12-15 years old |
| Refrigerants | Traditional, high GWP | Modern, low GWP |
| Partial load efficiency | Low | High |
The choice between an inverter air conditioner and a conventional air conditioner depends on your individual needs and finances. If low initial costs are important to you and you are willing to put up with higher operating costs, a conventional air conditioner may be the right choice. However, if you are looking for long-term savings, low noise, stable temperature, and concern for the environment, an inverter air conditioner would be a better choice.
Think about your priorities and choose the system that best suits your needs. And remember, investing in quality climate control equipment will pay off with comfort and peace of mind in your home.
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