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Differences Between Inverter and Conventional Air Conditioners


1. Energy Efficiency (SEER)

  • Conventional: Typically do not exceed a SEER (Seasonal Energy Efficiency Ratio) of 12.
  • Inverter: Always have a SEER higher than 12, offering greater energy efficiency.

2. Compressor Operation

  • Conventional: Operates at maximum speed until the desired temperature is reached, then shuts off. It restarts when the temperature rises again.
  • Inverter: Adjusts the compressor speed to maintain the desired temperature without turning off.

3. Energy Consumption

  • Conventional: Frequent on/off cycles of the compressor waste energy.
  • Inverter: Avoids these cycles by maintaining constant refrigerant pressure, improving energy efficiency.

4. Operational Noise

  • Conventional: Louder due to the compressor’s constant start-and-stop at full power.
  • Inverter: Quieter, as the compressor adjusts its speed based on demand.

5. Temperature Control

  • Conventional: Temperature fluctuates within a noticeable range.
  • Inverter: Maintains a more stable and comfortable temperature.

6. Electronic Interference

  • Inverter: Can generate electronic interference in sensitive equipment, such as servers or medical devices in hospitals.

7. Voltage Sensitivity

  • Inverter: More prone to damage from voltage fluctuations or power outages.

8. Initial Cost

  • Conventional: More affordable upfront.
  • Inverter: More expensive initially, but energy savings over time offset the higher cost.

9. Ease of Fault Diagnosis

  • Conventional: Easier to diagnose issues due to simpler control systems.
  • Inverter: Faults, especially in the electronic board, may require advanced diagnostic tools.

10. Repairs and Testing

  • Conventional: Fewer electronic components, making repairs simpler.
  • Inverter: Requires additional tools and specialized knowledge for testing and diagnostics.

11. Failure Probability

  • Conventional: Lower likelihood of failures due to simpler design.
  • Inverter: More electronic components increase the chance of faults, particularly in environments with electrical fluctuations.

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