In many countries, air conditioners are assigned star ratings to indicate their energy efficiency. The star rating system provides consumers with information about how energy-efficient a particular air conditioner is compared to others in the market. Higher star ratings generally indicate higher energy efficiency, which means the air conditioner consumes less electricity to provide the same cooling output.
If an air conditioner has no star rating, it typically means that it hasn't been officially tested and rated for energy efficiency by the designated regulatory or certification bodies in that particular country or region. This could be because the air conditioner is new in the market, or it may not meet the specific requirements for testing and rating.
It's worth noting that the absence of a star rating doesn't necessarily mean that the air conditioner is inefficient. It may still perform well and provide cooling comfort. However, without a star rating, consumers may not have a standardized benchmark to compare its energy efficiency against other models in terms of power consumption.
When purchasing an air conditioner without a star rating, it's advisable to consider other factors such as the brand reputation, user reviews, and specifications provided by the manufacturer to make an informed decision about its performance and efficiency. Additionally, you may want to ensure that the air conditioner complies with local energy efficiency standards or regulations, if any, to ensure its overall quality and energy consumption are acceptable.