Why do air conditioning merchants always say: laymen buy frequency converters, while laymen buy fixed frequencies? There is a significant difference between the twoWhen purchasing air conditioning, one often hears the following sentence:Non professionals buy frequency converters, while professionals buy fixed frequenciesSo, what are variable frequency air conditioners and fixed frequency air conditioners, and what are the differences between them?This article will provide a detailed explanation to help everyone better choose the right air conditioner for themselves.1...