some vacuum cleaners already utilize brushless motors, but not all models have made the transition for several reasons:
Cost: Brushless motors are generally more expensive to manufacture than traditional brushed motors. As a result, vacuum cleaners with brushless motors may have a higher retail price, which could impact consumer adoption, especially in price-sensitive markets.
Technology adoption: Brushed motors have been used in vacuum cleaners for a long time and are well-established. Manufacturers may be hesitant to switch to brushless motors because of the costs involved in retooling their production lines and investing in research and development.
Performance and efficiency: Brushless motors are more energy-efficient than brushed motors, providing better performance and longer-lasting operation. However, the benefits of brushless motors may not be as evident in entry-level or basic vacuum cleaner models, and manufacturers may prioritize keeping costs down for these products.
Customer familiarity: Consumers are more familiar with traditional brushed motors, and many may not fully understand the advantages of brushless motor technology. Manufacturers might choose to focus on marketing and educating consumers about the benefits of brushless motors to increase demand.
Market demand: The demand for vacuum cleaners with brushless motors may not be high enough to drive widespread adoption. If consumers do not show a strong preference for brushless motor technology or are not willing to pay a premium for it, manufacturers might not prioritize transitioning their entire product line.
I recommend checking with vacuum cleaner manufacturers or retailers to see if there have been any developments or changes regarding the adoption of brushless motors in vacuum cleaners beyond that date.