How about Panasonic energy storage air conditioner? What are the advantages? Should I buy electricity for auxiliary heating or heat storage?

Panasonic patented technology ENECHARGE thermal storage has the advantages of non-stop defrosting, small temperature fluctuation, no power consumption, safety and so on. However, electric auxiliary heating is generally of high power and unsafe to use. Thermal storage should be more expensive, but it is more cost-effective in the long run. Make full use of cheap off-peak electricity and reduce operating costs.