My heat pump has natural gas for secondary heat if heat pump cannot keep up or fails. In the winter I always run my system on eHeat mode and use the natural gas instead of the outdoor condenser/compressor because it is more efficient and provides better comfort.
I do not see an “eHeat” setting for the Wyze tstat. Is this true? Am I missing something? Even basic cheap Thermostats have a switch to go into eHeat only mode. Looking forward to hearing from others.