I never watch TV. TV is geared to a child mentality. If it's promoted on TV, ist's probably Chinese junk anyway. Like the 'miracle heater' on the YT ads. What a joke. No electric heater can consume anymore than 1500 watts max and the btu output is based on that. Besides, electricity is the most expensive heating medium out there.
I'll stick with my off grade seed corn, it's free. My total heat bill for the house is right about 250 bucks a year. Been the same for a while now. May put in a solar array to cut it even more.