Dyson Pure Hot+Cool Link, a hideously expensive fan heater that can be controlled from anywhere.
It also monitors air quality, temperature, humidity, etc.
I also have normal fan heaters that come on when the temperature is low & the electricity is cheaper per kWh than the gas, & they’re controlled via Kasa, as is my main dehumidifier which is turned off when electricity is above a certain price. The heaters get swapped out for the aircon in summer.
I kinda like gadgets.