Not a specific brand but style of electric heater. I prefer the oil filled ones. They make zero noise and safer because they don't have an exposed heating element that can catch things on fire by coming in contact. The one have has a temperature setting and a clock that can be programmed to turn itself on/off at designated times. Cons are they take a while to heat up and are a bit larger. Mine is tall and thin, looks a bit like a boiler radiator. The big hardware chain stores sell them, I'd expect to pay around $100.
This. They’re surprisingly energy efficient, and while they take a bit to heat up, once they get going they really radiate. I have a small one, and it gets me through the coldest days of winter without needing to turn on the built-in heaters in my apartment.
Bonus is that my cat loooves it. He posts up right next to it and is in cozy heaven.
My heat pump is 300% efficient roughly meaning that it outputs the same amount of heat as three 1kW heaters but instead of 3kW it only consumes 1kW or energy.