Walmart has the Dreo Space Heater on sale for only $49.99! (Reg. $70) This heater has Awesome Reviews! Dreo Space Heater, powered by Dreo Hyperarcs Technology, the electric heater heats up more efficiently with up to 1500W working power. The portable heater has four adjustable fan speeds and can heat up to 200 square feet.This heater uses a precision thermostat for accurate temperature control.