The factor that you're going to check is if it's powerful enough to heat your pl. The De'Longhi HVE332-3 Fan Heater has two power settings at 3kW being a superior high. That's far more than enough to heat most rooms.
Safety features: heaters should be safe get a especially if you pick a Alpha Heater Vs Amperheat. Before making a purchase, check if it characteristics tilt safety switch. This switch will shut off of the heater automatically if it's very knocked with.