Space heaters provide supplemental heat, adding to your home’s main heating system. US space heaters run a maximum of 1500 watts, enough to warm a 150 square feet room. The basic math is that you neet 10-15 watts of energy to heat every square foot of room space. Choose a space heater based on yoru room size.

There are two kidns of heaters: Radiant / infrared heaters and convection heaters. Radiant heaters work by heating up a wire or a quartz (quartz is safer than wire), but the heat dissipates quickly when you switch off the heater. 

On the other hand, convetion heaters use a fan to push warm air into the room. Convection heaters are considered safer and work better as lower temperatures. Below models are all convection heaters. 

Good space heaters have great safety features, and more heating and timing options. They are compact, and make less noise. Good convection space heaters ( fan-forced ceramic heater) come with the option to oscillate the heaterfrom side to side, allowing the heater to spread its heat to a larger area compared to a stationary fan.

Safety warning: Always purchase a space heater certified by either the CSA or the ULC (UL in the United States). And please don't use the space heater with an extension cord.

The best space heater for smaller rooms: Lasko 754200 Ceramic Heater (a bit noisy, but affordable)

The best space heater for bigger rooms or less noise: De‘Longhi EW7507EB (almost silent, steady heat)

The second best space heater for smaller rooms: Vornado VH10 Heater (pricey)