Quartz infrared heaters have been around for years. This new space heating technology proved immensely popular and, like every good idea, quickly spawned a number of competitors.
The heaters reviewed below share standard features such as casters, washable filter, thermostat, and remote control. They each draw around 12 amps at start up and then 6 or 7 amps to maintain temperature. At 12¢ per kWh (the national average) the cost to run these space heaters is 16¢ per hour at full power, 12¢ per hour at 1,000 watts, and 6¢ per hour at the low, 500 watt setting.
Since the standard 110 volt residential circuit is 15 amps, only one heater should be plugged into each circuit if multiple heaters are being used.
Overall, modular type infrared heaters have an excellent safety record and are considered child and pet friendly. According to one manufacturer: "The heat generating quartz infrared elements never get to a temperature that can ignite a fire." Although this is probably true, it's imperative to keep all space heating appliances at least 3 feet away from flammable objects such as drapes and furniture.