Family Dollar Stores Recalls Optimus Tower Quartz Heaters Due to Overheating and Fire Hazards Optimus Tower Quartz Heaters are portable electric tower heaters that are about 10 inches wide, 25 inches tall and 9 inches deep. The heaters have a white metal casing with a white plastic top, a wire cage protecting the heating elements and vent slits at the bottom. The front section of the top has the brand name "Optimus' a power light, a caution light and two dials. One dial turns the heater on or off and selects the power of either 750 watts or 1500 watts. Family Dollar Stores has received several reports of overheating, including some reports of temperature knobs melting. This overheating risk potentially poses a serious threat of fire and resulting property damage and of more concern serious injury and or death. Consumers should immediately unplug and stop using these heaters and return them to any Family Dollar Stores location for a full refund.