The CSA has tested and certified the Uniflame EWUR730SP for quality and safety. For your safety, this heater runs on electricity instead of propane or kerosene. It plugs directly into a standard 120 volt grounded outlet. It uses radiant heat which is more efficient than ambient or convection heat. This is because radiant heat only heats objects or people, not the air. The Uniflame EWUR730 is not only safe, it is inexpensive to run as well. Purchase one now!