In today's world, protecting the environment has become a top priority. With Infratech heaters, you can entertain outside without producing the negative environmental effects created by most gas-fired heaters or outdoor fireplaces. Traditional gas burners are often less than 50% efficient and emit carbon monoxide and other hazardous gases as a by-product of combustion and burning fuel. By contrast, Infratech's energy-efficient infrared fixtures convert over 90% of input energy directly into radiant heat, and operate for just pennies per hour. Infratech electric infrared heaters are safe for use outdoors or indoors, operate silently, emit no greenhouse gases or unpleasant odors and do not require ventilation. In addition, Infratech comfort heater components and packaging are completely recyclable.