Both of these electric systems are best sellers when it comes to an outdoor patio heater, but they do have their differences. The Bromic Platinum Smart-Heat is a bit more of a subtle design with a low clearance profile to it and comes with a recess kit so it can be built into a wall. The Bromic Tungsten Smart-Heat has more of an industrial design to it. Both are decent heating solutions for outdoor heating, but it really comes down to the aesthetic that you want.   Keep in mind not to confuse the Tungsten Smart-Heat Electric with the Tungsten Smart-Heat Portable. The Bromic Tungsten Portable is actually a gas heating system, not an electric one. The Smart-Heat Gas systems need open air or ventilation to help with mild emissions that come from the portable propane unit, while the electric versions can be used in completely enclosed areas. The electric is a dual element design.