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of a Gas Patio Heater A patio heater is an easy way to increase the ambience of the space. It is a wonderful addition to restaurants, bars and homes. However, it requires regular maintenance to ensure that it is functioning properly. Gas patio heaters are powered by propane tanks that need to be filled when needed. Electric models are more portable. Natural-gas patio heaters are connected to a natural gas line in the home and don't require refills however, they are more cost