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Patio Outdoor Gas Heater A patio gas heater is an easy, easy-to-use method to add warmth and ambience to your outdoor space. The devices make use of liquefied petroleum gas (LPG) to create radiant heat that warms the area around them in the same way to sunlight. Propane patio heaters require a refillable tank. Safety Gas patio heaters are increasingly popular for heating patios and other open areas in restaurants and homes. These devices are convenie