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Gas Fire Patio Heater A gas fire patio heater can heat a seating area and provide an inviting space to gather with friends. They can be powered by natural gas, propane, or electricity. Electric models are more portable, but emit no carbon monoxide or fumes. Propane tanks are portable but require refilling, whereas natural gas patio heaters are connected to a home's natural gas line, and reduce the need for canisters. Safety Features Patio heaters can provide comfortable heat to enjoy your outdo