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Gas For Patio Heater The type of fuel used in patio heaters can affect the cost and the heat output, whether you are buying them for your own use or for use in a restaurant. Gas-powered patio heaters are available in three major kinds that include natural gas, propane and electric. Natural gas patio heaters are connected to the gas line that runs through your home and never have to run out of fuel. However, they require professional installation. Safety Patio heaters can help extend your outdoor season by