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Natural Gas Patio Heaters Natural gas patio heaters can help you increase profits by allowing customers to stay warm outside, even when the seasons have changed. They require little maintenance and can last years. Keep the patio heater away from any flammable materials and follow all manufacturer's guidelines for testing, servicing and lighting. A trained technician in service should repair any leaks. Installation Natural gas patio heaters unlike propane heaters that are portable, are directly con