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Proper Care and Maintenance of a Patio Heater Gas Cylinder Patio heaters have become a popular option for homes and restaurants. The majority of patio heaters are portable and come with bases on which a butane or propane cylinder can be kept. They shouldn't be positioned close to flammable decorations or awnings. They also require a gas regulator to disperse the gas. This is important because different gases have different pressures and require different regulators. How to choose