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Why Choose a Patio Heater Electric? Electric heaters can be hardwired to the wall or plugged in to the standard outlet. They're not portable, as are propane heaters, but they're less expensive to run and don't require replacement heaters. Choose an outdoor heater that is built with materials that balance the durability and style. Some heaters are designed to look elegant and blend into your outdoor decor, whereas others are standout pieces that can make your patio the envy of your neighbor