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Patio Electric Heater Patio electric heaters offer a modern way to extend your outdoor living space. In contrast to older natural gas and propane-powered patio heaters that emit carbon monoxide, electric heaters don't require ventilation and are safe to use in closed spaces, provided they are not left unattended. To determine the power (BTUs) required to heat your space, you must calculate the cubic footage of your space and the degree of temperature rise you wish to achieve. Powe
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