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Patio Electric Heater Electric patio heaters are the modern way to extend outdoor living spaces. In contrast to older natural gas and propane-powered patio heaters, which emit carbon monoxide, electric models do not require ventilation and are safe to use in closed spaces as long as they are not left unattended. Calculate the cubic footage and desired temperature rise to determine the power (BTUs). Power Patio heaters can keep outdoor living spaces cozy and warm even when the sun sets and temperatures fall. Radiant heat is emitted from the heaters o
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