Adjust your expectations if you're picturing short sleeves in a snowfall. Patio heaters raise the temperature from "uncomfortably cool" to "nice when dressed appropriately. " On windy days, you may not get the most out of your patio heater because a single gust of wind might spread the heat. An outdoor heater, on the other hand, maybe a good choice if you want to enjoy your outdoor patio for longer periods of time throughout the year or even at night.