Most outdoor heaters work by using either infrared technology or convection to heat the air. Heaters that use infrared technology heat objects rather than the air around them, delivering warmth via radiation. Heaters that use convection, on the other hand, work by heating the air around them, which then heats objects. Outdoor heaters that use infrared technology are generally more expensive than regular heaters, but they are also more efficient. Heaters that use infrared technology are also better at heating large areas evenly. No matter what type of outdoor heater you choose, you'll be able to enjoy warm weather even when it's chilly outside.