There are many different types of patio heaters available on the market, and choosing one can be quite a daunting task.
The type of patio heater you choose will depend on the size of your patio, how often you use it, your budget, as well as the weather conditions where you live. There are two basic types of patio heaters: electric heat and propane heat. Electric heaters burn natural gas or electricity. They tend to be more expensive than propane heaters, but they are typically more efficient and last longer. Propane heaters burn propane gas. They cost less per hour of heat than electric heaters, but they are more expensive and they also produce carbon monoxide fumes. You can choose a portable heater, which is small enough to fit into a car or truck and can be moved from one location to another.
Portable heaters are ideal for a small patio because they only need to be used for a short period of time each day. Most patio heaters have a thermostat that turns the heater on and off based on the outside temperature. The thermostat can be set to turn the heater on at a certain temperature, and to turn it off when it reaches a certain temperature. The thermostat controls the flow of electricity to the heating elements, so that the heater will stay at a steady temperature.  Electric patio heaters are very convenient because you don't have to turn the heater on and off manually. They come in many different sizes, so they can be used in a variety of locations. Most patio heaters are very efficient and produce very little heat loss.