Yes, there are two options gas and electric.
Electric – operates better in a windy situation but is more costly to operate and requires a lot of power.
Gas – Is less expensive to operate and comes in larger sizes to heat larger areas. They also come in portable models that run on propane and they can be moved to wherever the heat Is required.
The cheaper umbrella type patio heaters are not a good investment as parts are almost impossible to get since the majority of these units are made in China and parts are simply not available, so they are not a good investment