Name a common type of gas appliance in residential settings.

Water heaters are a common type of gas appliance found in residential settings because they efficiently heat water for various domestic uses, such as bathing, cooking, and cleaning. Many households utilize gas-powered water heaters due to their ability to reach higher temperatures faster than electric models, often resulting in lower energy costs over time. The use of natural gas or propane to power these units is prevalent, making them an essential fixture in most homes.

In contrast, while refrigerators, dishwashers, and clothes dryers can be powered by gas, they are more commonly found in electric models. For instance, electric refrigerators are the standard in most homes, and dishwashers and clothes dryers also primarily use electricity. Therefore, among the options provided, water heaters stand out as a specifically common and crucial gas appliance in residential environments.