Line voltvoltage heating is defined as the use of wiring to deliver an electrical current that runs between two established points within a building, usually between a transformer and outlet. Line-voltage heating is generally used for large appliances and systems such as air conditioners, oil heaters, hot water heaters, electric ranges, and heat pumps. Unlike most other forms of electrical wiring, line-voltage wiring requires special protective devices due to its higher power density and potential risks. Despite these potential dangers, many homes still utilize line-voltage heating and it can provide efficient, cost-effective benefits when installed correctly and handled with care.