What type of appliance installation does require a permit?

For unvented room heaters, a permit is typically required because these appliances are subject to specific safety regulations and building codes. These heaters can pose risks related to indoor air quality and safety, such as carbon monoxide buildup and combustion byproducts. To ensure proper installation and adherence to local codes, a permit helps ensure that the installation meets all necessary safety standards and regulations. The permitting process often includes inspections by qualified personnel, which can prevent potential hazards that are associated with improper installation.

In contrast, appliances like refrigerators generally do not require permits since they are considered household appliances that do not directly involve gas connections or significant safety risks. Horizontal furnaces may have different requirements depending on specific local codes, but often do not require permits unless they involve complex installations. Gas fireplaces can sometimes require permits, but this can vary significantly based on local regulations, as some may classify them differently than unvented room heaters.