Which type of appliances are listed and labeled for venting with Type L vents?

Type L vents are specifically designed for venting appliances that produce combustion gases at moderate temperatures. These vents are used primarily with oil-burning appliances, which require a special type of venting system to safely remove the flue gases produced during combustion. The materials and construction of Type L vents provide the necessary durability and safety for these higher heat conditions associated with oil-burning operations.

While other appliances like electric, wood-burning, and gas appliances may also have specific venting requirements, they do not utilize Type L vents in the same capacity. Electric appliances do not require venting, as they do not produce combustion gases. Wood-burning appliances typically use a different type of venting system designed to handle higher creosote levels, while gas appliances generally use Type B or other venting systems more suited to their combustion characteristics. Therefore, the association of Type L vents with oil-burning appliances is due to the specific standards and safety requirements necessary for effective and safe venting of such equipment.