The term “insulted vents” refers to both vents themselves and venting, or ducting, systems that connect to vents. An insulated vent entails a vent or vent duct made of or containing some kind of insulation, usually either heat or sound insulation. This insulating material, often made of urethane or a ceramic compound, comprises part of the physical makeup of the vent or venting system, rather than a material applied after the manufacturing process, such as duct insulation.
The properties of an insulated vent ultimately depend upon the manufacturing process used for a each specific vent, though most insulated vents exhibit a handful of general properties. Insulated vents usually exhibit a high degree of heat resistance, making them impervious to damage from temperatures as high as 2,000 degrees Fahrenheit in some cases. These vents also help retain warmth within your home, increasing energy efficiency. Certain insulated vents, particularly those designed to work with fans, contain sound, as well as heat insulation, to diminish sound created by fans or other mechanical parts.
The most common use for insulated vents lies in venting home appliances from inside to outside of the home. Things such as kitchen range hoods, stoves, fireplaces and dryers all require venting to an outside environment. All of these things produce a high degree of heat – using an insulated vent helps reduce the risk of fires in vents for such appliances. Insulated vents also prevent cold or hot air from leaking into your home from the outside. This function of insulated vents helps lower energy costs by keeping heating and cooling requirements to a minimum.
Always use insulated vents exactly as directed by the manufacturer. When you purchase an insulated vent, it should come with a manual that contains warnings and installation instructions. Not all insulated vents contain the same type or strength of insulation. For instance, if you want to use an insulated vent with your gas fireplace insert, you must purchase an insulated vent rated for high heat and specifically designed to work with fireplaces. Otherwise, it may present a fire hazard. Never attempt to insulate an uninsulated vent on your own unless you have experience with these things – many types of insulation contain flammable or potentially toxic materials.