When it comes to insulating air ducts, fiberglass is the most popular choice. It offers a range of R-values from R-4 to R-11, and is easy to wrap around the ducts. However, for exposed ducts, polyethylene (PE) insulation is preferable due to its weatherproof nature. Although it is more expensive than fiberglass, PE foam is rarely used to insulate ducts that are hidden from view.
For maximum energy efficiency and cost savings, it's important to choose the right type of insulation for your air conditioning system. The three main types of HVAC insulation are fiberglass, spray foam, and rubber. Each of these materials has its own unique set of advantages and limitations, so it's important to select the best insulation for your specific application. Factors such as budget, area of insulation, and type of ducts should all be taken into consideration when making your decision.
