An air handler is an important part of your HVAC system, especially here in Portland, OR where both heating and air conditioning are priorities for most of the year. It’s what moves the air from the HVAC unit through the ducts in your home, providing filtration as well as fan power to ensure maximum efficiency. Most are designed to work without a problem for many years, but like any other component in your home, it will wear out eventually. When it does, you need a professional service to install a new one. Here’s a quick breakdown of what you need to know.