Are both sides of the system considered high pressure high velocity?

The supply side of the system is characterized by higher pressure and velocity compared to the return side.

The return side of the system functions just like a conventional system. This means that you can use accessories on the return side in the same way as you would with a conventional system. This includes the use of humidifiers, UV lights, and Electronic Air Cleaners. However, it is important to note that a bypass humidifier should not be utilized.