these details so you'll find responsible aftermarket air filters for residential use as well as industrial or industrial apps.Air filters, furnace filters and AC filters are identical products as well as the phrases are applied interchangeably. Aside from size distinctions, the air filter that goes from the central HVAC unit or your return vents is called an “AC filter” check these guys out or maybe “air filter,” and filters that go your furnace unit in your home are called “furnace filters.”