Not known Facts About How to extend HVAC system longevity May 27, 2024 Category: Blog Choosing the right HVAC repair parts as well as commercial or industrial applications.Air filters, furnace filters and AC filters are identical products plus the phrases are utilised interchangeably. Except for dimensions discrepancies, the air filter that goes while in the central HVAC unit or your return vents is named an “AC filter” or perhaps “air filter,” check this and filters that go your furnace unit in your home are identified as “furnace filters.”