Is Your AC’s Evaporator Coil Leaking? If your air conditioner is going to have a refrigerant leak, there’s a good chance it will happen on the indoor coil. Also known as the evaporator coil, this air conditioner component lives inside your HVAC system’s indoor unit. Refrigerant Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Share on Pinterest (Opens in new window) Pinterest More Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on Reddit (Opens in new window) Reddit Share on Tumblr (Opens in new window) Tumblr Share on Telegram (Opens in new window) Telegram Share on WhatsApp (Opens in new window) WhatsApp