Sheryl,

We just recently had a thread on this same matter as in your picture. You might go back and look for it.

Yeah, its wrong! There is no air gap on neither the termination of that T&P valve line or at the condensate on your air handler.

Here in Texas we must comment if the T&P does not terminate to an outside source. We don't see many here to a floor drain or to a sewer pipe connection as I suspect in your picture.

rick