filter pressure rising ever half hour

[jerry]

Hi, my pool filter pressure keeps rising 15psi every 1/2 hr. I've backflushed and clean the filter several times and no help. I guess my question would be can I be getting air from something else? I'm thinking maybe the pump! any ideas?

[carusoswi]

I am not certain why you think air has anything to do with the pressure. If air is getting into the system, more than likely, the pressure would fall if affected at all.

Generally, increased pressure is a sign of water restriction, most often at the filter medium or in a supply/return line.

Caruso