Hi all, I'm in the market to replace my current energy hog (2HP constant speed Jandy JHP2.0) with a new VS pump. I know my current pump is oversized, and that the lines into my pool are too small. Right now, running the pump without the cartridge filters installed generates a pressure of 26 psi. Clean filter pressure through my 240 sqft cartridge filter is 28-30 psi, depending on how thorough I was cleaning them. I looked up the manufacturer's pump curve, which tells me I'm getting around 100 gpm through the pump at 28 psi, going to essentially nothing at 40psi. My pool is 18,000 gallons, so this gives me about a three hour turnover of all the water in my pool on a clean filter.
My real question is, what type of turnover should I be looking for on a VS pump. I've heard 8-10 hours is an okay rule of thumb, but I don't know if I should be looking for more flow than that at full speed if I'm trying to clean the pool up following a SLAM or something like that. If like to go down to at least a 1.5 HP VS pump, and 1 HP would be even better on my energy bills if I can still get enough flow.
Anyways, thoughts would be appreciated. Thanks!