Mountain_Man,

thank you for your shedding light on these various important aspects of running the pump - I think I will go forward if I can obtain one at a decent price (can you recommend a dealer ?). My pool is a basic 20K gallon ingound - see this thread for my learning curve on how to size a pump - see http://www.poolforum.com/pf2/showthread.php?t=2171).

Yesterday I measured the actual consumption of my current 1HP (sf 1.0) Hayward SuperPump and is was constant at 1200W as expected. It is like running an electric kettle 10 hours a day ...

To turn over the pool once per day I would probably need around 1 kwh/day (even if I double that it still saves me $350 for every 5 month pool season)

A two-speed Pentair wfsd-3 - same specs as the wfsd-24 - would save about $200 of our $400 per season electric bill for the pool.

Thanks

Patrick