We bought a house 4 months ago and have had "fun" with the pool ever since. Our first power bill (for 17 days in June) was for $850. The house was built in 1955, but the A/C was built (and I guess installed soon after) in June of 2012 so it's 2 years old or less. As soon as we got the water balanced in the pool, I cut back the filter time from 6 hours twice a day, to once a day for about 4 1/2 hours and the pool is crystal clear and beautiful for the last 2 months. However our power bill is still running about $550 a month and we no longer need the A/C. The only thing that we can see using that much power would be the pool pump.
I was just wondering if what the guy at the chain Pool Supply place told me is accurate. According to him, our pool pump is actually sized for a hotel sized pool and the fact that we can hear it running from across the yard, means it is about to go out. We currently have a WhisperFlo WFE-6 pump with a 1 1/2 HP motor with a SF of 1.47 and SFHP of 2.20 in a pool that is approximately 18,500 gallons.
If this is correct, how do I size the pump properly for best efficiency?