Pump Recommendations Please
I have a 25,000 gallon pool, DE Filter (I think it is a Purex Triton FNS 36) and use a polaris 360 (no booster pump). Currently have a Hayward Super pump 2HP, which with the frigid temps in Atlanta the last few weeks has been running alot with the freeze protection and it has started to whine VERY LOUDLY. My suspicion is that it is going. Not sure how old it is but I think it is 10 years old. I am wondering if it is worth trying to find out why the whine or should I just go ahead and replace it. If I replace it, I am curious as to how variable speed pumps work and if anyone has knowledge about what it costs to run a very efficient variable speed pump vs. just swapping out with another Super Pump? Any recommendations? Thanks.