Buying a variable speed pool pump should feel like an upgrade, not a guessing game, but most people get stuck on the biggest horsepower number and end up overspending. We walk through a simple approach that starts with what you already have: match the total horsepower of your current single speed pump within a reasonable range, then use VS programming to run the lowest RPM that still gives you clean water and solid circulation. From there, we get specific about the two things that quietly co...