Tính tiết kiệm năng lượng khi nâng cấp bơm hồ bơi tốc độ thay đổi. Tiết kiệm hằng năm và thời gian hoàn vốn theo định luật Affinity.
Variable speed drive (VSD) pool pumps save energy because pump power scales with the cube of speed (Affinity Law). Running a VSD at 50% speed uses only 1/8 the power of full speed — massive savings over long run times.
Enter your current single-speed pump HP, daily run hours, and electricity rate. Then specify the VSD schedule: hours at 100%, 75%, and 50% speed. The calculator compares annual electricity cost and shows percentage savings.
Typical savings range from 50–80%. Add the new pump cost to see payback — most residential VSDs pay back within 2–4 years. Keep total runtime long enough to achieve one full pool turnover per day.