Most commercial chillers spend the vast majority of their operating hours at part-load, yet constant-speed equipment draws nearly full power regardless of demand. Variable speed drives (VSDs) close that gap.
How VSDs Save Energy
A VSD adjusts motor speed to match the actual cooling load in real time. Because fan and pump power scales with the cube of speed, even a modest speed reduction produces an outsized drop in energy consumption. Facilities that retrofit VSDs on chillers, cooling tower fans, and pumps routinely see double-digit reductions in mechanical system energy use.
Retrofits typically pay back quickly, and many utilities offer rebates that shorten the timeline further. Ask us for a load profile assessment to see what a VSD retrofit could save your facility.