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WSL Series

The WSL Series induced draft, counterflow towers have been in production since 2007. Induced draft counterflow towers are ideal for minimizing tower footprint and are less prone to recirculation than other types of towers. Thermal capacities of single cell models ranges from 40 to 593 nominal tons. All single cell counterflow towers meet ASHRAE 90.1 efficiency requirements.


  • G235 (Z700) galvanized steel casing and basin
  • Internal structure hot dip galvanized after fabrication
  • Bolted construction (no self-tapping screws)
  • Cellular PVC inlet louvers are easily removable for maintenance
  • High efficiency PVC film fill
  • High performance PVC drift eliminators limit drift rate to as low as 0.0005% of circulating water flow rate
  • Square pattern nozzles provide optimal water distribution
  • Aluminum blade, corrosion resistant, low noise fans
  • Heavy duty banded v-belt and sheave fan drive system
  • Motors specifically configured for cooling tower use
  • Mechanical vibration cutout switch


  • Stainless steel construction (304 or 316)
  • Fully welded basin (stainless steel only)
  • Basin heater system
  • Sump sweeper
  • Electronic water level control
  • Water silencer
  • Remote sump
  • Higher temperature rated fill and drift material
  • Gearbox fan drive system
  • Direct drive system
  • Variable Frequency Drive (VFD)
  • Externally mounted motor
  • Super low noise fan
  • Velocity recovery stack
  • Vibration isolation system
  • Access platform with ladder and safety cage
  • Davit arm

See brochure, engineering data and specifications for more details.