Harness the power of the SUN

EVAPCO, Inc. continues its dedication to energy efficiency improvements with the newest AT Series induced draft, counterflow cooling tower – the EVAPCO SUN. Crafted from decades of engineering know-how, the SUN cooling towers series from EVAPCO features state-of-the-art induced draft, counterflow technology to deliver superior operating advantages in any climate.  From performance to maintenance, they simply work smarter.

  • Net-zero: solar panels fully power unit at 50% capacity
  • Capacity of 241 and 383 nominal tons
  • IBC Compliant – Independently certified by the International Building Code to withstand seismic and wind load forces in North America
  • Independently certified by the Cooling Technology Institute

evapco-at-ut-uss-cooling-tower

Warm water from the heat source is pumped to the water distribution system at the top of the tower. The water is distributed over the wet deck fill by means of large orifice EvapJet™ nozzles. Simultaneously, air is drawn in through the air inlet louvers at the base of the tower and travels upward through the wet deck fill opposite the water flow. A small portion of the water is evaporated which removes the heat from the remaining water. The warm moist air is drawn to the top of the cooling tower by the fan and discharged to the atmosphere. The cooled water drains to the basin at the bottom of the tower and is returned to the heat source. The vertical air discharge of the AT design and the distance between the discharge air and fresh air intakes reduces the chance of air recirculation, since the warm humid air is directed up and away from the unit.

EVAPAK® Fill
  • Constructed of inert polyvinyl chloride (PVC)
  • Resistant to rot or decay
  • Capable of water temperatures up to 130ºF
  • Usable as an internal working platform
  • Flame spread rating less than 25 per ASTM E84
High-Efficiency Drift Eliminators
  • Limits the drift rate to less than 0.001% of the recirculating water rate
  • Reduces water loss during wet operation
  • Constructed of an inert polyvinyl chloride (PVC)
Superior Air Inlet Louver and Screen Design
  • Constructed of an inert polyvinyl chloride (PVC)
  • Water and Sight Tight (WST) design that minimizes splash-out and the potential for algae formation inside the tower
  • Framed in steel in easily removable sections
Pressurized Water Distribution System
  • Utilizes EVAPCO's patented EvapJet™ nozzle for even water distribution
  • Constructed of schedule 40 polyvinyl chloride (PVC) pipe and ABS plastic nozzles
  • The piping is easily removable for cleaning
  • The nozzles are large orifice and have no moving parts, making them practically impossible to clog
Stainless Steel Cold Water Basin
  • Available in Type 304 or Type 316 Stainless Steel
  • Includes the entire basin area including the support structure, vertical columns, louver frames, and the plenum
  • Welded basin seams for leak-free operation
Stainless Steel Casing and Fan Section
  • Available in Type 304 or Type 316 Stainless Steel
  • Includes the entire upper section, including mechanical equipment support, fan cowl, and fan guard
 Water Treatment Systems

Available with water treatment systems, providing environmentally sensitive alternatives for treating water in evaporative cooled equipment.

  • SmartShield solid chemical water treatment system
  • Pulse-Pure CHEMICAL-FREE water treatment system
Maintenance Accessories

The SUN product line is available with multiple equipment options to aid in the maintenance of the cooling tower. These options include:

  • External Service Platform
  • Basin Level Platform
  • Sloped Ladder
  • Motor Davit
Document Categories
Name File Size Type Language
Global Product Catalog 53.71 MB Catalog English
What's In Your Stainless Steel 422.04 KB White Paper English
Cooling Towers - Winter Operation (Free Cooling) 371.16 KB Engineering Bulletin English
Cooling Towers Marketing Brochure 27.97 MB Catalog English
Equipment Layout Manual for Cooling Towers, Evaporative Condensers & Closed Circuit Coolers 5.52 MB Layout English
HVAC Products: Features & Applications 10.14 MB Layout English
Maintaining and Cleaning Stainless Steel 156.53 KB Engineering Bulletin English
Maintenance Schedule 87.79 KB O & M English
Operation & Maintenance Instructions - Cooling Towers 10.85 MB O & M English
Rigging and Assembly - SUN Cooling Tower 2.78 MB Rigging English
Product Model filter

Drawing Types
Media name Drawing Type Drawing Format Product Model
SUN-112-812L CAD Drawing CAD Drawing CAD Drawing (.dwg) SUN-112-812L
SUN-112-812L REVIT/3D Model Revit/3D Model Revit/3D Model (.rfa) SUN-112-812L
SUN-112-812L Steel Support (English) Steel Support Print (.pdf) SUN-112-812L
SUN-112-812L Steel Support (Metric) Steel Support Print (.pdf) SUN-112-812L
SUN-112-812L Unit Certified (English) Unit Certified Print (.pdf) SUN-112-812L
SUN-112-812L Unit Certified (Metric) Unit Certified Print (.pdf) SUN-112-812L
SUN-19-611 CAD Drawing CAD Drawing CAD Drawing (.dwg) SUN-19-611
SUN-19-611 REVIT/3D Model Revit/3D Model Revit/3D Model (.rfa) SUN-19-611
SUN-19-611 Steel Support (English) Steel Support Print (.pdf) SUN-19-611
SUN-19-611 Steel Support (Metric) Steel Support Print (.pdf) SUN-19-611