
Data centers are in a full-tilt gold rush and the winners are the ones “tanking” advantage of smarter HVAC design. With nonstop thermal loads and tight efficiency targets, system stability matters more than ever. Wessels TES thermal energy storage tanks allow operators to shift cooling to off-peak hours, smooth out fluctuations, and gain valuable capacity without oversizing chillers. When paired with Wessels buffer tanks and high-pressure bladder expansion tanks, chilled water loops maintain steady performance and protect uptime.
Reliability is equally critical in mission-critical environments. Wessels SS-AP stainless steel air purgers remove damaging entrained air that can disrupt pumps and reduce overall performance. Stainless construction options throughout the product line support glycol and strict water quality requirements in modern data center designs. From TES tanks that shave peaks to SS-AP air management that keeps systems clean and consistent, Wessels helps data centers turn HVAC infrastructure into a competitive advantage.
Thermal Energy Storage Tanks

Wessels TES Thermal Energy Storage Tanks are designed to store thermal energy for cooling data centers, renewable energy applications, loss of power, or delivery during off-peak hours. The tanks feature dual inner-screen WesPro Super Baffle Systems to stratify and reduce the thermal mixing zone (thermocline), increasing the delivery efficiency of hot or chilled water.
Low water volume systems require additional “buffer energy” capacity to eliminate problems such as excessive equipment cycling, poor temperature control, and erratic system operation. The TES Tank adds the necessary volume to “buffer” the system volume.

Air Purgers
In-line Air Purgers are used for commercial and industrial hydronic systems, to effectively control and eliminate entrained air.
The SS-AP Series air purgers:
- Rated to 450°F and 150 PSI
- Designed with an embossed flow indicator arrow for proper installation.

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