Overview Get Started Explore our Products Sun Cooling Doors offer a more efficient cooling solution than traditional systems and can help you reduce energy costs. Sun Cooling Door 5200 System: Chilled Water Sun Cooling Door 5600 System: Refrigerant Gas Contact Sun Engage with a Sun expert to learn more about Sun Cooling Door Systems and determine the most effective cooling strategy for your datacenter. » Have Sun call you » Start a chat session Leverage Our Expert Services Sun Professional Services can help plan and execute a deployment of Sun Cooling Door Systems to deliver the greatest cost savings possible. » Contact Sun Professional Services » Learn about the Sun Eco Services Suite Find a Partner Sun partners operate around the world to help with your IT needs.