September 1, 2025
In ASHRAE Standard 90.1-2016, a critical update was introduced: Chilled-water cooling coils must now be selected with a minimum 15°F temperature difference (ΔT) between the entering and leaving water temperatures at design conditions.
What Does This Mean?
This new requirement is designed to increase system efficiency by reducing pumping energy, optimizing coil performance, and lowering overall operating costs.✅ Example Compliance:Entering Water Temperature: 42°FLeaving Water Temperature: 57°FΔT: 15°F ✅ (Meets ASHRAE 90.1 Standard)🔑 Why It Matters:✔️ Lower Water Flow = Less pumping energy✔️ Higher ΔT = Better coil heat transfer efficiency✔️ Reduced Operational Costs = Improved chiller performance & sustainabilityMany engineers and designers are now re-evaluating their coil selections to ensure compliance with this efficiency-driven standard.
January 22, 2026
January 7, 2026
December 29, 2025
December 22, 2025
December 19, 2025
December 16, 2025
December 11, 2025
December 8, 2025
December 5, 2025
December 1, 2025
November 27, 2025
November 22, 2025
November 21, 2025
November 20, 2025
November 19, 2025
November 18, 2025
November 17, 2025
November 15, 2025
November 14, 2025
November 8, 2025
November 7, 2025
November 6, 2025
November 5, 2025
November 4, 2025
November 3, 2025
November 2, 2025
November 1, 2025
October 31, 2025
October 30, 2025
October 28, 2025
October 25, 2025
October 24, 2025
October 23, 2025
October 22, 2025
October 17, 2025
October 16, 2025
October 15, 2025
October 13, 2025
October 10, 2025
October 6, 2025
September 29, 2025
September 26, 2025
September 23, 2025
September 11, 2025
September 3, 2025
September 2, 2025
September 20, 2024
September 13, 2024
September 5, 2024
August 31, 2024
August 28, 2024
August 26, 2024
August 25, 2024
August 24, 2024
May 14, 2024