Air-to-water and water-to-water heat pumps are often equipped with refrigerant reversing valves, allowing them to function as chillers. Small-scale chilled water cooling systems can be configured for various heating/cooling loads, client expectations, and budgets. When properly designed and installed, these systems provide several advantages over competing cooling methods. However, critical details must be accounted for Read more
John Siegenthaler
On the opening day of the AHR Expo in Chicago—Monday, January 22—the crew from Mechanical Hub was fully immersed in the very first Coffee with Caleffi Live from the Caleffi booth. There, emcees John Mesenbrink and Tim talked with industry powerhouses John “Siggy” Siegenthaler, Bob “hot Rod” Rohr, Eric Aune and Andy Mickelson about the Read more
Air-to-water heat pumps provide a way to migrate existing hydronic heating systems supplied by fossil fuel boilers to sustainable electric energy. In many projects there are compelling advantages for retaining the existing boiler and adding the heat pump to create a “dual-fuel” system. These systems will likely be the most common application for air-to-water heat Read more
Can a hydronic system effectively – and efficiently – provide heating, cooling, domestic hot water AND heat recovery ventilation in a residential home? John Siegenthaler, P.E., a favorite to the webinar series, will discuss design details, challenges and lessons learned from a from a recent project profile of a modern hybrid approach utilizing an air-to-water heat Read more
There is an ongoing need for technicians who can diagnose and correct issues with all types of HVAC systems. Continuing from Troubleshooting Hydronic Systems, Part 1 where host John Siegenthaler, P.E. built a framework for system troubleshooting, this webinar will cover identifying common system problems and applying corrective actions. Siegenthaler finishes this two-part discussion at Read more