by Patrick Federer | 30 December, 2025 | HVAC, Hydronic Balancing, Water Flow Meters
In Part One, we reviewed the importance of wet pressure measurement and explored the first four Greystone devices. Modern HVAC systems increasingly demand more flexible sensing, improved access for maintenance, and better fault detection. In this second part we...
by Patrick Federer | 28 November, 2025 | HVAC, Hydronic Balancing, Uncategorized, Water Flow Meters
Water pressure is a core variable in any hydronic HVAC system. Engineers rely on accurate pressure data to manage flow, maintain energy efficiency, and protect equipment. As buildings become more complex, correct pressure measurement grows even more important....
by Patrick Federer | 10 November, 2025 | Field Devices, HVAC, HVAC Controls
Smart field devices are found more and more in modern HVAC installations. Contemporary HVAC and building automation systems depend on more than sophisticated software. The real intelligence often lies in the field, within actuators, sensors, flow meters, and leak...
by Patrick Federer | 29 August, 2025 | HVAC, HVAC Controls, HVAC Efficiency
HVAC efficiency has improved dramatically in the last fifty years. In 1975, most HVAC plants ran at constant speed. Controls were crude and local. Efficiency metrics were rarely discussed outside design teams. Since then, performance has improved dramatically....
by Patrick Federer | 31 July, 2025 | controllers, HVAC, HVAC Controls
Heating, ventilation, and air conditioning (HVAC) systems play a key role in indoor climate control. Among the most energy-efficient HVAC systems is the Variable Air Volume (VAV) system. It delivers air at a constant temperature but varies the airflow based on a...
by Patrick Federer | 29 April, 2025 | HVAC, HVAC Controls, HVAC Sensors
The S&S Merlin 3000S energy saving control system offers a smart and efficient solution to reduce commercial kitchen costs without compromising performance or safety. In the fast-paced world of hospitality, restaurant owners constantly seek ways to manage costs....
