Articles by Paul Ehrlich P.E.

One of the most important factors in the efficiency of any HVAC system is the selection and implementation of the proper control sequence of operations. 

We have reached the point where any new (or replacement) BAS is expected to support one or more open protocols. 

We almost always think about the BAS as a tool that is a critical part of energy management, so these systems are typically focused on those systems that directly use energy — notably the HVAC and lighting systems.

Generally, when we think about BAS, it is in the context of large commercial buildings, those well over 25,000 sq ft. According to the latest government data though (from the 2012 Commercial Building Energy Consumption Survey), 88% of all commercial buildings are 25,000 sq ft or less.

Proper BAS monitoring can help juggle pressure, economizer strategy, and occupant needs. 

Long-term success depends on more than efficient chillers and boilers.

As energy codes evolve, efficient lighting systems will become more ‘need’ than ‘want.’

From support to semantics, the road to “plug and play” isn’t always smooth but the journey continues.

While they sometimes fall under the radar, these small systems can provide big gains.

The right questions might give you some design maneuverability among tight requirements.