I can say with confidence that no one succeeds in this HVAC business without mentors, educators — some of these individuals may have only provided you with good advice on one or two occasions, others may have far exceeded your expectations. 

I've found if your recommendation includes challenging the Big Mistake often seen with a demand-controlled ventilation (DCV) sequence for air-handing units (AHUs), you better be prepared for some unexpected arguments.

Dan Rettig, senior product manager for heat pumps and sustainability at Lochinvar, sat down with ES Magazine for a podcast interview discussing mechanical room decarbonization and retrofits. Here is a transcribed and edited excerpt of the conversation.

Aging and outdated railroads limit speed and weight, so the upcoming modernization projects will deliver faster railways and increase the efficiency of economic exchanges. Many of the projects funded will involve replacing older railways more prone to breakage and derailments. 

If you are interested in contributing to ES magazine and seeing your name in the byline, take a look at our 2024 editorial calendar.

First, there was the energy crisis in the 1970s that would reshape the HVAC industry and how we would select the optimum HVAC systems based on the primary heating and cooling resources. 

A new four-story Hampton Inn located in Ashland City, Tennessee — 30 minutes from downtown Nashville — opened to the public on March 3, 2022.

Hydronic systems offer commercial building owners and industry professionals the opportunity to both take baby steps and long leaps toward achieving net zero carbon emissions.

The ASHRAE 2023 Handbook HVAC Applications is now out, and we need to get ready to revise it again. Updated every four years, this volume is significantly larger than its previous editions, in part due to a new Chapter 66, In-Room Air Cleaners.

Bypass pipes, accompanied by a three-way control valve, are often seen in hydronic systems at both served loads (e.g., reheat coils) as well as at primary equipment (e.g., cooling towers).