Most of us have been there. You’re stumped trying to figure out why a room is uncomfortable and aren’t sure what to do next. You’ve measured the fundamental stuff like total external static pressure ...

Have you ever been scared to add outside air to a residential system’s return air duct for ventilation purposes? If you’re like me, I worried the outside air would affect the return temperature too ...

Heating, ventilation, and air conditioning (HVAC) systems in commercial buildings can be of great assistance to firefighters, but they can also be our worst nightmare. In order to truly understand how ...