Knots are not just for shoelaces and sailing lines. In the last decade, physicists have shown that swirling liquids can ...

At a recent meeting of the International Ground Source Heat Pump Association (IGSPHA), Enertech business development manager Rob Derksen shared tips for how HVAC contractors can become better at ...

Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...