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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 systems.

RectorSeal LLC has introduced the RectorSeal HVACR (RSH) Series of surge protective devices (SPD). The permanently-installed RSH Series is designed to protect all single phase, 120/240-V air conditioning, heat pumps, and ductless mini-split systems (DMSS) from transient over-voltage and natural-cause surges.

Heat Transfer Products Group LLC (HTPG) debuted its ColdZone Dual-Pak Multi-refrigerant Air Cooled Condensing Units for walk-in cooler and freezer applications.

Cooper&Hunter added a new series to its current heat pump line-up with single-zone applications. The new Dakota series aims to ensure consistent warm comfort during extreme climate and the condenser heat output capacity allows the unit to work efficiently as a primary heat source even if the temperature drops to a sub-zero level of minus 22ºF.

This month’s Facility File will focus on the B2B November test for the addition of a 100-ton, year-round cooling tower addition as standby to an existing, older cooling tower serving a process cooling system in a pharmaceutical facility.

Facilitating such mechanical upgrades, one must focus on all factors, including identifying critical loads, electrical system sizing, load shedding, and more.

Heat Transfer Products Group LLC (HTPG) has appointed Mark Evans as vice president and general manager.