A visit to an ASHRAE event 30-plus years ago introduced David Heckler to VRF technology, and the distributor was won over.

VRF systems provide personalized heating and cooling to multiple zones in a building by cycling refrigerant between an outdoor unit (air-source or water-source) and indoor units in each zone via ...

Full- and part-load performance of the VRF system in heating and cooling seasons was compared with a conventional rooftop unit (RTU) variable-air-volume system with electric resistance heating. During ...

Heating ventilation and air conditioning (HVAC) users now have access to a full suite of integration options from a single ...

The scope of work includes new doors, replacement windows, emergency lighting, new LED lighting control systems, the ...