With a considerable volume of contradictory information in circulation regarding the application of different technologies for HVAC systems, this article seeks to explain some of the technical aspects of variable refrigerant flow (VRF) systems, and offer comparisons on the basis of cost and performance to more standard hydronic systems. 

VRFY Inc., a trailblazer in AI-Driven Solutions for Law Enforcement and Defence, is pleased to announce the appointment of Timothy D. Moore as the new CEO, along with the addition of David Murray-Hundley "The Grumpy Entrepreneur" as advisor

The pandemic has caused IAQ to become a big concern, which has led industry experts to recommend increasing ventilation and upgrading filtration for commercial buildings.

The kenza cloud is a cloud-based platform for distributors, contractors, building owners, and facility managers who would benefit from remotely controlling, scheduling, and charting City Multi and M-Series systems’ data, along with getting off-site troubleshooting support.

The air365 Max with HeatForce heat pump can operate at 100% heating capacity with outdoor temperatures as low as -13°F and at 90% capacity down to -22°F.

From rebates to controls to acoustics and more, water-source VRF has been a game changer for the AC Marriott Dublin. For the general manager, it’s made all the difference in surpassing guests’ expectations.

The EPA has proposed a one-year extension for VRF systems using high-GWP HFCs.

The first thing that comes to mind when thinking about high-end air conditioning systems is usually cost.

Sales of VRF systems continue to rise unabated, leading many to predict their shipments will increase by double digits annually for the foreseeable future.

Not only has VRF technology been widely accepted by contractors and end users alike, virtually every major U.S. manufacturer is now offering these systems, as well.

Our Lady of Guadalupe Catholic Church’s community center in the Tempe, Arizona suburb of Guadalupe now has state-of-the-art HVAC thanks to variable refrigerant flow equipment, accessories, and installation labor donations from RectorSeal, Panasonic Air Conditioning Group (a division of Panasonic Corp. of North America), and Woody’s Heating and Air Conditioning.

A visit to an ASHRAE event 30-plus years ago introduced David Heckler to VRF technology, and the distributor was won over. VRF systems now make up about half of his company’s business.