After years as a commonplace solution across the Atlantic, variable refrigerant flow systems are starting to establish their presence and value, in North America. After a quick primer on the thinking behind the technology, one firm shares their experiences and lessons so far in working with VRF.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.