Combination space heating and hot water equipment has improved dramatically since the launch of a new CSA standard five years ago. But manufacturers are wondering why the provinces have been so slow to incorporate it into their building codes.
Installing ultraviolet lamps in HVAC ductwork used to be all about indoor air quality. But for many commercial and institutional customers, better IAQ is just a happy side effect in an effort to maximize HVAC system efficiency. (Part I of this article, covering residential UV, appeared in the March issue of P&HVAC.)