Packaged Terminal Heat Pumps (PTHPs) have undergone remarkable evolution since their early iterations as Packaged Terminal Air Conditioners (PTACs) commonly found in hotels.
In late September I gave a presentation at the 12th Annual North American Passive House Conference, organized by PHIUS, describing how heat pump water heaters can be used for combined space heating and water heating. When strolling the vendors' floor between presentations, I was pleasantly surprised to see an increase in the quality of Passive building products.