That's not to say the transition has been smooth and entirely clear-cut. There definitely was some confusion among manufacturers concerning the U.S. Department of Energy's (DOE's) new minimum energy efficiency standard.
"The handling of the ductless product with the U.S. Department of Energy was not great because we all thought that the ductless product was classified as a ‘space constrained' product in the ruling, providing an exemption - until about six months ago," said John Miles, director, engineering and technical support, Quietside/Samsung. "That kind of caught us all on the hop trying to put product together" to meet the 13 SEER requirement.