As of April 15th the new water heater regulations went into effect. These regulation forced water heater manufacturers to provide a higher energy rating on there products. So not only did this drive up the cost of the water heater it also changed the size and configuration. So if you are one of the many home owners with a water heater in a closet or the attic do not be surprised if they can’t go back in that same location. The new heaters are lager in diameter and will not fit in the same location. at this point you may need to relocate to the garage or even consider putting in a tank less unit.