Due to the amount of energy used by heating and cooling systems, the Department of Energy (DOE) hiked up the minimum efficiency levels for air conditioners, heat pumps, and packaged units manufactured after January 1, 2015. These levels are determined based on region and carry varying requirements based on your location. Von Deylen Plumbing & Heating, Inc. will be able to answer any questions you may have regarding these minimum requirements and let you know what choices are available when you’re searching for a replacement system.