Both in the house and exterior Goodman heat pump units contain moving mechanical components which produce noise. In 2013, the CEN started focus on standards for protection from noise pollution caused by heat pump outdoor units. Although the CEN/TC 113 Business Plan outset was that “consumers increasingly require a low acoustic power of these units as the users and their neighbors now reject noisy installations”, no standards for noise barriers or other means of noise protection had been developed by January 2016.