EPVS is a certification standard that certifies the processes used by installers to ensure energy saving, generating and/or storing calculations/estimates for home energy products are accurate and valid. We aim to protect consumers from receiving overinflated figures from installers when making a purchase by sampling the contractual paperwork to ensure this meets our certification standard.

A Chartered Trading Standards Institute (CTSI) approved Consumer Code, HIES is a leading consumer protection organisation covering the installation of home energy products. Our promise is to ensure all consumers are respected, protected and educated on their home improvement journey.