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.
When you enter into a contract with a member of HIES to install renewable
David —
After contacting Hiess about the prospects of installing panels and a battery I had an immediate response from Faisal and
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