was set up by two close friends In October 2017. With a combined experience of 20 years in the energy sector, Ali and Dan have helped hundreds of customers claim government grants towards heating and insulation measures. We do not only help customers in need of support, but also cover the private sector of work for Solid Wall Insulation and renewable heat pumps. Duoserve will carry out the required survey at the property and choose a professional and reliable installer. We will always make sure the customer has a top quality service hence why we only work along side the best.