We had two boilers replaced at our property within a month of each other. Each time, when I called, Billy came round within 24 hours. The quote was emailed exactly whtn he said he would, the new boilers arrived on time and the work went smoothly. We had trouble getting the app to work and Billy contacted a friend to get further advice. When something seemed to be not working, Billy came round immediately to resolve the problem. Billy is polite, friendly and tidy. Have recommended him to a friend and trust that as he has our boilers booked in for service later this year, he will deliver on aftercare as well as he did on the installation.