Astrit (AL Gas Engineers) was a professional from start to finish. He was on time every day and worked long hours each day to complete the installation of the new combi boiler on time. He explained the whole job very thoroughly and answered all of our questions clearly. He also provided the cheapest quote!!! He is definitely a man to trust and we will be recommending him to others, and no doubt all future jobs we have Astrit is the person we will call. 5* job completed.