Avoid!!. The engineer couldn't be bothered to look for parking, insisted that I call up Westminster council to ask for a permit (they don't offer those). Couldn't be bothered to wait 10 minutes until he found a parking space even though I suggested many places, even offered to take his tools while he went to the local parking garage 5 minutes down the road. In the 10 years of living at my property have never had this issue with any repairmen or engineers that have come to my house, Glotech gets the honour of being the first. He spoke to me in a very unfriendly tone and offered no solutions and ended up driving off. Ended up booking another company in the end.