I bought my Webasto heater from Mellor back in 2014 and since then had it serviced by them once. Both times they were a delight to do business with. Unfortunately, the heater developed a fault so I had no hesitation in returning it to Mellor's. Their website is easy to follow offering various ways of getting the heater to them. You are kept updated on progress throughout the process via the website. On this occasion, I was contacted by both Stuart and Ian for clarification and it is obvious they know what they are talking about. I wouldn't hesitate in dealing with Mellor's again as they know exactly how to provide Customer Service. Top class company. I have no connection with Mellor other than being a very satisfied customer.