I booked online and provided quite a bit of detail about the model of my appliance and suspected fault. The engineer arrived promptly but didn't spend very long investigating the problem, he took the filter off and said he could see a broken fan blade. I'm not sure what he did but he wiggled something and completely broke it. He said that I'd need a new motor and fan and this would cost £100, £120, £150 (the price kept changing but I never got a firm quote) but I could buy a replacement for much cheaper. When the engineer arrived my appliance was working, I paid £90 for him to completely break it and tell me to buy a new one. I've since taken the appliance apart myself and there is no broken fan. I can't help but feel that the engineer had already decided before he arrived that it wasn't worth repairing my appliance and I'd have rather received that advice before they came out. It would have saved them 15 minutes and me £90. The only other plus was the engineer did give advice about how to remove the old appliance which was helpful but not worth the call out fee.