John N Dunn Scotland

Poor experience with with this company, I do not trust them or the quality of their work. I would avoid them at all costs.They showed up with wrong parts for a job, not transparent about it, possibly not knowledgeable enough to realise it. Had to get someone else in to finish their work, as I just didn't trust JN Dunn at this point and it was an effort as the work JN Dunn started was not a good job according the tradesperson who cleaned up after JN Dunn.And now just had the brand new boiler commissioned and signed off by J N Dunn break down after about 2 months, the boiler manufacturer sent out an engineer to fix the problem and he finds the system is full of sediment, filthy orange water full of little particles which broke the pump. Leading me to question whether JN Dunn properly flushed the system when they commissioned it. Waiting on an analysis of the system water now to see what is what.Based on my experience, I don't trust JN Dunn, I don't think they do quality work, and I question their competence.