I was quoted for a like-for-like replacement boiler for my oil-fired central heating system in October. I was extremely impressed by the handling of my initial query with everything explained fully before I was given a quote. I had considered postponing until the following spring, but the old unit began leaking. I contacted DW Dunn and although extremely busy, they were able to offer carrying out the work within three weeks due to a cancellation. They arrived promptly on the agreed date and removed the old boiler, before carrying out work to the piping and addressing the issues surrounding my existing flue outlet. The latest regulations required a pipe to be fitted above the gutter level and away from a neighbouring property. All works were carried out by two excellent installation engineers who were hard-working, did a clean and tidy job and were very friendly throughout. The job was completed on time within two working days, on budget and (one month later), the house has a much quieter heating system now. I really am extremely pleased with the work carried out and wouldn't hesitate to recommend this company to others. A first-class experience.