Our experience of gas and plumbing has taught us which parts of the system are most to likely to fail and we know how to repair them. As part of our diagnostics, we test all relevant parts to ensure that all problems are detected. We won't just throw costly parts at the problem in the hope it will fix it. We will explain in full what we have discovered and the options available to you. We are honest and fair, advising customers whether it is economical to spend the money repairing the appliances or whether they would be better off fitting a brand new one.