We chose Paragas because the reviews on Worcester boilers were all excellent and the quote was about the same as another good company selling a less highly recommended model. The survey was thorough and all safety aspects were checked for us and our questions answered. The old boiler and tank were disposed of and the new pipework looks very well done. Everything was left very neat and tidy and the boiler looks great. We are sure that our heating will be more efficient and if there are any problems, we are pleased to have the ten year parts guarantee and free service next year.