As a designer for over 20 years I have worked with many plumber and heating engineers. Reliable, good at communicating, able to handle a very large project with numerous challenges, good paperwork and always cheerful are not always attributes I associate with this profession. However Dan and Exeter Heating are all of the above and more, I honestly, even feeling all reviews should highlight both the postive and the negative, cannot think of a single negative, I would add another star if possible.