I was advised by our boiler manufacturer that our central heating system needed a power flush to correct a boiler heat exchanger issue, which would then need to be changed. I contacted EVO along with several other companies and it was quite clear from the outset that EVO plumbing and heating had far better experience and technical expertise than any of the others. The work was carried out exactly as described, in a very professional, clean, and commendable fashion. Now the powerflush is complete, not only is my heating now hotter and more efficient than ever, but it also seems to have fixed the issue with the heat exchanger!