If I need a power flush,just how long should it take?? Never hesitate to ask an engineer approximate times!
Watch out for the cowboys whoclaim they can power flush yoursystem in less than a couple of hours!Because in fact they wont be doing anything beneficial to your system, so be careful when looking for your engineer, its not essential but try going for a gas safe registered engineer.
Check out www.powerflushinfo.co.uk to find out how long all sized systems should take andwhat the results of a good job carried out properly should look like. BEFORE AFTER