Will dynamic power flushing with non-acidic chemical cleaner validate the warranty on my combi boiler?
If anything, your warranty will be invalidated if the power flush is not done, it should however be done before the new boiler is installed, and then done again with a pre clean before the new boiler is commissioned, some manufacturers insist on this, not doing this correctly will become evident in 2 – 7 years when the boiler is broken.
