Why Does My Central Heating Need a Powerflush or Descale?

Which Boiler?

Warning - Fitting a New Boiler to Existing Central Heating

Modern efficient boilers have much smaller components then traditional designs (passageway diameter in boiler heat exchangers used to be up to 1cm and can now be 1mm). This means they are very sensitive to anything that could cause a blockage. If a failure occurs where sludge or debris is found present in the new boiler the manufacturers warranty will usually be cancelled.

The Industry Standards

All new central heating systems should be pre-commission cleansed as per BS7593 and Benchmark.
This ensures flux residues, excess jointing compounds, mineral oil and other contaminants that can be found in the cental heating systems following installation, and that can affect the performance of the heating or cause component failure, are removed. It is important when installing new boilers into old systems that all sludge is first removed from the system or this could accumulate in the new boiler and lead to premature failure. It is important when installing new boilers into old systems that all sludge is first removed from the system or this could accumulate in the new boiler and lead to premature failure.