Power Flushing of Heating Systems

The power flushing process forces water through a heating system. The force of the water loosens debris from the pipes and elements of the heating system. The effects of the process can be enhanced by the use of a protective cleanser, which will also help too prevent future build up. Power flushing removes lime-scale, corrosion and improves the efficiency of you central heating.

How Power Flushing Works

A power flushing pump is connected into the heating system and a powerful water flow is flow applied to the system. The flow is intermittently reversed and dislodges and loosens deposits and corrosion.

When the corrosion debris and sludge deposits have been loosened, clean water is forced through the heating system. This then pushes the contaminated water out through a dump valve into the drain.

Benefits of Power Flushing Heating Systems

If a heating system is not power flushed, corrosion debris can grow in the boiler.  Lime-scale gathers and heat transfer is reduced. This can cause major inefficiency which may account for over 25% of heating costs.
Power Flushing can benefit a heating system in several ways:

  • Minimise corrosion of the metal components within the heating system.
  • Reduce the formation of lime-scale and sludge in the heating system
  • Control the growth of microbiological organisms
  • Maintain the energy efficiency of the heating system

Power Flushing in New Heating Systems

Power flushing is also used to pre-commission new heating systems, to remove excess flux, swarf and other debris, and the grease and oil used to prevent rusting of components before use.

Existing heating systems should be power flushed immediately before a new boiler is fitted, to prevent possible future problems. Even in systems where no problems are yet evident, corrosion and sludge can be present.

Debris can often be dislodged by modifications to the heating system and the increased efficiency of a new boiler may cause causing noisy operation, reduced efficiency and possibly even failure of the boiler. The high efficiency of contemporary boilers, developed to minimise fuel costs and pollution, can leave them vulnerable to problems caused by system debris.







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