To power flush or not to power flush that is the question?

Power flushing may be required if your system is slow to heat up, you have cold spots on radiators, the pump or motorised valves keep breaking down and need replacing, the boiler is noisy .The hot water temperature is poor.

What causes these problems in the first place?

There are many reasons, poor system design, poorly maintained boilers, pumping over of water from vent pipe to feed tank, old radiators that are not cleaned when fitted to a system or new boiler installed on a system that has not been cleaned. Leaks that are left unattended.Etc..

Most central heating systems have steel radiators, copper pipework and when you add water it results in a chemical reaction which creates iron oxide sludge. In severe cases this sludge can completely ruin a heating system, so it is vital that it is removed and ensure that it cannot happen again.

Here we explain step by step what exactly is involved in a powerflush process based on a combination boiler system:-

Arrive at property and unload, setup powerflush machine. Locate drain valve for central heating, open drain valve and allow water to drain until boiler reads 0 bar pressure.Connect flow/return hoses from powerflush machine to flow/ return pipework at boiler. Connect dump hoses to machine and terminate open end to suitable drain or toilet. Connect water supply hose to machine. Fill powerflush machine until correct water level acheived. Connect electrical supply to machine. Close drain valve, turn on machine and allow water to circulate. Bleed air from radiators. Top up water as required, circulate for approx 10-15 minutes while reversing flow. Add suitable chemical to machine and continue to circulate. Switch off all radiators except the nearest one ( or furthest), open valves including lockshields to maximum on radiator so that it gets full flow from the machine. Reverse flow for about 10 minutes, when ready close this rad and move to the next one , repeat the process until all radiators are done. When you reach the last rad, the water should be dumped to the drain and new water added through the powerflush machine, this should be done until the water is perfectly clean, reversing the flow as you go. The radiator may need vibrating to help with the removal of any deposits, when it is clear, turn off and repeat on the next rad, continue this until all radiators are clean. When finished open all radiators and flush complete system with clean water, test for neutral acidity, when it is neutral add inhibitor to system. Disconnect powerflush machine from system.

Refill central heating system and purge air from each radiator and boiler, test to ensure correct operation.

Your central heating radiators will now be restored to maximum efficiency and provide the correct heat output. Remember that if you drain your system in the future or have a leak to top up the inhibitor as this will protect the system from future problems.

 Our prices depend on the size of the system, type of boiler etc. please call for a quote.

We give a 2 year guarantee on our power flush.

Please note sometimes power flushing is not required, do not take just 1 persons word for it, get a second opinion if you can.

We can inspect your system and advise you if it is needed or not. So please call.      

Registered office: 45 Fairby Road, Lee, London SE12 8JP