A powerflush is a specialised technique, utilising specialised equipment, to clean the inside of central heating systems, including radiators, boiler, pipework & hot water coil (if present). A powerflushing machine is connected to the heating system and then pumps the cleaning chemicals and water around the system to clean and remove debris/sludge.
This will depend upon a number of factors, but the 2 main to consider are number of radiators and condition of the existing system. Most systems, up to 10 radiators, can be cleaned in around 5-6 hours. Larger systems require more flushing time, we can usually flush up to 18 radiators in one working day.
Powerflushing does not increase the system pressure, it works on flow rate – increasing the rate water flows through the system to dislodge and remove debris/sludge. Most central heating pumps operate at around 12/14 litres per minute, our equipment is able to operate at around 150 litres per min. The increased flow rate helps to move the debris from the low-flow areas and into the machine for removal.
As powerflushing does not increase the pressure in the system it wont directly cause any issues within your system, what may happen is that when debris is cleaned out of the system, the debris may have been the only barrier holding back water in a weak spot. Our engineer will fully explain all risks on your system, and if any weak spots are noticed, we will rectify while on site.