The water in the heating system can be considered as a closed circle, where the same water circulates through the boiler which heats up the radiator pushed by the circulating pump.
Constant thermal actions over the years cause the water to become acidic which will corrode all metal components producing metal particles, sludge which will damage radiators,pump ,valves,and boiler to failure. With the help of powerful magnets in combination with proper chemicals a correct PH of the water can be achieved.
This procedure is noisy , takes at least a full day of work. An inspection visit and pretreatment is required to achieve the best results.
Up to 10 radiators £450, up to 20 radiators £650. Chemicals included.