The system water should be assessed and appropriately cleaned as part of a professional boiler replacement. Connecting a new boiler to contaminated water can carry existing debris into the new appliance and reduce performance or reliability.
The amount of cleaning needed depends on the condition of the system. A relatively clean, well-maintained circuit may only need the standard cleaning and chemical treatment specified for the installation. A system with cold radiator sections, very dirty water, circulation problems or repeated component blockages may need more extensive remedial work.
Doherty's Glasgow boiler packages include MagnaCleanse cleaning, chemical treatment and a magnetic filter for a standard replacement. Any additional system work identified during the survey can then be separated clearly from the basic package.
