Heating Symptoms

Identify what your system is telling you—and whether a professional power flush is the right fix.

Cold Radiators

Cold at the bottom but warm at the top? Sludge is blocking circulation.

Banging or kettling noises often mean scale and sludge in the heat exchanger.

Dark water when bleeding means internal corrosion and magnetite sludge.

Trapped gas from corrosion can mimic air locks at the top of radiators.

Radiators taking over an hour to warm up? Circulation is restricted by sludge.