george crawford asked ... Citroen C3 Picasso?    |    Maggie asked ... How can i mend my kettle?    |    Anthony asked ... Can a crack be repaired?    |    adrew asked ... Radio no sound?    |    Wayne asked ... Kd14ss program button?    |    Click here to ask your question

noise from ch ?

when we switch on the ch it makes a bubbling noiseafter a while
derek, November 2011
Could be air in system - bleed rads & any other points. If it is an old boiler, there maybe local spots inside which produce localised boiling. Could try de-scaling system with chemical de-scaler.

davidj, November 2011