Our engineers will first ask if the radiators are fully heating with no cold spots near the bottom, cold spots at the top are more likely trapped air. We can also take thermal images using our thermal imaging equipment as the radiators may be too far gone and old to power flush.

This may be true in an old gravity fed system where pipe work has been poorly installed or by using compression fittings. We would always check first before advising on a power flush.

No, we would only advise this if the system is heavily contaminated. You would just carry out a standard system flush.