Power Flush Cost — Is It Worth It?

Power Flush Cost Guide

A power flush costs between £300 and £600 for an average home, depending on the number of radiators and the level of sludge build-up.

Signs You Need a Power Flush

• Cold spots on radiators (usually at the bottom)
• Boiler making banging or kettling noises
• System taking a long time to heat up
• Radiators need bleeding frequently
• Black sludge when bleeding radiators

Power Flush vs Chemical Flush

A power flush is more thorough but costs more. A chemical flush (£100–£200) uses cleaning fluid circulated through the system and is suitable for milder contamination.