Central Heating Power Flush Cost (2025 Guide)

Power Flush Costs in Peterborough

A professional power flush in Peterborough typically costs between £299 and £500. The price varies based on the number of radiators in your system:

• Up to 5 radiators: £299 – £350
• 6–10 radiators: £350 – £450
• 10+ radiators: £450 – £600

What Is a Power Flush?

A power flush is a deep-clean of your central heating system. A specialist pump forces water and cleaning chemicals through the system at high pressure to remove sludge, rust, and limescale deposits. These deposits build up over time and reduce efficiency.

What's Included in a Power Flush?

• Connection of power flush machine to the system
• Chemical descaler and sludge remover treatment
• Individual radiator flushing with manual agitation
• System neutralisation and corrosion inhibitor dose
• Magnetic filter clean (or installation if not present)
• Report on system condition

Does My System Need a Power Flush?

Signs your system may need a power flush include: cold spots at the bottom of radiators, radiators that take a long time to heat up, discoloured or brown water when bleeding radiators, repeated boiler pressure problems, or a noisy boiler (kettling sound).

How Long Does It Take?

A typical power flush takes 4–8 hours depending on system size and the severity of contamination. Most jobs are completed in a single day.