What is a powerflush and do I need one?

Powerflush Explained

A powerflush uses a high-flow pump to push powerful cleaning chemicals through your entire heating system, removing years of built-up sludge and debris.

Signs You Need a Powerflush

• Radiators cold at the bottom (sludge settled)
• Some radiators not heating at all
• Boiler cycling on/off frequently (short cycling)
• Heating takes ages to warm up
• Noisy boiler (kettling sounds)
• Black water when bleeding radiators
• Rising energy bills despite same usage

What's Involved

The Process (4-6 Hours):

1. Connection - Machine connected to heating system
2. Flushing - High-flow water pushes debris through the system
3. Chemicals - Cleaning agents break down sludge and rust
4. Individual Radiators - Each radiator flushed in turn
5. Neutralisation - Chemicals neutralised before final flush
6. Inhibitor - Protective chemical added to prevent future corrosion
7. Filter - Magnetic filter installed to catch future debris

When NOT to Powerflush

• System has significant leaks
• Pipework is extremely old and fragile
• Radiators are badly corroded internally
• System needs replacing anyway

Costs and Value

• Typical cost: £400-600 for average 3-bed house
• Savings: Up to 25% on heating bills after flush
• Boiler protection: Extends boiler life by reducing strain
• Comfort: Faster, more even heating throughout home

Alternatives

• Chemical flush - Milder treatment, less effective, lower cost
• Magna cleanse - Similar to powerflush with filtering
• Individual radiator flush - Remove and hose out single radiator

After Your Powerflush

• Check inhibitor levels annually (we do this during boiler service)
• Keep magnetic filter clean (check every year)
• Address any leaks promptly (they let air in which causes more rust)

NK Gas Services uses professional Kamco powerflush equipment. Call 07404 922458 for a free assessment.