When Bleeding the Radiators Isn't Enough
A proper power flush clears years of sludge and debris, restoring efficiency and protecting your boiler.
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Signs you might need one
- Cold spots at the bottom of radiators
- Noisy boiler (kettling)
- Boiler working harder than it should
- Black or discoloured water when bleeding a radiator
- Uneven heating across the house
Read the full guide on telling a flush from a simple bleed →
What's involved
A specialist pump and chemical cleaner flush the system through, radiator by radiator, clearing out built-up sludge. It's worth doing before a new boiler install as much as on an older system — protects the investment either way.
When we'd say no
If the real fix is a bleed or a balance, that's what we'll recommend instead — we won't sell you a flush you don't need.