Power flushing across Ireland
Remove sludge and scale from your central heating system. Improve efficiency, reduce bills, and extend your boiler life. Local plumbers across all 26 counties.
Why systems need flushing
What is power flushing and why does it matter?
Over time, central heating systems accumulate magnetite sludge, limescale, and corrosion debris. This settles in radiators and pipework, reducing heat output, increasing fuel bills, and overloading your boiler pump.
Power flushing uses a high-flow, low-pressure machine to dislodge and flush this debris out of the system entirely. A good flush followed by a corrosion inhibitor can add years to a boiler's life.
- Cold or slow-to-heat radiators
- Discoloured water when bleeding radiators
- Noisy boiler or pump (kettling)
- Boiler cutting out repeatedly
- Radiators hot at top, cold at bottom
- High gas bills for the heat output produced
The process
What happens during a power flush
System assessment
The engineer will check the condition of your system, identify cold radiators, and test for sludge. Heavily corroded systems with leaking radiators may need repairs before flushing.
Chemical treatment
A descaler and sludge breaker are added to the system and circulated before flushing begins. This loosens compacted deposits and makes the flush more effective.
High-flow flush
The power flush machine is connected to the system and each radiator is flushed individually until the water runs clear. This typically takes 4–8 hours for an average home.
Inhibitor and testing
Once clean, a corrosion inhibitor is added to protect the system going forward. All radiators are tested, the system is balanced, and a test certificate is issued.
Cost guide
Power flushing costs in Ireland 2026
Power flushing costs in Ireland depend on the size of your home and the number of radiators on the system. The table below gives typical 2026 price ranges from heating engineers across all 26 counties. Larger or more complex systems may cost more, so always request a written quote before work begins.
| Property size | Typical cost | Radiator count |
|---|---|---|
| Small home (2 bed) | €400–€600 | Up to 6 radiators |
| Mid-size home (3–4 bed) | €600–€900 | 7–10 radiators |
| Large home (5+ bed) | €900–€1,400 | 11–16 radiators |
| MagnaCleanse filter fitting | +€150–€280 | Highly recommended post-flush |
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