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B&Q£20.59Visit shop B&Q - 2X H&v Controls Hv800 Heavy Duty Central Heating System Cleaner 1 Litre
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This 2-pack of Calmag HV HV800PF Fast Acting Power Flush cleaner is designed for owners of older central heating systems looking to quickly restore efficiency. Its key benefit is the rapid removal of corrosion and scale in just 1 hour, significantly reducing circulation time. A caveat to note is that it cannot clear a completely blocked pipe. Key features include advanced chemical technology for fast cleaning, suitability for cold systems, environmental safety with a biodegradable and non-toxic formula, and corrosion protection during the cleaning process.
| Model Part Number | HV800 |
|---|---|
| Brand | Calmag |
The fast-acting formula works in as little as 1 hour of circulation. For heavily fouled systems, longer circulation may be beneficial.
No, this product is designed to remove corrosion deposits and scale. It will not clear a pipe that is completely blocked with solid debris.
Yes, the cleaner features a unique formulation that works under neutral pH conditions and includes agents that protect system metals against corrosion during cleaning. It is also non-toxic and 100% biodegradable.
Yes, it is highly recommended to add a suitable corrosion inhibitor, such as Calmag HV HV100 Inhibitor, after thoroughly flushing the system and refilling it to protect against future corrosion.
For a typical system with up to 10 radiators, one 1-litre bottle is sufficient. For larger systems or badly fouled systems, it is recommended to use two 1-litre bottles.
Ensure the system was thoroughly flushed and refilled. If problems persist, it may indicate more severe blockages or other system issues that require further investigation or professional servicing.
Ensure the system was thoroughly flushed of all cleaner residue. Check if any pipes were completely blocked, as this product cannot clear total blockages. Consider a second cleaning or a professional powerflush if significant blockages are suspected.
Check all radiator valves, connections, and bleed points. It's possible that the cleaning process has dislodged debris that was previously sealing a minor leak, or that a joint was weakened. Tighten connections as needed and re-check for leaks.
Verify that the central heating pump is running and that all radiator valves are fully open. Ensure the system has been filled correctly and there are no airlocks preventing circulation.
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