SPECIAL OFFERS
Onyx Central Heating Inhibitor ONYXINHIB
Onyx central heating inhibitor supplied in a 500ml bottle for treating water in central heating systems.
£5.86
£4.88 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
Onyx Central Heating Inhibitor is a 500ml liquid treatment for central heating systems. It is added to the system water to help control corrosion and scale within the heating circuit. The product is supplied in a 500ml bottle under the Onyx name.
Signs this part needs replacing
- System water appears dark or discoloured when bled
- Cold spots or uneven heat across radiators
- Sludge or debris found in the system or filter
- Inhibitor concentration reads low on a system test
- The system has recently been drained and refilled
Before you order
- Confirm the system volume so the correct quantity of inhibitor can be added
- Check whether the system has been drained or needs a dosing method
- Check the existing inhibitor type if topping up an already-treated system
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SPECIAL OFFERS Onyx | — | — | — |
Documents & drawings
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