Sentinel
Sentinel X100 inhibitor 20L
Sentinel X100 central heating inhibitor, 20-litre drum, protecting closed heating systems from corrosion and limescale.
At a glance
- Also known as SENTINELX100_20L
AvailabilityCall for price
Availability: ask us. We can source this part.
Call for price and availability
Our team will check live stock and give you a price on the phone.
01302 279234Opening hours
- Mon–Fri
- 7:30am–5pm
- Sat
- 9am–12pm
- Sun
- Closed
Or request a price online
Tell us what you need and we will come back to you. No payment is taken.
30-day returns
Unused, in original packaging.
What it is
Sentinel X100 is a liquid corrosion and limescale inhibitor for central heating systems, supplied here as a 20-litre drum (part X100L-20L-DRUM). It protects clean, closed heating systems from corrosion and scale to maintain efficiency and reduce fuel use.
Signs this part needs replacing
- System water runs black or sludgy when drained
- Radiators cold at the bottom or need frequent bleeding
- Boiler noise (kettling) increasing over time
- No inhibitor test result on record from the last service
Before you order
- Confirm the drum's dose rate against your system volume with the manufacturer's dosing guidance before adding
- Check the system is not still contaminated with old inhibitor or flushing chemical residue
- Should be added by a competent heating engineer as part of a system fill or power flush
Compliance
| Alternative numbers | SENTINELX100_20L |
|---|
No fitment data held for this part.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.