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Sentinel x100

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Sentinel x100 quick test - x100,

Sentinel x100 quick test - x100,

£3.31
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Sentinel x100 central - sentinel,

Sentinel x100 central - sentinel,

£13.99
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Sentinel x100 inhibitor system - sentinel,

Sentinel x100 inhibitor system - sentinel,

£57.99
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Sentinel x100 inhibitor - inhibitor, 1l

Sentinel x100 inhibitor - inhibitor, 1l

£59.99
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Sentinel x100 central heating - sentinel,

Sentinel x100 central heating - sentinel,

£16.15
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£10.99
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Sentinel x100 central heating - sentinel,

Sentinel x100 central heating - sentinel,

£10.80
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Sentinel x100 inhibitor - x100, 500ml

Sentinel x100 inhibitor - x100, 500ml

£12.50
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Sentinel x100 rapid dose - rapid,

Sentinel x100 rapid dose - rapid,

£17.50
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£9.99
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Sentinel x100 inhibitor - x100,

Sentinel x100 inhibitor - x100,

£15.99
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£10.80
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Sentinel x100 central heating - sentinel,

Sentinel x100 central heating - sentinel,

£10.80
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Sentinel x100 inhibitor - x100, 1l

Sentinel x100 inhibitor - x100, 1l

£26.99
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Sentinel x100 central - sentinel,

Sentinel x100 central - sentinel,

£10.26
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Sentinel x100 inhibitors - sentinel,

Sentinel x100 inhibitors - sentinel,

£21.50
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Sentinel x100 central - central, heating

Sentinel x100 central - central, heating

£15.99
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£11.86
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Sentinel x100 inhibitor system - sentinel,

Sentinel x100 inhibitor system - sentinel,

£11.86
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Sentinel x100 rapid - sentinel, dose

Sentinel x100 rapid - sentinel, dose

£16.60
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Sentinel x100 rapid - x100, dose

Sentinel x100 rapid - x100, dose

£150.00
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Sentinel x100 quick test - 5, x

Sentinel x100 quick test - 5, x

£18.00
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Sentinel x100 inhibitor - sentinel,

Sentinel x100 inhibitor - sentinel,

£36.99
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Sentinel x100 inhibitors - 1l,

Sentinel x100 inhibitors - 1l,

£16.15
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Sentinel x100 boiler - x100, 1l

Sentinel x100 boiler - x100, 1l

£25.00
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Sentinel x100 concentrated - sentinel,

Sentinel x100 concentrated - sentinel,

£14.85
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Sentinel x100 quick test - quick,

Sentinel x100 quick test - quick,

£16.15
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Sentinel x100 inihibitor and - sentinel,

Sentinel x100 inihibitor and - sentinel,

£29.99
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Sentinel x100 20l boiler - 20l,

Sentinel x100 20l boiler - 20l,

£360.00
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Sentinel boiler protection - sentinel,

Sentinel boiler protection - sentinel,

£49.99
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Sentinel system care - sentinel, pack

Sentinel system care - sentinel, pack

£52.70
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Sentinel x100 rapid dose - x100, rapid-dose

Sentinel x100 rapid dose - x100, rapid-dose

£16.15
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Sentinel x100 400 entity - x100,

Sentinel x100 400 entity - x100,

£46.62
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Sentinel x100 central - sentinel,

Sentinel x100 central - sentinel,

£13.95
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Sentinel x100 rapid dose - x100,

Sentinel x100 rapid dose - x100,

£16.10
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Sentinel x100 inhibitor system - inhibitor,

Sentinel x100 inhibitor system - inhibitor,

£19.99
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Sentinel x100 x1 - x100,

Sentinel x100 x1 - x100,

£29.99
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Sentinel x100 inhibitor - sentinel,

Sentinel x100 inhibitor - sentinel,

£12.75
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Brand new sentinel box - new,

Brand new sentinel box - new,

£142.99
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Sentinel x100 inhibitor system - x100,

Sentinel x100 inhibitor system - x100,

£17.99
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Sentinel x100 inhibitor - x100,

Sentinel x100 inhibitor - x100,

£14.49
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Sentinel vortex 250 filter - sentinel,

Sentinel vortex 250 filter - sentinel,

£73.00
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Sentinel x300 cleaner for new - sentinel,

Sentinel x300 cleaner for new - sentinel,

£8.99
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Sentinel x100 central - 5,

Sentinel x100 central - 5,

£70.00
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£18.99
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Sentinel x100 central heating - central,

Sentinel x100 central heating - central,

£16.99
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Sentinel x100 inhibitor - x100,

Sentinel x100 inhibitor - x100,

£15.99
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Calmag activ8 c100 - activ8, corrosion

Calmag activ8 c100 - activ8, corrosion

£12.49
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Sentinel x100 inhibitor - sentinel,

Sentinel x100 inhibitor - sentinel,

£14.75
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Sentinel x100 inhibitor - 2, x

Sentinel x100 inhibitor - 2, x

£33.25
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Sentinel x100 central - x,

Sentinel x100 central - x,

£119.99
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Sentinel x100 concentrated - x100,

Sentinel x100 concentrated - x100,

£15.45
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Sentinel x800 x100 cleaner - sentinel, (cleaner

Sentinel x800 x100 cleaner - sentinel, (cleaner

£38.95
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Sentinel x100 central - 1l,

Sentinel x100 central - 1l,

£189.95
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Sentinel x100 inhibitor x800 - inhibitor, +

Sentinel x100 inhibitor x800 - inhibitor, +

£33.99
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Sentinel x100 inhibitor system - sentinel,

Sentinel x100 inhibitor system - sentinel,

£15.99
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Sentinel x100 central - central, heating

Sentinel x100 central - central, heating

£18.95
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Sentinel x100 inhibitor - x100, 1l

Sentinel x100 inhibitor - x100, 1l

£57.90
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Brand new sentinel eliminator - brand,

Brand new sentinel eliminator - brand,

£85.99
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Sentinel system care - sentinel, pack

Sentinel system care - sentinel, pack

£139.99
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Sentinel vortex systemcare - sentinel,

Sentinel vortex systemcare - sentinel,

£72.99
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Sentinel eliminator vortex - vortex, 250

Sentinel eliminator vortex - vortex, 250

£74.98
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£16.82
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Sentinel x100 central - sentinel,

Sentinel x100 central - sentinel,

£18.99
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Sentinel 100 inhibitor - 100,

Sentinel 100 inhibitor - 100,

£16.15
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Sentinel x100rd 12x1l - x100rd, ls-12x1l-gb

Sentinel x100rd 12x1l - x100rd, ls-12x1l-gb

£49.99
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£16.04
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Sentinel total guard central - sentinel,

Sentinel total guard central - sentinel,

£60.00
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£22.00
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£21.87
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£11.92
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Sentinel x100 x800 5 - (5, of

Sentinel x100 x800 5 - (5, of

£179.95
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Sentinel x800 central heating - sentinel,

Sentinel x800 central heating - sentinel,

£21.50
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Sentinel x100 concentrated - x100,

Sentinel x100 concentrated - x100,

£14.20
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£25.66
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Sentinel x100 inhibitor x800 - +,

Sentinel x100 inhibitor x800 - +,

£37.95
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Sentinel x100 central - sentinel, heating

Sentinel x100 central - sentinel, heating

£16.50
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New sentinel vortex systemcare - sentinel,

New sentinel vortex systemcare - sentinel,

£83.89
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Sentinel vortex systemcare - vortex,

Sentinel vortex systemcare - vortex,

£99.99
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Sentinel vortex systemcare - vortex,

Sentinel vortex systemcare - vortex,

£114.99
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Sentinel system care pack - sentinel,

Sentinel system care pack - sentinel,

£76.61
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Sentinel systemcare pack - sentinel,

Sentinel systemcare pack - sentinel,

£99.99
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Sentinel v250propk vortex - v250propk-gb,

Sentinel v250propk vortex - v250propk-gb,

£82.99
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Sentinel x100 central - x100,

Sentinel x100 central - x100,

£24.61
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Sentinel system care - system,

Sentinel system care - system,

£99.95
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Sentinel vortex systemcare - sentinel,

Sentinel vortex systemcare - sentinel,

£94.99
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Sentinel x300 cleaner for - sentinel, new

Sentinel x300 cleaner for - sentinel, new

£8.99
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Sentinel high performance - high,

Sentinel high performance - high,

£39.79
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New sentinel eliminator - -,

New sentinel eliminator - -,

£89.00
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Sentinel vortex systemcare - sentinel,

Sentinel vortex systemcare - sentinel,

£99.99
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Sentinel boiler systemcare - sentinel,

Sentinel boiler systemcare - sentinel,

£78.00
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Sentinel systemcare pack - sentinel,

Sentinel systemcare pack - sentinel,

£129.99
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Sentinel vortex300 central - vortex300,

Sentinel vortex300 central - vortex300,

£82.85
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Sentinel x100 central heating - x100,

Sentinel x100 central heating - x100,

£12.99
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Sentinel vortex systemcare - sentinel,

Sentinel vortex systemcare - sentinel,

£69.99
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Sentinel boiler systemcare - boiler,

Sentinel boiler systemcare - boiler,

£104.69
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Looking for more sentinel x100?

Search eBay live — fresh results filtered for the best value, updated every hour.

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📊96 listings · from £3.31 · avg £48.13
⚠️ These listings were last updated more than 14 days ago. Search for fresh listings

Browse 96 sentinel x100 listings currently in our index. Prices range from £3.31 to £360, with an average of £48.13. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about sentinel x100 →

Try this: modern log burners | rointe | daihatsu radiator | yz radiator | black coal scuttle | kermi radiator | slide control gas fire | flue damper | yeoman stove glass | passat heater motor

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< £25 £25 – £50 £50 – £100 £100 – £200 £200 – £500 > £500

Everything you need to know about sentinel x100

Whether you are looking for a brand-new or second-hand sentinel x100, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £3.31, while premium listings can reach £360 — giving you a wide budget spread to work with. The average price of £48.13 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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