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Ehc comet electric system - electric,

Ehc comet electric system - electric,

£700.00
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Ideal vogue max system s32 - ideal,

Ideal vogue max system s32 - ideal,

£1449.99
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Worcester white wall mounted - worcester, wall-mounted

Worcester white wall mounted - worcester, wall-mounted

£233.94
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Worcester–Baxi–Vaillant–

Worcester–Baxi–Vaillant–

£399.00
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Baxi assure gas system boiler - gas,

Baxi assure gas system boiler - gas,

£650.00
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Adey magnacleanse rapid flush - adey,

Adey magnacleanse rapid flush - adey,

£414.70
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Ehc comet electric system - electric,

Ehc comet electric system - electric,

£516.70
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Viessmann vitodens b1hc gas - viessmann,

Viessmann vitodens b1hc gas - viessmann,

£58.37
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Baxi main potterton - potterton, 7855245

Baxi main potterton - potterton, 7855245

£83.87
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Heating inhibitor boiler - inhibitor, 1l

Heating inhibitor boiler - inhibitor, 1l

£8.95
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Worcester greenstar danesmoor - worcester,

Worcester greenstar danesmoor - worcester,

£1862.44
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Ehc comet electric system - comet,

Ehc comet electric system - comet,

£669.70
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Worcester bosch greenstar - bosch,

Worcester bosch greenstar - bosch,

£28.00
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Baxi 818 system boiler - baxi,

Baxi 818 system boiler - baxi,

£1099.00
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Worcestershire bosch erp - worcestershire,

Worcestershire bosch erp - worcestershire,

£414.70
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Worcester bosch greenstar 24i - worcester,

Worcester bosch greenstar 24i - worcester,

£52.70
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Worcester greenstar 30i erp - 30i,

Worcester greenstar 30i erp - 30i,

£1499.00
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Worcester bosch greenstar - worcester,

Worcester bosch greenstar - worcester,

£138.00
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Concentrated inhibitor central - concentrated,

Concentrated inhibitor central - concentrated,

£7.29
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Adey magnaclean professional - adey,

Adey magnaclean professional - adey,

£26.70
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Baxi assure gas - baxi, boiler

Baxi assure gas - baxi, boiler

£440.20
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Worcester greenstar mini - worcester,

Worcester greenstar mini - worcester,

£130.00
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Ideal heating logic max s15 - ideal,

Ideal heating logic max s15 - ideal,

£1093.78
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Reliable pressure relief - pressure,

Reliable pressure relief - pressure,

£4.85
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Heating inhibitor 500ml - heating,

Heating inhibitor 500ml - heating,

£7.99
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Worcester system filter - system,

Worcester system filter - system,

£198.30
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Worcester bosch 24ri erp - 24ri,

Worcester bosch 24ri erp - 24ri,

£260.70
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Main eco compact - eco, system

Main eco compact - eco, system

£99.99
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Vaillant ecofit 415 - 415, system

Vaillant ecofit 415 - 415, system

£125.50
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Ideal logic max heat h18 - ideal,

Ideal logic max heat h18 - ideal,

£124.46
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Vaillant ecotec plus 635 35kw - vaillant,

Vaillant ecotec plus 635 35kw - vaillant,

£1960.00
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System boiler vaillant ecotec - boiler,

System boiler vaillant ecotec - boiler,

£94.30
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Main eco compact - 15, 18

Main eco compact - 15, 18

£84.00
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Concentrated inhibitor boiler - concentrated,

Concentrated inhibitor boiler - concentrated,

£7.65
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Worcester bosch greenstar - worcester,

Worcester bosch greenstar - worcester,

£24.62
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Worcester bosch greenstar - bosch,

Worcester bosch greenstar - bosch,

£16.15
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Strom 11kw electric - v2, boiler

Strom 11kw electric - v2, boiler

£618.70
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Worcester 7733600266 greenstar - worcester,

Worcester 7733600266 greenstar - worcester,

£120.30
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Ideal logic system - logic, boiler

Ideal logic system - logic, boiler

£260.70
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Gas fire back - , baxi

Gas fire back - , baxi

£104.70
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Worcester danesmoor system - worcester,

Worcester danesmoor system - worcester,

£1600.00
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Valiant eco tech - valiant,

Valiant eco tech - valiant,

£363.70
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Worcester greenstar 30i 30ri - worcester,

Worcester greenstar 30i 30ri - worcester,

£56.16
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Ideal combi system - 24,, 30,

Ideal combi system - 24,, 30,

£63.10
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Ideal logic combi - ideal,

Ideal logic combi - ideal,

£94.30
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Ltr sentinel central - sentinel,

Ltr sentinel central - sentinel,

£8.12
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Ideal 175576 logic - ideal,

Ideal 175576 logic - ideal,

£42.30
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Vaillant ecofit pure - ecofit,

Vaillant ecofit pure - ecofit,

£260.70
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Vaillant eco tec plus - vaillant,

Vaillant eco tec plus - vaillant,

£414.70
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Vaillant 178973 ecotec - 178973,

Vaillant 178973 ecotec - 178973,

£32.66
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Sime ecomfort 25he 30he - sime,

Sime ecomfort 25he 30he - sime,

£46.74
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Ideal logic system - ideal,

Ideal logic system - ideal,

£19.99
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Viessmann boiler temperature - viessmann,

Viessmann boiler temperature - viessmann,

£11.33
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Adey magnaclean professional - magnaclean,

Adey magnaclean professional - magnaclean,

£29.82
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New worcester greenstar - worcester,

New worcester greenstar - worcester,

£2650.98
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Underfloor heating brass - heating,

Underfloor heating brass - heating,

£389.00
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Baxi system boiler gas lpg - system,

Baxi system boiler gas lpg - system,

£999.99
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Ideal vogue s15 32 ie - vogue,

Ideal vogue s15 32 ie - vogue,

£13.95
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Heating inhibitor 25l - heating,

Heating inhibitor 25l - heating,

£133.28
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Ideal logic system 24 - system,

Ideal logic system 24 - system,

£12.75
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Baxi system 28 - &,

Baxi system 28 - &,

£8.65
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A100 concentrated inhibitor - a100, 1l

A100 concentrated inhibitor - a100, 1l

£8.79
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Ideal logic plus - 24, 30

Ideal logic plus - 24, 30

£14.84
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Worcester greenstar magnetic - greenstar,

Worcester greenstar magnetic - greenstar,

£156.70
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Worcester bosch greenstar - worcester,

Worcester bosch greenstar - worcester,

£16.15
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Ideal system 30 - 18, 24

Ideal system 30 - 18, 24

£4.35
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Magnetic boiler filter - magnetic,

Magnetic boiler filter - magnetic,

£72.54
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Boiler 12v 24v - ,

Boiler 12v 24v - ,

£329.00
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Ideal logic system heat - logic, +

Ideal logic system heat - logic, +

£19.95
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Biworld professional heating - biworld,

Biworld professional heating - biworld,

£49.00
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Concentrated inhibitor boiler - inhibitor,

Concentrated inhibitor boiler - inhibitor,

£130.90
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Ideal logic combi plus - ideal, 30

Ideal logic combi plus - ideal, 30

£60.99
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Ideal logic max system2 front - ideal,

Ideal logic max system2 front - ideal,

£167.09
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Central heating magnetic - heating,

Central heating magnetic - heating,

£45.99
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Baxi system 60 100 - system, 60/100

Baxi system 60 100 - system, 60/100

£45.60
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Potterton promax 18 24 - potterton, 15

Potterton promax 18 24 - potterton, 15

£34.80
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Worcester greenstar 8000 - 8000, style

Worcester greenstar 8000 - 8000, style

£9.61
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Worcester greenstar 30si - worcester,

Worcester greenstar 30si - worcester,

£30.59
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Worcester greenstar 27i - greenstar, erp

Worcester greenstar 27i - greenstar, erp

£1299.00
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Baxi system boiler - system,

Baxi system boiler - system,

£26.48
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Fernox central heating - fernox,

Fernox central heating - fernox,

£13.59
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Tower 22mm copper air - 22mm,

Tower 22mm copper air - 22mm,

£12.94
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Concentrated leak sealer - leak,

Concentrated leak sealer - leak,

£7.29
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Potterton system 12kw - system, 15kw

Potterton system 12kw - system, 15kw

£77.52
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Used worcester greenstar 25i - used,

Used worcester greenstar 25i - used,

£24.99
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Brand new fernox power - new,

Brand new fernox power - new,

£322.90
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Worcester greenstar 30i 30ri - greenstar,

Worcester greenstar 30i 30ri - greenstar,

£50.99
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175569 ideal logic combi - 175569,

175569 ideal logic combi - 175569,

£57.97
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Glow worm power system filter - glow-worm,

Glow worm power system filter - glow-worm,

£94.30
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Baxi 818 824 system 825 - 818, &

Baxi 818 824 system 825 - 818, &

£90.00
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Worcester greenstar cdi - worcester,

Worcester greenstar cdi - worcester,

£106.71
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Ideal logic system - plus, 15

Ideal logic system - plus, 15

£12.99
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Baxi system 24 - 15, 18

Baxi system 24 - 15, 18

£8.95
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Ideal isar 15 - isar, 12

Ideal isar 15 - isar, 12

£50.00
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Worcester bosch greenstar 8000 - worcester,

Worcester bosch greenstar 8000 - worcester,

£1599.00
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Logic system boiler - system, 15

Logic system boiler - system, 15

£125.50
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📊96 listings · from £4.35 · avg £297.09
⚠️ These listings were last updated more than 26 days ago. Search for fresh listings

Browse 96 system boiler listings currently in our index. Prices range from £4.35 to £2650.98, with an average of £297.09. 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 system boiler →

Try this: under sink unvented water heater | vaillant ecotec combi boiler | vaillant ecotec fan | vaillant ecotec pcb | vaillant ecotec plus 831 | vaillant ecotec pro 28 | vaillant ecotec pump | vaillant pro 28 boiler | vaillant vcw 242 | vitodens

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Everything you need to know about system boiler

Whether you are looking for a brand-new or second-hand system boiler, 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 £4.35, while premium listings can reach £2650.98 — giving you a wide budget spread to work with. The average price of £297.09 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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