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Home / Water Heating & Filtration / Back boiler refurbished & used for sale | For Sale UK
Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£59.99
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Baxi multifit 720627001 plume - baxi,

Baxi multifit 720627001 plume - baxi,

£65.00
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0020038679 vaillant eco - 0020038679,

0020038679 vaillant eco - 0020038679,

£105.00
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Worcester greenstar junior 24i - worcester,

Worcester greenstar junior 24i - worcester,

£74.36
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Baxi bermuda back - bermuda,

Baxi bermuda back - bermuda,

£44.95
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Electric tankless instant - electric,

Electric tankless instant - electric,

£27.99
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3000w immersion water - 3000w,

3000w immersion water - 3000w,

£22.98
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Baxi bermuda back - back, firefront

Baxi bermuda back - back, firefront

£15.45
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Vaillant ecotec plus - vaillant, 831

Vaillant ecotec plus - vaillant, 831

£12.75
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Baxi back boiler thermostat - baxi,

Baxi back boiler thermostat - baxi,

£26.70
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Baxi duo tec 33 40 - baxi, 28

Baxi duo tec 33 40 - baxi, 28

£20.85
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3000w electric immersion water - electric,

3000w electric immersion water - electric,

£22.97
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Vaillant boiler service kit - service,

Vaillant boiler service kit - service,

£26.99
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Brand new baxi potterton - brand,

Brand new baxi potterton - brand,

£83.90
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Boiler pump potterton performa - boiler,

Boiler pump potterton performa - boiler,

£48.24
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Solid fuel rayburn - rayburn, back

Solid fuel rayburn - rayburn, back

£1536.70
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Acquapuro wras 5kw digital - acquapuro,

Acquapuro wras 5kw digital - acquapuro,

£137.98
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Wilo pump cable brand - wilo,

Wilo pump cable brand - wilo,

£6.00
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Electric tankless instant hot - tankless,

Electric tankless instant hot - tankless,

£55.89
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Ideal boiler ignitor - ignitor, unit

Ideal boiler ignitor - ignitor, unit

£19.95
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Vaillant ecotec plus 824 831 - ecotec,

Vaillant ecotec plus 824 831 - ecotec,

£14.30
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5kw digital instant boiling - instant,

5kw digital instant boiling - instant,

£149.00
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Baxi bermuda back - back, 25/1

Baxi bermuda back - back, 25/1

£15.45
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Baxi bermuda sp2 sp3 - baxi, renewal

Baxi bermuda sp2 sp3 - baxi, renewal

£88.74
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Baxi bermuda lfe - c2, w

Baxi bermuda lfe - c2, w

£138.00
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Magnetic boiler filter 22mm - magnetic,

Magnetic boiler filter 22mm - magnetic,

£35.95
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Baxi bermuda 401 back - &,

Baxi bermuda 401 back - &,

£159.99
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Baxi duotec 24he bar - baxi,

Baxi duotec 24he bar - baxi,

£19.95
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Danfoss bfp storage - bfp,

Danfoss bfp storage - bfp,

£94.30
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Vaillant ecotec plus 824 - ecotec,

Vaillant ecotec plus 824 - ecotec,

£31.90
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Vaillant ecotec main heat - main,

Vaillant ecotec main heat - main,

£61.94
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0020221616 vaillant ecotec - 0020221616,

0020221616 vaillant ecotec - 0020221616,

£70.99
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Baxi 042818 k36p1323 - baxi,

Baxi 042818 k36p1323 - baxi,

£134.99
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Worcester greenstar 24i - worcester,

Worcester greenstar 24i - worcester,

£15.95
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Baxi bermuda back boiler - baxi,

Baxi bermuda back boiler - baxi,

£10.75
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1500w electric immersion water - immersion,

1500w electric immersion water - immersion,

£16.82
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Ideal esprit eco 30 - 24,

Ideal esprit eco 30 - 24,

£8.95
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Worcester greenstar 25si - greenstar,

Worcester greenstar 25si - greenstar,

£15.32
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Ariston clas premium evo l30 - ariston,

Ariston clas premium evo l30 - ariston,

£69.99
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Worcester return unit manifold - worcester, return-unit

Worcester return unit manifold - worcester, return-unit

£118.97
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Vaillant ecotec plus - 5, 824

Vaillant ecotec plus - 5, 824

£35.00
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Baxi bermuda 401 551 552 - bermuda,

Baxi bermuda 401 551 552 - bermuda,

£9.95
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Worcester bosch pressure - worcester,

Worcester bosch pressure - worcester,

£12.94
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Worcester keyless filling link - worcester,

Worcester keyless filling link - worcester,

£21.50
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Glowworm 0020197555 boiler - glowworm,

Glowworm 0020197555 boiler - glowworm,

£22.40
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Vaillant ecotec pro 28 - ecotec,

Vaillant ecotec pro 28 - ecotec,

£21.57
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Adey magna cleanse - magna, central

Adey magna cleanse - magna, central

£156.70
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Vaillant ecotec pro plus - vaillant,

Vaillant ecotec pro plus - vaillant,

£82.47
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Worcester greenstar junior 24i - junior,

Worcester greenstar junior 24i - junior,

£19.99
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Electric tankless instant hot - electric,

Electric tankless instant hot - electric,

£65.99
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Worcester greenstar oilfit - worcester,

Worcester greenstar oilfit - worcester,

£49.99
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Baxi bermuda back boiler - baxi,

Baxi bermuda back boiler - baxi,

£49.95
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Vokera easy heat plus - easy,

Vokera easy heat plus - easy,

£42.30
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Fernox tf1 service kit - fernox,

Fernox tf1 service kit - fernox,

£5.92
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Plug immersion water heater - uk,

Plug immersion water heater - uk,

£25.59
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Adey magnaclean professional - adey,

Adey magnaclean professional - adey,

£6.49
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Vaillant ecotec plus vuw 824 - plus,

Vaillant ecotec plus vuw 824 - plus,

£8.39
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Vaillant 981227 ecotec - 981227,

Vaillant 981227 ecotec - 981227,

£11.19
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Baxi bermuda sp2 - bermuda, sp3

Baxi bermuda sp2 - bermuda, sp3

£88.74
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Vaillant ecotec pro - vaillant, 28

Vaillant ecotec pro - vaillant, 28

£58.20
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Baxi duotec h28he - 5x,

Baxi duotec h28he - 5x,

£19.95
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Vaillant ecotec plus pro - plus,,

Vaillant ecotec plus pro - plus,,

£19.99
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Baxi bermuda back boilers - baxi, 25/1

Baxi bermuda back boilers - baxi, 25/1

£15.45
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0020038679 vaillant eco 613 - 0020038679,

0020038679 vaillant eco 613 - 0020038679,

£12.50
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Smart thermostat underfloor - smart,

Smart thermostat underfloor - smart,

£21.62
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Worcester greenstar junior - junior, 24i

Worcester greenstar junior - junior, 24i

£103.66
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Potterton prima control - prima,

Potterton prima control - prima,

£22.54
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Ideal boiler service kit - ideal,

Ideal boiler service kit - ideal,

£32.95
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Worcester greenstar highflow - worcester,

Worcester greenstar highflow - worcester,

£16.15
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Adey magnaclean professional2 - magnaclean,

Adey magnaclean professional2 - magnaclean,

£84.00
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Vaillant pro 28 - &,

Vaillant pro 28 - &,

£14.75
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Vaillant ecotec pro 28 - ecotec, 24

Vaillant ecotec pro 28 - ecotec, 24

£24.67
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Baxi back boiler honeywell - baxi,

Baxi back boiler honeywell - baxi,

£135.90
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Vaillant ecotec pro 28 - ecotec,

Vaillant ecotec pro 28 - ecotec,

£38.95
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Ideal spare valve unit - spare, cpl

Ideal spare valve unit - spare, cpl

£52.70
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Plug immersion water heater - uk,

Plug immersion water heater - uk,

£24.99
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Worcester greenstar 24i 28i - worcester,

Worcester greenstar 24i 28i - worcester,

£15.95
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Baxi bermuda vp2 vp3 - ,

Baxi bermuda vp2 vp3 - ,

£88.74
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Genuine worcester greenstar - worcester,

Genuine worcester greenstar - worcester,

£74.99
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Vaillant ecotec plus 612 - vaillant,

Vaillant ecotec plus 612 - vaillant,

£11.35
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Vaillant boiler pump head - pump,

Vaillant boiler pump head - pump,

£71.50
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Ideal domestic logic - ideal, plus

Ideal domestic logic - ideal, plus

£16.35
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Ideal logic plus combi 30 - combi,

Ideal logic plus combi 30 - combi,

£37.64
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Vokera way diverter valve - 3,

Vokera way diverter valve - 3,

£54.48
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Vaillant venturi with - with, mass

Vaillant venturi with - with, mass

£83.90
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1500w electric immersion water - electric,

1500w electric immersion water - electric,

£18.24
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Immersion heater spanner - heater,

Immersion heater spanner - heater,

£7.20
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Potterton suprima 50 - 30, 60

Potterton suprima 50 - 30, 60

£21.99
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Genuine baxi duotec 24he - 2, x

Genuine baxi duotec 24he - 2, x

£18.82
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Worcester t00500087a0 air vent - t00500087a0,

Worcester t00500087a0 air vent - t00500087a0,

£13.99
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Worcester boiler return unit - worcester,

Worcester boiler return unit - worcester,

£80.74
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Worcester greenstar junior 24i - greenstar,

Worcester greenstar junior 24i - greenstar,

£9.99
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Sentinel eliminator vortex300 - sentinel,

Sentinel eliminator vortex300 - sentinel,

£47.50
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Vaillant ecotec exclusive - exclusive, 835

Vaillant ecotec exclusive - exclusive, 835

£159.99
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Worcester greenstar junior - greenstar,

Worcester greenstar junior - greenstar,

£69.75
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Lowara ecocirc 6 - ecocirc, m

Lowara ecocirc 6 - ecocirc, m

£57.90
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📊96 listings · from £5.92 · avg £63.37

Browse 96 back boiler listings currently in our index. Prices range from £5.92 to £1536.7, with an average of £63.37. 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 back boiler →

Try this: combi boilers baxi | combi boilers | oil boiler external | morphy richards hot water dispenser | 2 port motorised valve | 2kw water heater | 3kw water heater | baxi solo parts | baxi solo 2 boiler | baxi combi 80 eco

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Everything you need to know about back boiler

Whether you are looking for a brand-new or second-hand back 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 £5.92, while premium listings can reach £1536.7 — giving you a wide budget spread to work with. The average price of £63.37 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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