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Vaillant ecofit pure - ecofit,

Vaillant ecofit pure - ecofit,

£208.70
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Vaillant eco fit pure - vaillant,

Vaillant eco fit pure - vaillant,

£115.10
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306759 vaillant time switch - vaillant,

306759 vaillant time switch - vaillant,

£39.19
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Vaillant ecotec plus - vaillant, 615

Vaillant ecotec plus - vaillant, 615

£52.70
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Vaillant ecotec plus 824 - ecotec,

Vaillant ecotec plus 824 - ecotec,

£89.10
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Vaillant 193593 fan - fan, ecotec

Vaillant 193593 fan - fan, ecotec

£73.50
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Vaillant 0020048969 control - vaillant,

Vaillant 0020048969 control - vaillant,

£18.00
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Vaillant ecotec plus - vaillant,

Vaillant ecotec plus - vaillant,

£182.70
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Vaillant filter advance boiler - filter,

Vaillant filter advance boiler - filter,

£312.70
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Vaillant pressure gauge 180982 - vaillant,

Vaillant pressure gauge 180982 - vaillant,

£26.40
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Boiler control board - control, pcb

Boiler control board - control, pcb

£99.50
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Vaillant degree boiler flue - 90,

Vaillant degree boiler flue - 90,

£44.88
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Vaillant ecotec pro - vaillant, 28

Vaillant ecotec pro - vaillant, 28

£21.57
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Vaillant ecotec pro 28 - ecotec, 24

Vaillant ecotec pro 28 - ecotec, 24

£16.20
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Vaillant 0010035819 filter - 0010035819,

Vaillant 0010035819 filter - 0010035819,

£167.10
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Vaillant 181051 expansion - vaillant,

Vaillant 181051 expansion - vaillant,

£34.99
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Vaillant ecotec plus - ecotec, &

Vaillant ecotec plus - ecotec, &

£38.99
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Vaillant brass diverter - brass,

Vaillant brass diverter - brass,

£26.70
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Vaillant ecotec pro - ecotec, vuw

Vaillant ecotec pro - ecotec, vuw

£60.00
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Vaillant ecotec pro - vaillant, 24

Vaillant ecotec pro - vaillant, 24

£34.99
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Vaillant flue gas extractor - vaillant,

Vaillant flue gas extractor - vaillant,

£52.70
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Vaillant ecotec plus 824 831 - vaillant,

Vaillant ecotec plus 824 831 - vaillant,

£48.99
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Vaillant ecotec pro - 24, &

Vaillant ecotec pro - 24, &

£33.90
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Vaillant pcb control board - pcb,

Vaillant pcb control board - pcb,

£83.90
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Vaillant central heating - central,

Vaillant central heating - central,

£74.39
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Vaillant 845 sigma gas - 845,

Vaillant 845 sigma gas - 845,

£56.76
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Vaillant ecofit pure boiler - vaillant,

Vaillant ecofit pure boiler - vaillant,

£39.98
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Vaillant ecotec pro 28 - 24,

Vaillant ecotec pro 28 - 24,

£9.99
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0020221616 vaillant ecotec - ,

0020221616 vaillant ecotec - ,

£70.99
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Vaillant standard horizontal - vaillant,

Vaillant standard horizontal - vaillant,

£169.45
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Gas boiler installation all - boiler,

Gas boiler installation all - boiler,

£567.70
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Vaillant boiler protection kit - vaillant,

Vaillant boiler protection kit - vaillant,

£167.10
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Vaillant ecotec pro - ecotec, pro/plus

Vaillant ecotec pro - ecotec, pro/plus

£79.99
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Vaillant ecotec plus - vuw, 824

Vaillant ecotec plus - vuw, 824

£12.99
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Vaillant ecotec vuw pro - ecotec, 24

Vaillant ecotec vuw pro - ecotec, 24

£8.75
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Vaillant ecotec plus pro - ecotec,

Vaillant ecotec plus pro - ecotec,

£9.75
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Vaillant timeswitch 150 - vaillant,

Vaillant timeswitch 150 - vaillant,

£49.99
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Vaillant vr33 opentherm - vaillant, module

Vaillant vr33 opentherm - vaillant, module

£135.90
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Vaillant ecotec plus - vaillant,

Vaillant ecotec plus - vaillant,

£99.99
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Vaillant 178983 boiler pump - vaillant,

Vaillant 178983 boiler pump - vaillant,

£49.99
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Vaillant ecotec pro - pro, 24,

Vaillant ecotec pro - pro, 24,

£58.20
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Vaillant ecotec plus 824 - vaillant,

Vaillant ecotec plus 824 - vaillant,

£32.00
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Vaillant connection tube - connection,

Vaillant connection tube - connection,

£10.80
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Vaillant pcb genuine part - vaillant,

Vaillant pcb genuine part - vaillant,

£89.10
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Vaillant ecotec vuw - vuw, 28

Vaillant ecotec vuw - vuw, 28

£37.51
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Vaillant ecotec plus 832 - ecotec, vuw

Vaillant ecotec plus 832 - ecotec, vuw

£57.00
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Vaillant ecotec plus boiler - ecotec,

Vaillant ecotec plus boiler - ecotec,

£57.48
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Vaillant turbomax plus 824e - vaillant,

Vaillant turbomax plus 824e - vaillant,

£59.99
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Vaillant ecotec pro - 24, &

Vaillant ecotec pro - 24, &

£24.61
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Vaillant boiler protection kit - boiler,

Vaillant boiler protection kit - boiler,

£130.70
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Vaillant 0020010292 handle - 0020010292,

Vaillant 0020010292 handle - 0020010292,

£10.00
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Vaillant insulated wh95 - 2”,

Vaillant insulated wh95 - 2”,

£175.00
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Vaillant printed circuit - vaillant,

Vaillant printed circuit - vaillant,

£89.10
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Vaillant ecotec plus - vaillant,

Vaillant ecotec plus - vaillant,

£39.99
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Vaillant ecotec pro 28 - ecotec,

Vaillant ecotec pro 28 - ecotec,

£24.67
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Vaillant ecotec plus 612 824 - ecotec, 612,

Vaillant ecotec plus 612 824 - ecotec, 612,

£46.61
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Vaillant ecotec pro - vaillant, 24

Vaillant ecotec pro - vaillant, 24

£34.00
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Vaillant ecotec assembly - vaillant,

Vaillant ecotec assembly - vaillant,

£52.70
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Vaillant ecotec plus - vaillant,

Vaillant ecotec plus - vaillant,

£38.99
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Vaillant ecotec flexible - vaillant,

Vaillant ecotec flexible - vaillant,

£13.99
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Vaillant 0020132683 brass - vaillant,

Vaillant 0020132683 brass - vaillant,

£47.50
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Vaillant time switch 160 - vaillant,

Vaillant time switch 160 - vaillant,

£94.30
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Vaillant ecotec pro 28 - vaillant, 24

Vaillant ecotec pro 28 - vaillant, 24

£13.95
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Vaillant ecotec pro 28 - ecotec,

Vaillant ecotec pro 28 - ecotec,

£8.85
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Vaillant ecotec pro 28 - ecotec, 24

Vaillant ecotec pro 28 - ecotec, 24

£42.42
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Vaillant ecotec plus - vaillant, plus,

Vaillant ecotec plus - vaillant, plus,

£19.99
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Vaillant time switch 130 24hr - switch,

Vaillant time switch 130 24hr - switch,

£36.99
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Vaillant diverter valve - vaillant,

Vaillant diverter valve - vaillant,

£50.00
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Vaillant ecotec plus - plus, vuw

Vaillant ecotec plus - plus, vuw

£18.40
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Vaillant ecotec plus 824 831 - plus,

Vaillant ecotec plus 824 831 - plus,

£62.15
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Vaillant ecotec plus 824 831 - plus,

Vaillant ecotec plus 824 831 - plus,

£32.56
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Vaillant ecolevel plus - ecolevel,

Vaillant ecolevel plus - ecolevel,

£125.50
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Vaillant time switch 110 - vaillant,

Vaillant time switch 110 - vaillant,

£8.66
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Vaillant turbomax pro 28e - pro,

Vaillant turbomax pro 28e - pro,

£260.70
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Vaillant ecotec pro plus - vaillant,

Vaillant ecotec pro plus - vaillant,

£26.89
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Vaillant ecotec pro - vaillant,

Vaillant ecotec pro - vaillant,

£25.19
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Vaillant ecotec pro 28 - vaillant, 24

Vaillant ecotec pro 28 - vaillant, 24

£156.70
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Vaillant ecotec pro - pro, &

Vaillant ecotec pro - pro, &

£37.48
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Vaillant ecotec expansion - vaillant,

Vaillant ecotec expansion - vaillant,

£49.99
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Vaillant 0020116882 timeswitch - vaillant,

Vaillant 0020116882 timeswitch - vaillant,

£68.99
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Vaillant 981227 ecotec plus - ecotec,

Vaillant 981227 ecotec plus - ecotec,

£11.19
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Vaillant 0020219517 standard - vaillant,

Vaillant 0020219517 standard - vaillant,

£78.70
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Vaillant ecotec pro 28 - vaillant,

Vaillant ecotec pro 28 - vaillant,

£10.89
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Boiler pro control knob - control,

Boiler pro control knob - control,

£9.75
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Vaillant ecotec plus - ecotec, boiler

Vaillant ecotec plus - ecotec, boiler

£208.70
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Vaillant ecotec pro - pro, &

Vaillant ecotec pro - pro, &

£13.60
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Vaillant eco tec plus - vaillant,

Vaillant eco tec plus - vaillant,

£21.61
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Boiler flue rain snow - rain,

Boiler flue rain snow - rain,

£9.99
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Vaillant ecotec plus boiler - vaillant,

Vaillant ecotec plus boiler - vaillant,

£67.98
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Vaillant ecomax ecotec - ecomax, /

Vaillant ecomax ecotec - ecomax, /

£10.00
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Vaillant 0020244433 display - vaillant,

Vaillant 0020244433 display - vaillant,

£25.22
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Vaillant ecotec pro plus - 28, &

Vaillant ecotec pro plus - 28, &

£82.47
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Vaillant vr33 opentherm module - vr33,

Vaillant vr33 opentherm module - vr33,

£187.90
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Vaillant ecotec plus 612 615 - 612,

Vaillant ecotec plus 612 615 - 612,

£189.99
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Vaillant ecotec plus pcb - ecotec,

Vaillant ecotec plus pcb - ecotec,

£184.99
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Vaillant 178988 flow sensor - vaillant,

Vaillant 178988 flow sensor - vaillant,

£14.99
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📊96 listings · from £8.66 · avg £71.71
⚠️ These listings were last updated more than 13 days ago. Search for fresh listings

Browse 96 vaillant boiler listings currently in our index. Prices range from £8.66 to £567.7, with an average of £71.71. 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 vaillant boiler →

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Everything you need to know about vaillant boiler

Whether you are looking for a brand-new or second-hand vaillant 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 £8.66, while premium listings can reach £567.7 — giving you a wide budget spread to work with. The average price of £71.71 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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