Gas water heater
Gas water heater for sale on Ireland's largest auction and classifieds sites
18l 5gpm natural propane - 18l, - £126.90
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
20l tankless lpg liquid - 20l, - £139.90
You get instant • Endless hot water • Are 20l tankless - Free postage - New and Used
You get instant • Endless hot water • Are 20l tankless - Free postage - New and Used
18l 5gpm tankless - 18l, natural - £126.90
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
20l lpg propane gas - lpg, - £120.90
You get instant • Endless hot water • Are 16l 18l - Free postage - New and Used
You get instant • Endless hot water • Are 16l 18l - Free postage - New and Used
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Portable lpg propane gas - gas, hot - £80.99
Gas type lpg • Propane after installing • Water heater doesn - Free postage - New and Used
Gas type lpg • Propane after installing • Water heater doesn - Free postage - New and Used
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48 listings · from £45.05 · avg £186.83
⚠️ These listings were last updated more than 12 days ago.
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Browse 48 gas water heater listings currently in our index. Prices range from £45.05 to £829.99, with an average of £186.83. 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 gas water heater →
10l 12l 18l tankless - 6l, - £144.99
Lpg gas propane • Water heater • 10l 2.6 gpm - Free postage - New and Used
Lpg gas propane • Water heater • 10l 2.6 gpm - Free postage - New and Used
18l 36kw lpg propane - 36kw, - £123.90
Hot water heater • You get instant • Are 36kw 18l - Free postage - New and Used
Hot water heater • You get instant • Are 36kw 18l - Free postage - New and Used
Excel gpm tankless - excel, - £189.00
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
18l 5gpm natural - 5gpm, - £126.90
Model 18l natural • Gas water inlet • Heater type tankless - Free postage - New and Used
Model 18l natural • Gas water inlet • Heater type tankless - Free postage - New and Used
Excel gpm cobremax - excel, - £139.00
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
130 000 btu propane gas - 130,000, - £196.99
This propane tankless • Water heater automatically • Shuts down risks - Free postage - New and Used
This propane tankless • Water heater automatically • Shuts down risks - Free postage - New and Used
12l tankless natural - tankless, - £139.99
This fully featured • Water heater that • Uses lpg liquefied - Free postage - New and Used
This fully featured • Water heater that • Uses lpg liquefied - Free postage - New and Used
18l 5gpm tankless - lpg, liquid - £131.99
Capacity 18l min • 5gpm degrees warm • Water producing rate - Free postage - New and Used
Capacity 18l min • 5gpm degrees warm • Water producing rate - Free postage - New and Used
18l 5gpm tankless lpg - 18l, - £126.90
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
18l 5gpm tankless natural - 5gpm, - £129.90
Water heater • 18l natural gas • Instant boiler demand - Free postage - New and Used
Water heater • 18l natural gas • Instant boiler demand - Free postage - New and Used
18l 5gpm lpg propane gas - gas, hot - £126.90
Hot water heater • You get instant • Are 36kw 18l - Free postage - New and Used
Hot water heater • You get instant • Are 36kw 18l - Free postage - New and Used
18l 5gpm tankless - 5gpm, natural - £126.90
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
130 000 btu 110v - 130,000, propane/lpg - £196.99
This propane tankless • Water heater automatically • Shuts down risks - Free postage - New and Used
This propane tankless • Water heater automatically • Shuts down risks - Free postage - New and Used
Propane gas tankless - gas, - £200.00
Wide application 130 • 000 btu high • Heating capacity maximum - Free postage - New and Used
Wide application 130 • 000 btu high • Heating capacity maximum - Free postage - New and Used
18l 5gpm tankless natural gas - 5gpm, - £129.90
Water heater type • Tankless model 18l • Natural gas heating - Free postage - New and Used
Water heater type • Tankless model 18l • Natural gas heating - Free postage - New and Used
14l 66gpm tankless - 14l, 3.66gpm - £107.63
Efficient energy saving • Advanced combustion technology • Our tankless water - Free postage - New and Used
Efficient energy saving • Advanced combustion technology • Our tankless water - Free postage - New and Used
Suburban water heater sw6del - water, - £479.95
Best water heaters • Road today suburban • Includes high recovery - Free postage - New and Used
Best water heaters • Road today suburban • Includes high recovery - Free postage - New and Used
20l 26gpm tankless propane - 20l, - £136.90
You get instant • Endless hot water • Are 20l tankless - Free postage - New and Used
You get instant • Endless hot water • Are 20l tankless - Free postage - New and Used
18l 5gpm tankless natural gas - tankless, - £126.90
Hot water heater • You get instant • Are type gas - Free postage - New and Used
Hot water heater • You get instant • Are type gas - Free postage - New and Used
10l 12l 18l tankless - 8l, - £142.99
Maximum air consumption • Gas type lpg • 1.52kg water inlet - Free postage - New and Used
Maximum air consumption • Gas type lpg • 1.52kg water inlet - Free postage - New and Used
18l 36kw lpg - propane, gas - £126.90
Hot water heater • You get instant • Are 36kw 16l - Free postage - New and Used
Hot water heater • You get instant • Are 36kw 16l - Free postage - New and Used
Propane tankless water - 8l, - £99.99
Gas type lpg • Propane maximum air • Consumption 1.0kg water - Free postage - New and Used
Gas type lpg • Propane maximum air • Consumption 1.0kg water - Free postage - New and Used
Rheem tankless water - tankless, heater - £829.99
More efficient than • Most traditional tanks • Standard gal gas - Free postage - New and Used
More efficient than • Most traditional tanks • Standard gal gas - Free postage - New and Used
18l 5gpm natural propane - 18l, /propane - £123.90
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
Gas water heater • 18l 5gpm tankless • Demand instant hot - Free postage - New and Used
130 000 btu propane gas - 130,000, - £196.99
Precise steady high • Precision sensors smart • Cpu technology this - Free postage - New and Used
Precise steady high • Precision sensors smart • Cpu technology this - Free postage - New and Used
Lpg gas tankless water - lpg, - £97.99
Capacity min 2gpm • Degrees warm water • Producing rate gas - Free postage - New and Used
Capacity min 2gpm • Degrees warm water • Producing rate gas - Free postage - New and Used
Mizudo tankless water heater - mizudo, - £159.99
Water heater type • Output min 3.6 • Gpm heating systeminstantaneous - Free postage - New and Used
Water heater type • Output min 3.6 • Gpm heating systeminstantaneous - Free postage - New and Used
Vevor gas tankless water - gas, - £379.99
Powerful performance provides • Continuous hot water • Showers washing more - Free postage - New and Used
Powerful performance provides • Continuous hot water • Showers washing more - Free postage - New and Used
18l 5gpm natural gas tankless - 18l, - £129.90
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gasland gasmart gpm - 3.60, - £259.95
3.60 gallons per • Minute gpm hot • Water variable frequency - Free postage - New and Used
3.60 gallons per • Minute gpm hot • Water variable frequency - Free postage - New and Used
Water heater electric - water, - £45.05
Hot water hybrid • Enhanced heating system • Heat kit our - Free postage - New and Used
Hot water hybrid • Enhanced heating system • Heat kit our - Free postage - New and Used
Rheem performance plus - performance, outdoor - £574.95
Trusted rheem quality • Reliability high efficiency • Natural gas operation - Free postage - New and Used
Trusted rheem quality • Reliability high efficiency • Natural gas operation - Free postage - New and Used
Uimoso tankless water - rv, - £212.89
Water heater • Quick connections make • Csa certified has - Free postage - New and Used
Water heater • Quick connections make • Csa certified has - Free postage - New and Used
Navien npn 180u - navien, gas - £600.00
Navien npn 180u • Tankless gas water • Heater versatile energy - Free postage - New and Used
Navien npn 180u • Tankless gas water • Heater versatile energy - Free postage - New and Used
New natural gas - ng, - £219.50
Theh2 choice tankless • Water heater heats • Directly demand manufactured - Free postage - New and Used
Theh2 choice tankless • Water heater heats • Directly demand manufactured - Free postage - New and Used
Gearpass propane tankless - gearpass, - £89.00
Sale outdoor tankless • Water heater made • Gearpass 1.32 gpm - Free postage - New and Used
Sale outdoor tankless • Water heater made • Gearpass 1.32 gpm - Free postage - New and Used
16l 2gpm tankless water - 16l/4.2gpm, - £126.90
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Excel gpm cobremax - 1.6, - £149.00
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
Gas water heater • You arebuying world • Famous vent free - Free postage - New and Used
Portable lpg propane - portable, - £82.99
Gas type lpg • Propane after installing • Water heater doesn - Free postage - New and Used
Gas type lpg • Propane after installing • Water heater doesn - Free postage - New and Used
Tankless instant water - rv, - £205.90
Heat output 42000 • Btu stable temperature • Ranges from 123 - Free postage - New and Used
Heat output 42000 • Btu stable temperature • Ranges from 123 - Free postage - New and Used
Camplux gpm outdoor - 1.32, - £113.99
Camplux 1.32 gpm • Outdoor portable tankless • Water heater camping - Free postage - New and Used
Camplux 1.32 gpm • Outdoor portable tankless • Water heater camping - Free postage - New and Used
18l 5gpm tankless - 5gpm, - £126.90
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
Gas water heater • You get instant • Only suitable one - Free postage - New and Used
12l 6gpm lpg - 12l, lpg/propane - £194.99
Tankless water heater • Safety guard smart • Type gas propane - Free postage - New and Used
Tankless water heater • Safety guard smart • Type gas propane - Free postage - New and Used
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Everything you need to know about gas water heater
Whether you are looking for a brand-new or second-hand gas water heater, eBay offers one of the largest selections available online. With 48 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 £45.05, while premium listings can reach £829.99 — giving you a wide budget spread to work with. The average price of £186.83 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.