Natural gas water heater
Natural gas water heater for sale on Ireland's largest auction and classifieds sites
18l 5gpm natural - 18l, gas - £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
Natural gas tankless water - tankless, - £357.99
16l min 5.1gpm • Huge supply hot • Water stable temperature - Free postage - New and Used
16l min 5.1gpm • Huge supply hot • Water stable temperature - Free postage - New and Used
Propane natural gas tankless - propane/natural, - £399.99
Choose your model • Cz264 3.06 gpm • 75k btu ideal - Free postage - New and Used
Choose your model • Cz264 3.06 gpm • 75k btu ideal - Free postage - New and Used
18l 5gpm tankless natural - tankless, - £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
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Rinnai re199in indoor natural - rinnai, - £801.72
Need this water • Heater installed high • Efficiency non condensing - Free postage - New and Used
Need this water • Heater installed high • Efficiency non condensing - Free postage - New and Used
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48 listings · from £93.07 · avg £457.67
Browse 48 natural gas water heater listings currently in our index. Prices range from £93.07 to £1281.99, with an average of £457.67. 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 natural gas water heater →
Vevor 10l 5gpm - 5gpm, tankless - £93.07
Why choose vevor • 10l lpg hot • This water heater - Free postage - New and Used
Why choose vevor • 10l lpg hot • This water heater - Free postage - New and Used
Rinnai super high efficiency - rinnai, - £999.00
Water heater • Rinnai super high • Efficiency gpm 160 - Free postage - New and Used
Water heater • Rinnai super high • Efficiency gpm 160 - Free postage - New and Used
Tankless water heater natural - heater, - £288.99
Csa certified overheat • Flameout protection safety • Endless hot water - Free postage - New and Used
Csa certified overheat • Flameout protection safety • Endless hot water - Free postage - New and Used
Read rheem gal 76 000 - gal., 76,000 - £899.99
Rheem performance gal • Piezo ignition system • Ensures safe easy - Free postage - New and Used
Rheem performance gal • Piezo ignition system • Ensures safe easy - 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
Rheem rtg 84dvln - rheem, rtg-84dvln-3 - £499.99
Type tankless water • Heater boiler manufacturer • Rheem power source - Free postage - New and Used
Type tankless water • Heater boiler manufacturer • Rheem power source - Free postage - New and Used
Rheem tankless water heater - tankless, - £699.99
Rheem eco200xeln performance • Plus high efficiency • Outdoor natural gas - Free postage - New and Used
Rheem eco200xeln performance • Plus high efficiency • Outdoor natural gas - Free postage - New and Used
Forimo tankless natural gas - natural, - £160.99
Water heater • Natural gas instant • Indoor 3.18 gpm - Free postage - New and Used
Water heater • Natural gas instant • Indoor 3.18 gpm - Free postage - New and Used
Mizudo natural gas tankless - mizudo, - £198.99
Tankless water heater • Capacity 3.6 gpm • Connection sizes cold - Free postage - New and Used
Tankless water heater • Capacity 3.6 gpm • Connection sizes cold - Free postage - New and Used
120k btu natural gas tankless - 120k, - £329.99
Tankless water heater • Durable safe outdoor • Built withstand harsh - Free postage - New and Used
Tankless water heater • Durable safe outdoor • Built withstand harsh - Free postage - New and Used
Fogatti 170 000 btu natural - btu, - £569.99
Instant heating this • Tankless water heater • Natural gas different - Free postage - New and Used
Instant heating this • Tankless water heater • Natural gas different - Free postage - New and Used
199 000 btu - btu, natural - £679.99
Tankless water heater • 199 000 btu • Indoor natural gas - Free postage - New and Used
Tankless water heater • 199 000 btu • Indoor natural gas - Free postage - New and Used
Instant hot water - hot, - £270.99
Hot water • Heaters can provide • Points comfortable bathing - Free postage - New and Used
Hot water • Heaters can provide • Points comfortable bathing - Free postage - New and Used
18l 5gpm tankless natural - 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
Rinnai rucs65in tankless water - rucs65in, - £699.99
- Free postage - New and Used
- Free postage - New and Used
12l tankless natural - tankless, - £104.54
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
Rinnai v53den outdoor - outdoor, tankless - £599.99
These are scratch • Units have manufacturer • Dent - Free postage - New and Used
These are scratch • Units have manufacturer • Dent - 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
Rinnai rxp160in gpm 160k - rinnai, - £1200.00
Model rxp160in 160 • 000 btu high • Efficiency output to9 - Free postage - New and Used
Model rxp160in 160 • 000 btu high • Efficiency output to9 - Free postage - New and Used
Rinnai rxp199in condensing - rinnai, - £1281.99
- Free postage - New and Used
- Free postage - New and Used
18l 5gpm tankless - tankless, 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
180 000btu outdoor tankless - 180,000btu, - £437.99
Water heater type • Tankless say goodbye • Preheating delays whether - Free postage - New and Used
Water heater type • Tankless say goodbye • Preheating delays whether - Free postage - New and Used
18l tankless natural gas hot - tankless, - £129.90
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
Mizudo natural gas - mizudo, - £199.99
Mizudo natural gas • Tankless water heater • 3.6 gpm 000 - Free postage - New and Used
Mizudo natural gas • Tankless water heater • 3.6 gpm 000 - Free postage - New and Used
Thermomate 28gpm condensing - thermomate, - £559.99
Dual heat exchanger • Stainless steel oxygen • Free copper captures - Free postage - New and Used
Dual heat exchanger • Stainless steel oxygen • Free copper captures - Free postage - New and Used
Natural gas tankless water - gas, - £349.99
Velpax propane tankless • Water heater high • Efficient 18l indoor - Free postage - New and Used
Velpax propane tankless • Water heater high • Efficient 18l indoor - Free postage - New and Used
18l 5gpm tankless - natural, gas - £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
Rinnai re199en outdoor - rinnai, - £1100.00
Rinnai re199en outdoor • Tankless water heater • High powered 199 - Free postage - New and Used
Rinnai re199en outdoor • Tankless water heater • High powered 199 - Free postage - New and Used
18l 5gpm tankless lpg liquid - 18l, - £136.99
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
Tankless water heater - tankless, - £373.00
Product dimensions 17.1 • 7.3 26.2 maximum • Flow rate 3.6 - Free postage - New and Used
Product dimensions 17.1 • 7.3 26.2 maximum • Flow rate 3.6 - Free postage - New and Used
Rinnai v75in indoor tankless - rinnai, - £649.99
V75in perfect combination • High efficiency comfort • Value natural gas - Free postage - New and Used
V75in perfect combination • High efficiency comfort • Value natural gas - Free postage - New and Used
24l gpm tankless natural - 24l, 7.5 - £456.99
Adopts more advanced • Technology that safer • Longer lasting tankless - Free postage - New and Used
Adopts more advanced • Technology that safer • Longer lasting tankless - Free postage - New and Used
Rheem tankless water heater - water, - £899.99
More efficient than • Most traditional tanks • Standard gallon gas - Free postage - New and Used
More efficient than • Most traditional tanks • Standard gallon gas - Free postage - New and Used
Rheem natural gas - gas, indoor - £799.95
Endless hot water • Smart efficiency one • Powerhouse unit grabs - Free postage - New and Used
Endless hot water • Smart efficiency one • Powerhouse unit grabs - Free postage - New and Used
Gasland gasmart gpm - gasland, 3.60 - £249.95
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
Sihao 12l 5gpm hot - sihao, water - £114.99
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
Smith 50 gal direct - smith®, - £1150.00
Ships fast via • Freight company from • Dallas business days - Free postage - New and Used
Ships fast via • Freight company from • Dallas business days - Free postage - New and Used
Natural gas tankless hot water - gas, - £212.99
4.3 gpm 100 • New natural gas • Tankless hot water - Free postage - New and Used
4.3 gpm 100 • New natural gas • Tankless hot water - Free postage - New and Used
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
V65en 150 000 - v65en, btu - £699.00
Btu input 300 • 150 000 energy • Factor natural gas - Free postage - New and Used
Btu input 300 • 150 000 energy • Factor natural gas - Free postage - New and Used
Used outdoor tankless water - used-, - £469.00
Tankless water heater • Heating capacity 6.87 • Gpm easy installation - Free postage - New and Used
Tankless water heater • Heating capacity 6.87 • Gpm easy installation - Free postage - New and Used
Tankless water heater - tankless, - £199.99
Applicable exclusively natural • Gas lng widely • Application compared tank - Free postage - New and Used
Applicable exclusively natural • Gas lng widely • Application compared tank - Free postage - New and Used
Rinnai re140in indoor tankless - re140in, - £599.99
Re140in perfect combination • High efficiency comfort • Value natural gas - Free postage - New and Used
Re140in perfect combination • High efficiency comfort • Value natural gas - Free postage - New and Used
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Everything you need to know about natural gas water heater
Whether you are looking for a brand-new or second-hand natural 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 £93.07, while premium listings can reach £1281.99 — giving you a wide budget spread to work with. The average price of £457.67 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.