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Natural gas tankless water heater

4

Natural gas tankless water heater for sale on largest auction and classifieds sites

Home / Water Heating & Filtration / Natural gas tankless water heater refurbished & used for sale | For Sale USA
Propane natural gas - propane/natural,

Propane natural gas - propane/natural,

$329.99
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Eccotemp i12 indoor - eccotemp, gpm

Eccotemp i12 indoor - eccotemp, gpm

$419.00
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Rinnai re160in indoor - re160in,

Rinnai re160in indoor - re160in,

$500.00
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Natural gas ez202 - -, portable

Natural gas ez202 - -, portable

$324.95
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199 000 btu tankless - 199,000,

199 000 btu tankless - 199,000,

$679.99
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Rheem indoor natural gas - indoor,

Rheem indoor natural gas - indoor,

$749.99
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Rheem indoor natural gas - rheem,

Rheem indoor natural gas - rheem,

$599.99
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Rinnai re199in indoor - rinnai,

Rinnai re199in indoor - rinnai,

$755.86
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Rheem tankless water - rheem,

Rheem tankless water - rheem,

$749.99
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18l 5gpm tankless natural gas - 5gpm,

18l 5gpm tankless natural gas - 5gpm,

$117.90
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Smith series 6gpm 16kbtu - smith, 6.6gpm

Smith series 6gpm 16kbtu - smith, 6.6gpm

$699.00
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Rheem tankless water heater - rheem,

Rheem tankless water heater - rheem,

$899.99
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Camplux climatech indoor - climatech,

Camplux climatech indoor - climatech,

$179.99
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100 000 btu tankless - 100,000,

100 000 btu tankless - 100,000,

$189.99
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Vevor gas tankless - vevor,

Vevor gas tankless - vevor,

$161.41
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Natural gas tankless water - natural,

Natural gas tankless water - natural,

$329.99
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18l propane natural - propane/natural, gas

18l propane natural - propane/natural, gas

$119.90
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Rudd gpm tankless - rudd, natural

Rudd gpm tankless - rudd, natural

$550.95
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Takagi model 510u 1 - takagi,

Takagi model 510u 1 - takagi,

$601.99
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Natural gas tankless water - natural,

Natural gas tankless water - natural,

$349.99
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Rheem performance plus - 7.0, gpm

Rheem performance plus - 7.0, gpm

$489.99
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Smith signature series - signature,

Smith signature series - signature,

$1000.00
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10l 12l 18l tankless - 18l,

10l 12l 18l tankless - 18l,

$122.99
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Tankless water heater - tankless,

Tankless water heater - tankless,

$169.99
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120k btu natural gas tankless - btu,

120k btu natural gas tankless - btu,

$357.19
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Rheem gpm 200k btu smart - rheem, 9.5

Rheem gpm 200k btu smart - rheem, 9.5

$824.99
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Lpg gas tankless water - 8l,

Lpg gas tankless water - 8l,

$92.99
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Tankless water heater whole - tankless,

Tankless water heater whole - tankless,

$503.99
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Natural gas tankless - natural, water

Natural gas tankless - natural, water

$299.99
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Natural gas tankless water - natural,

Natural gas tankless water - natural,

$349.99
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Mizudo natural gas tankless - mizudo,

Mizudo natural gas tankless - mizudo,

$500.00
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New natural gas - natural,

New natural gas - natural,

$219.50
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170k btu indoor tankless - indoor, water

170k btu indoor tankless - indoor, water

$379.99
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20l lpg propane gas hot - 16/18/20l,

20l lpg propane gas hot - 16/18/20l,

$120.90
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18l 5gpm tankless lpg liquid - 5gpm,

18l 5gpm tankless lpg liquid - 5gpm,

$119.89
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Takagi 510u 200 tankless - tk-510u-i,

Takagi 510u 200 tankless - tk-510u-i,

$749.99
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Bosch aquastar 125b - aquastar,

Bosch aquastar 125b - aquastar,

$400.00
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18l 5gpm natural propane gas - 5gpm,

18l 5gpm natural propane gas - 5gpm,

$120.90
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Brand new natural gas - brand, tankless

Brand new natural gas - brand, tankless

$219.50
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Condensing tankless water - tankless,

Condensing tankless water - tankless,

$559.99
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Natural gas tankless water - gas,

Natural gas tankless water - gas,

$599.99
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Rinnai rxp199in tankless - rinnai,

Rinnai rxp199in tankless - rinnai,

$1219.33
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Natural gas propane tankless - natural, gas/propane

Natural gas propane tankless - natural, gas/propane

$399.99
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Excel gpm cobremax - excel,

Excel gpm cobremax - excel,

$139.00
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Rinnai re199en outdoor - re199en,

Rinnai re199en outdoor - re199en,

$799.99
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Propane natural gas tankless - gas,

Propane natural gas tankless - gas,

$169.99
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18l lng natural gas hot - lng, water

18l lng natural gas hot - lng, water

$119.09
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Rinnai re140in indoor tankless - re140in,

Rinnai re140in indoor tankless - re140in,

$599.99
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18l 5gpm tankless natural - 5gpm,

18l 5gpm tankless natural - 5gpm,

$120.90
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Rinnai rxp199in tankless water - rinnai,

Rinnai rxp199in tankless water - rinnai,

$1099.99
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Rinnai rx180in tankless water - rx180in,

Rinnai rx180in tankless water - rx180in,

$849.99
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24l gpm tankless water - 24l,

24l gpm tankless water - 24l,

$399.99
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Refurbished natural gas - 【refurbished】natural,

Refurbished natural gas - 【refurbished】natural,

$769.99
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Fogatti 120 000 btu - fogatti, tankless

Fogatti 120 000 btu - fogatti, tankless

$459.99
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Natural gas tankless water - natural,

Natural gas tankless water - natural,

$265.87
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Apus indoor tankless water - apus,

Apus indoor tankless water - apus,

$265.00
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Rheem eco200xeln tankless - eco200xeln-3,

Rheem eco200xeln tankless - eco200xeln-3,

$990.00
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20l 26gpm lpg propane gas - 20l,

20l 26gpm lpg propane gas - 20l,

$130.90
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Rheem gpm smart outdoor - gpm,

Rheem gpm smart outdoor - gpm,

$759.99
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20l 26gpm tankless - tankless, propane

20l 26gpm tankless - tankless, propane

$131.90
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See notes rinnai - see, re160in

See notes rinnai - see, re160in

$607.45
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Rinnai re140ip indoor tankless - rinnai,

Rinnai re140ip indoor tankless - rinnai,

$599.99
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Tankless water heater natural - heater,

Tankless water heater natural - heater,

$639.99
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Rinnai rx199in indoor - rx199in, indoor/outdoor

Rinnai rx199in indoor - rx199in, indoor/outdoor

$949.99
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Tankless water heater natural - tankless,

Tankless water heater natural - tankless,

$689.99
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Thermomate 28gpm condensing - thermomate, 5.28gpm

Thermomate 28gpm condensing - thermomate, 5.28gpm

$548.79
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Ranein rh19k tankless - rh19k,

Ranein rh19k tankless - rh19k,

$150.00
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Kings peak indoor tankless - kings,

Kings peak indoor tankless - kings,

$619.99
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18l 36kw lng natural gas - natural,

18l 36kw lng natural gas - natural,

$120.90
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Rheem smart outdoor - rheem,

Rheem smart outdoor - rheem,

$739.95
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Rheem indoor natural gas - indoor,

Rheem indoor natural gas - indoor,

$550.00
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10l 12l 18l tankless - 10l,

10l 12l 18l tankless - 10l,

$123.99
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Uimoso indoor natural gas - natural,

Uimoso indoor natural gas - natural,

$143.99
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Rinnai re199in natural gas - rinnai,

Rinnai re199in natural gas - rinnai,

$999.99
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Camplux gpm 102 000 btu - 4.22, 102,000

Camplux gpm 102 000 btu - 4.22, 102,000

$249.16
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Tankless water heater - tankless, natural

Tankless water heater - tankless, natural

$344.99
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Prime indoor natural gas - indoor,

Prime indoor natural gas - indoor,

$239.95
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Rheem performance plus gpm - plus,

Rheem performance plus gpm - plus,

$599.00
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Rheem eco200xeln tankless - rheem,

Rheem eco200xeln tankless - rheem,

$689.00
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Rheem tankless water - rheem,

Rheem tankless water - rheem,

$599.99
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Propane natural gas tankless - gas,

Propane natural gas tankless - gas,

$169.99
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Rinnai re199en outdoor - re199en,

Rinnai re199en outdoor - re199en,

$799.99
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Rinnai v75in high efficiency - v75in,

Rinnai v75in high efficiency - v75in,

$1006.09
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Climatech 22 gpm - climatech-7,4.22,

Climatech 22 gpm - climatech-7,4.22,

$199.00
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Prime indoor natural - prime, gas

Prime indoor natural - prime, gas

$279.95
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Smith tankless natural gas - ao,

Smith tankless natural gas - ao,

$700.00
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Prime indoor natural gas - prime,

Prime indoor natural gas - prime,

$239.95
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Natural gas tankless water - tankless,

Natural gas tankless water - tankless,

$399.99
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Propane natural gas tankless - gas,

Propane natural gas tankless - gas,

$159.99
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Natural gas tankless water - natural,

Natural gas tankless water - natural,

$250.60
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Instant hot natural gas - instant,

Instant hot natural gas - instant,

$227.99
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18l 5gpm tankless - tankless, gas

18l 5gpm tankless - tankless, gas

$119.90
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Vevor gas tankless water - vevor,

Vevor gas tankless water - vevor,

$124.99
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3gpm 145k btu - 6.3gpm,

3gpm 145k btu - 6.3gpm,

$413.99
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Mizudo natural gas tankless - mizudo,

Mizudo natural gas tankless - mizudo,

$242.24
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Camplux natural gas tankless - natural,

Camplux natural gas tankless - natural,

$319.99
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📊96 listings · from $92.99 · avg $448.62
⚠️ These listings were last updated more than 15 days ago. Search for fresh listings

Browse 96 natural gas tankless water heater listings currently in our index. Prices range from $92.99 to $1219.33, with an average of $448.62. 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 tankless water heater →

Try this: natural gas boiler | power vent water heater | rainsoft | rheem tankless water heater | tankless water heater | water heater tank | water softener | water cooler dispenser | wine dispenser | culligan

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Everything you need to know about natural gas tankless water heater

Whether you are looking for a brand-new or second-hand natural gas tankless water heater, 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 $92.99, while premium listings can reach $1219.33 — giving you a wide budget spread to work with. The average price of $448.62 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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