For Sale USA

Tankless gas water heater

4

Tankless gas water heater for sale on largest auction and classifieds sites

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

Propane natural gas tankless - gas,

$399.99
Buy It Now

» View on eBay #sponsored
Gasland cs422bng tankless - gasland,

Gasland cs422bng tankless - gasland,

$259.99
Buy It Now

» View on eBay #sponsored
Rheem tankless water heater - rheem,

Rheem tankless water heater - rheem,

$619.99
Buy It Now

» View on eBay #sponsored
Rheem plus tankless - rheem,

Rheem plus tankless - rheem,

$449.00
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless - 18l,

18l 5gpm tankless - 18l,

$116.00
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless lpg - 5gpm, liquid

18l 5gpm tankless lpg - 5gpm, liquid

$120.90
Buy It Now

» View on eBay #sponsored
10l 12l 18l tankless - 8l,

10l 12l 18l tankless - 8l,

$122.99
Buy It Now

» View on eBay #sponsored
Vevor gas tankless water - tankless,

Vevor gas tankless water - tankless,

$152.91
Buy It Now

» View on eBay #sponsored
Rinnai re199in indoor - rinnai,

Rinnai re199in indoor - rinnai,

$657.04
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless - 18l,

18l 5gpm tankless - 18l,

$116.90
Buy It Now

» View on eBay #sponsored
Vevor tankless water - rv, heater

Vevor tankless water - rv, heater

$193.76
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless - 5gpm, lpg

18l 5gpm tankless - 5gpm, lpg

$119.89
Buy It Now

» View on eBay #sponsored
18l lpg propane gas - propane, water

18l lpg propane gas - propane, water

$120.90
Buy It Now

» View on eBay #sponsored
Marey ga5port tankless hot - tankless,

Marey ga5port tankless hot - tankless,

$115.00
Buy It Now

» View on eBay #sponsored
Camplux 16l tankless gas water - 16l,

Camplux 16l tankless gas water - 16l,

$339.99
Buy It Now

» View on eBay #sponsored
Natural gas ez202 portable - natural,

Natural gas ez202 portable - natural,

$324.95
Buy It Now

» View on eBay #sponsored
Vevor propane tankless water - propane,

Vevor propane tankless water - propane,

$169.90
Buy It Now

» View on eBay #sponsored
18l 36kw lpg - 36kw,

18l 36kw lpg - 36kw,

$120.90
Buy It Now

» View on eBay #sponsored
Rheem tankless water - rheem,

Rheem tankless water - rheem,

$749.99
Buy It Now

» View on eBay #sponsored
20l 26gpm tankless propane - 5.26gpm,

20l 26gpm tankless propane - 5.26gpm,

$131.50
Buy It Now

» View on eBay #sponsored
Lpg propane gas - gas, water

Lpg propane gas - gas, water

$77.99
Buy It Now

» View on eBay #sponsored
20l lpg propane gas - gas, hot

20l lpg propane gas - gas, hot

$120.90
Buy It Now

» View on eBay #sponsored
Portable lpg propane gas hot - propane,

Portable lpg propane gas hot - propane,

$103.09
Buy It Now

» View on eBay #sponsored
Rheem indoor natural gas - indoor,

Rheem indoor natural gas - indoor,

$749.99
Buy It Now

» View on eBay #sponsored
Propane tankless water - 8l,

Propane tankless water - 8l,

$94.99
Buy It Now

» View on eBay #sponsored
Vevor tankless water - vevor,

Vevor tankless water - vevor,

$259.90
Buy It Now

» View on eBay #sponsored
18l 5gpm natural propane - 18l, /propane

18l 5gpm natural propane - 18l, /propane

$119.90
Buy It Now

» View on eBay #sponsored
Rheem tankless water heater - rheem,

Rheem tankless water heater - rheem,

$650.00
Buy It Now

» View on eBay #sponsored
Aquastar tankless gas - tankless, water

Aquastar tankless gas - tankless, water

$325.00
Buy It Now

» View on eBay #sponsored
130 000 btu propane gas - 130,000,

130 000 btu propane gas - 130,000,

$172.86
Buy It Now

» View on eBay #sponsored
130 000 btu propane gas - btu,

130 000 btu propane gas - btu,

$172.86
Buy It Now

» View on eBay #sponsored
20l tankless lpg - tankless, liquid

20l tankless lpg - tankless, liquid

$139.90
Buy It Now

» View on eBay #sponsored
Lpg gas tankless - 8l, water

Lpg gas tankless - 8l, water

$92.99
Buy It Now

» View on eBay #sponsored
New inbox tankless water - inbox,

New inbox tankless water - inbox,

$25.00
Buy It Now

» View on eBay #sponsored
Rinnai re180ep outdoor - re180ep,

Rinnai re180ep outdoor - re180ep,

$775.00
Buy It Now

» View on eBay #sponsored
24l gpm tankless water - 24l,

24l gpm tankless water - 24l,

$399.99
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless natural - 18l,

18l 5gpm tankless natural - 18l,

$119.90
Buy It Now

» View on eBay #sponsored
Rudd gpm tankless natural - 9.5,

Rudd gpm tankless natural - 9.5,

$550.95
Buy It Now

» View on eBay #sponsored
Camplux natural gas tankless - camplux,

Camplux natural gas tankless - camplux,

$319.99
Buy It Now

» View on eBay #sponsored
130 000 btu - propane, gas

130 000 btu - propane, gas

$167.57
Buy It Now

» View on eBay #sponsored
130 000 btu propane - propane, gas

130 000 btu propane - propane, gas

$172.86
Buy It Now

» View on eBay #sponsored
100 000 btu tankless water - 100,000,

100 000 btu tankless water - 100,000,

$189.99
Buy It Now

» View on eBay #sponsored
Excel gpm cobremax - 1.6,

Excel gpm cobremax - 1.6,

$149.00
Buy It Now

» View on eBay #sponsored
14l natural gas tankless hot - 14l,

14l natural gas tankless hot - 14l,

$142.59
Buy It Now

» View on eBay #sponsored
Propane natural gas - propane/natural, tankless

Propane natural gas - propane/natural, tankless

$159.99
Buy It Now

» View on eBay #sponsored
18l propane natural gas - 18l, propane/natural

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

$118.90
Buy It Now

» View on eBay #sponsored
180 000btu tankless - tankless, water

180 000btu tankless - tankless, water

$484.49
Buy It Now

» View on eBay #sponsored
18l 36kw lng natural - 36kw,

18l 36kw lng natural - 36kw,

$119.90
Buy It Now

» View on eBay #sponsored
Rinnai sensei super - rinnai,

Rinnai sensei super - rinnai,

$1174.98
Buy It Now

» View on eBay #sponsored
Tankless water heater - tankless,

Tankless water heater - tankless,

$212.97
Buy It Now

» View on eBay #sponsored
Vevor tankless water heater - rv,

Vevor tankless water heater - rv,

$249.90
Buy It Now

» View on eBay #sponsored
18l 5gpm tankless natural gas - 5gpm,

18l 5gpm tankless natural gas - 5gpm,

$119.90
Buy It Now

» View on eBay #sponsored
Rinnai rucs75in gpm 160k - 7.5,

Rinnai rucs75in gpm 160k - 7.5,

$899.00
Buy It Now

» View on eBay #sponsored
20l 26gpm lpg propane - lpg, gas

20l 26gpm lpg propane - lpg, gas

$130.90
Buy It Now

» View on eBay #sponsored
Takagi tankless gas water - tankless,

Takagi tankless gas water - tankless,

$539.99
Buy It Now

» View on eBay #sponsored
Apus natural gas - apus,

Apus natural gas - apus,

$250.00
Buy It Now

» View on eBay #sponsored
Rinnai re140ip indoor tankless - rinnai,

Rinnai re140ip indoor tankless - rinnai,

$599.99
Buy It Now

» View on eBay #sponsored
Portable lpg propane gas - lpg, hot

Portable lpg propane gas - lpg, hot

$76.99
Buy It Now

» View on eBay #sponsored
Gasland gasmart propane - gasland,

Gasland gasmart propane - gasland,

$349.99
Buy It Now

» View on eBay #sponsored
Rinnai tankless water - rinnai,

Rinnai tankless water - rinnai,

$899.98
Buy It Now

» View on eBay #sponsored
Fogatti 170 000 - fogatti, 170,000

Fogatti 170 000 - fogatti, 170,000

$569.99
Buy It Now

» View on eBay #sponsored
10l 12l 18l - 6l,

10l 12l 18l - 6l,

$108.99
Buy It Now

» View on eBay #sponsored
Fogatti tankless water - fogatti,

Fogatti tankless water - fogatti,

$399.00
Buy It Now

» View on eBay #sponsored
18l 5gpm lpg - lpg, propane

18l 5gpm lpg - lpg, propane

$120.90
Buy It Now

» View on eBay #sponsored
Takagi 510u 200 tankless - takagi,

Takagi 510u 200 tankless - takagi,

$749.99
Buy It Now

» View on eBay #sponsored
Vevor propane tankless water - propane,

Vevor propane tankless water - propane,

$311.62
Buy It Now

» View on eBay #sponsored
Tankless water heater - water,

Tankless water heater - water,

$272.99
Buy It Now

» View on eBay #sponsored
170k btu indoor tankless water - btu,

170k btu indoor tankless water - btu,

$379.99
Buy It Now

» View on eBay #sponsored
12l 14l 16l propane natural - 12l/14l/16l, propane/natural

12l 14l 16l propane natural - 12l/14l/16l, propane/natural

$144.48
Buy It Now

» View on eBay #sponsored
Tankless water heater propane - water,

Tankless water heater propane - water,

$119.69
Buy It Now

» View on eBay #sponsored
Gpm 000 btu tankless - 80,000,

Gpm 000 btu tankless - 80,000,

$189.00
Buy It Now

» View on eBay #sponsored
Camplux gpm residential - camplux, 4.22

Camplux gpm residential - camplux, 4.22

$195.00
Buy It Now

» View on eBay #sponsored
Gpm condensing tankless - 5.28,

Gpm condensing tankless - 5.28,

$503.99
Buy It Now

» View on eBay #sponsored
New rv tankless water - 【90%,

New rv tankless water - 【90%,

$179.10
Buy It Now

» View on eBay #sponsored
Portable lpg propane gas - portable,

Portable lpg propane gas - portable,

$103.09
Buy It Now

» View on eBay #sponsored
Camplux tankless water heater - tankless,

Camplux tankless water heater - tankless,

$143.99
Buy It Now

» View on eBay #sponsored
Rinnai rx130in super - rinnai,

Rinnai rx130in super - rinnai,

$1082.70
Buy It Now

» View on eBay #sponsored
Rheem gpm 200k btu smart - 9.5,

Rheem gpm 200k btu smart - 9.5,

$824.99
Buy It Now

» View on eBay #sponsored
Indoor tankless water - indoor,

Indoor tankless water - indoor,

$238.99
Buy It Now

» View on eBay #sponsored
20l tankless propane gas hot - 20l,

20l tankless propane gas hot - 20l,

$131.90
Buy It Now

» View on eBay #sponsored
18l natural gas tankless hot - 18l,

18l natural gas tankless hot - 18l,

$119.90
Buy It Now

» View on eBay #sponsored
Portable tankless water heater - tankless,

Portable tankless water heater - tankless,

$269.99
Buy It Now

» View on eBay #sponsored
Gas water heater camping - heater,

Gas water heater camping - heater,

$97.99
Buy It Now

» View on eBay #sponsored
60000 btu tankless - btu, rv

60000 btu tankless - btu, rv

$239.99
Buy It Now

» View on eBay #sponsored
20l propane gas tankless - propane,

20l propane gas tankless - propane,

$131.90
Buy It Now

» View on eBay #sponsored
120k btu natural gas - btu,

120k btu natural gas - btu,

$357.19
Buy It Now

» View on eBay #sponsored
Portable lpg propane gas hot - propane,

Portable lpg propane gas hot - propane,

$97.99
Buy It Now

» View on eBay #sponsored
Rheem tankless water - water, heater

Rheem tankless water - water, heater

$899.99
Buy It Now

» View on eBay #sponsored
Mizudo natural gas tankless - gas,

Mizudo natural gas tankless - gas,

$175.99
Buy It Now

» View on eBay #sponsored
Camplux tankless gas hot - camplux, 5l

Camplux tankless gas hot - camplux, 5l

$229.99
Buy It Now

» View on eBay #sponsored
Noritz tankless water heater - noritz,

Noritz tankless water heater - noritz,

$849.99
Buy It Now

» View on eBay #sponsored
Natural gas tankless water - tankless,

Natural gas tankless water - tankless,

$349.99
Buy It Now

» View on eBay #sponsored
Rinnai rxp199in tankless - tankless, water

Rinnai rxp199in tankless - tankless, water

$1099.99
Buy It Now

» View on eBay #sponsored
Tankless water heater - heater, whole

Tankless water heater - heater, whole

$499.99
Buy It Now

» View on eBay #sponsored
Fogatti tankless water - fogatti,

Fogatti tankless water - fogatti,

$349.99
Buy It Now

» View on eBay #sponsored
Eccotemp i12 indoor gpm - i12,

Eccotemp i12 indoor gpm - i12,

$419.00
Buy It Now

» View on eBay #sponsored

Looking for more tankless gas water heater?

Search eBay live — fresh results filtered for the best value, updated every hour.

🔍 Search live deals
📊96 listings · from $25 · avg $321.29
⚠️ These listings were last updated more than 9 days ago. Search for fresh listings

Browse 96 tankless gas water heater listings currently in our index. Prices range from $25 to $1174.98, with an average of $321.29. 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 tankless gas water heater →

Try this: water heater | 5 gallon water | 5 gallon water jug | 55 gallon water barrel | bucket heater | kenmore water softener | culligan water softener | rv propane heater | 75 gal gas water heater | 5 gallon water dispenser

Shop by budget

< $25 $25 – $50 $50 – $100 $100 – $200 $200 – $500 > $500

Everything you need to know about tankless gas water heater

Whether you are looking for a brand-new or second-hand tankless gas 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 $25, while premium listings can reach $1174.98 — giving you a wide budget spread to work with. The average price of $321.29 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.

🔍 tankless gas water heater Search live on eBay