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Condensing boiler

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Condensing boiler for sale on largest auction and classifieds sites

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Rinnai ip060s series plus - rinnai,

Rinnai ip060s series plus - rinnai,

$1500.00
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Gpm condensing tankless - gpm,

Gpm condensing tankless - gpm,

$559.99
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Noritz nrc111od 199 - nrc111od, 199,900

Noritz nrc111od 199 - nrc111od, 199,900

$903.49
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Crest lochinvar fbn4000 - crest,

Crest lochinvar fbn4000 - crest,

$6500.00
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Navien nfc 250 200h 199 - 199.9k, btu

Navien nfc 250 200h 199 - 199.9k, btu

$899.99
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Navien condensing gas - navien,

Navien condensing gas - navien,

$799.99
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Buderus gb142 condensate - ,

Buderus gb142 condensate - ,

$65.00
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Triangle tube instinct - instinct, combi

Triangle tube instinct - instinct, combi

$2849.95
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Htp elu 199wcn elite ultra - elu-199wcn,

Htp elu 199wcn elite ultra - elu-199wcn,

$2500.00
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199 000 btu - 199,000, natural

199 000 btu - 199,000, natural

$679.99
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Rinnai 805000025 series - rinnai,

Rinnai 805000025 series - rinnai,

$322.99
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Rinnai 199 000 btu - 199,000, condensing

Rinnai 199 000 btu - 199,000, condensing

$2849.00
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Triangle tube instinct combi - triangle,

Triangle tube instinct combi - triangle,

$3074.95
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Noritz nrc111od 199 900 btu - noritz, 199,900

Noritz nrc111od 199 900 btu - noritz, 199,900

$903.49
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Laars mascot 157 000 btu - laars,

Laars mascot 157 000 btu - laars,

$2773.05
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Crest lochinvar 100311038 - /,

Crest lochinvar 100311038 - /,

$199.99
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Triangle tube instinct solo - triangle,

Triangle tube instinct solo - triangle,

$2715.95
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Navien nfb 200h condensing gas - nfb-200h,

Navien nfb 200h condensing gas - nfb-200h,

$3400.00
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Jjm boiler works 4101 - boiler,

Jjm boiler works 4101 - boiler,

$91.46
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Propane natural gas tankless - propane/natural,

Propane natural gas tankless - propane/natural,

$329.99
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Gallon stainless steel - gallon,

Gallon stainless steel - gallon,

$3957.00
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Rinnai 000 btu condensing - rinnai, 60,000

Rinnai 000 btu condensing - rinnai, 60,000

$1983.06
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Triangle tube instinct solo - triangle,

Triangle tube instinct solo - triangle,

$2260.00
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Rinnai 120 000 btu condensing - 120,000,

Rinnai 120 000 btu condensing - 120,000,

$2271.50
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Jjm boiler nbt p - jjm, nbt-24-p

Jjm boiler nbt p - jjm, nbt-24-p

$94.99
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Htb utfc 199w combi - htb, boiler

Htb utfc 199w combi - htb, boiler

$2400.00
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30026265a flame rod for - 30026265a,

30026265a flame rod for - 30026265a,

$24.81
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Triangle tube ins199s 199 000 - ins199s, 199,000

Triangle tube ins199s 199 000 - ins199s, 199,000

$2813.00
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Thermomate 28gpm condensing - thermomate, 5.28gpm

Thermomate 28gpm condensing - thermomate, 5.28gpm

$503.99
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Rinnai re180en 180 000 btu - rinnai, 180,000

Rinnai re180en 180 000 btu - rinnai, 180,000

$708.49
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Weil mclain 640 000 - weil, 640-000-028

Weil mclain 640 000 - weil, 640-000-028

$303.99
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Rinnai rsc160en 160 - rinnai,

Rinnai rsc160en 160 - rinnai,

$643.49
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Crown boiler - crown, co

Crown boiler - crown, co

$935.00
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Embassy industries onex - embassy,

Embassy industries onex - embassy,

$29.99
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Triangle tube instinct solo - tube,,

Triangle tube instinct solo - tube,,

$2400.00
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Rinnai m090cn residential - rinnai,

Rinnai m090cn residential - rinnai,

$2595.00
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Triangle tube instinct combi - triangle,

Triangle tube instinct combi - triangle,

$2700.00
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Aerco bmk1500 condensing - aerco,

Aerco bmk1500 condensing - aerco,

$20700.00
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Rheem rtg 70xlp - rheem, rtg-70xlp-1

Rheem rtg 70xlp - rheem, rtg-70xlp-1

$599.00
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Pcs condensate neutralizer - 1,

Pcs condensate neutralizer - 1,

$112.33
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X30 stainless steel 33 - steel, (33

X30 stainless steel 33 - steel, (33

$2999.00
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Gallon stainless steel - 39,

Gallon stainless steel - 39,

$3266.00
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High efficiency condensing - high-efficiency,

High efficiency condensing - high-efficiency,

$127.99
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Westinghouse tankless water - tankless,

Westinghouse tankless water - tankless,

$685.26
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New rinnai 804000074 - rinnai,

New rinnai 804000074 - rinnai,

$110.00
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Rheem gpm 200k - 9.5, btu

Rheem gpm 200k - 9.5, btu

$824.99
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Triangle tube pa175 solo - tube,

Triangle tube pa175 solo - tube,

$4500.00
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Rinnai tankless water - rinnai,

Rinnai tankless water - rinnai,

$63.87
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Oem lochinvar condensate trap - condensate,

Oem lochinvar condensate trap - condensate,

$149.00
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Rinnai 000 btu - rinnai, condensing

Rinnai 000 btu - rinnai, condensing

$2581.32
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Bosch 87182261850 rg130 - 87182261850,

Bosch 87182261850 rg130 - 87182261850,

$787.78
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Cs2 condensafe condensate - #cs2,

Cs2 condensafe condensate - #cs2,

$120.77
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Rinnai condensing smart sense - rinnai,

Rinnai condensing smart sense - rinnai,

$799.96
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Viessmann vitodens 200 a - 200-w,

Viessmann vitodens 200 a - 200-w,

$7000.00
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Rinnai e75crp series - 75k, btu

Rinnai e75crp series - 75k, btu

$2295.00
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Aerco benchmark 3000 - benchmark,

Aerco benchmark 3000 - benchmark,

$7199.99
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Rinnai 120 000 btu condensing - 120,000,

Rinnai 120 000 btu condensing - 120,000,

$2733.57
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Condensate neutralizer kit - condensate,

Condensate neutralizer kit - condensate,

$71.99
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Viessmann condensing boiler - condensing,

Viessmann condensing boiler - condensing,

$56.99
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Triangle tube pa250 solo - tube,

Triangle tube pa250 solo - tube,

$5500.00
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Navien condensate siphon part - condensate,

Navien condensate siphon part - condensate,

$20.00
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Viessmann vitodens 200 a - —,

Viessmann vitodens 200 a - —,

$7250.00
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Buderus ssb160 129 - buderus, btu

Buderus ssb160 129 - buderus, btu

$3999.99
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X48 stainless steel 53 - stainless,

X48 stainless steel 53 - stainless,

$4731.00
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Wall mounted modulated - mounted,

Wall mounted modulated - mounted,

$4500.00
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Thermomate gpm condensing - 9.38,

Thermomate gpm condensing - 9.38,

$1099.99
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Gallon stainless steel - gallon,

Gallon stainless steel - gallon,

$2951.00
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Rinnai series condensing - rinnai, i-series

Rinnai series condensing - rinnai, i-series

$2300.00
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Ambiq portuguese copper - al-ambiq,

Ambiq portuguese copper - al-ambiq,

$649.00
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Rinnai e110srp residential - rinnai,

Rinnai e110srp residential - rinnai,

$2399.00
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X36 stainless steel - 18"x36",

X36 stainless steel - 18"x36",

$3437.00
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Rinnai re160ep non condensing - re160ep, non-condensing

Rinnai re160ep non condensing - re160ep, non-condensing

$849.99
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Jjm boiler 3000r condensate - jjm,

Jjm boiler 3000r condensate - jjm,

$99.58
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Patterson kelley mach - patterson-kelley,

Patterson kelley mach - patterson-kelley,

$7150.00
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Gallon stainless steel - 16,

Gallon stainless steel - 16,

$2315.00
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Gallon stainless steel - 94,

Gallon stainless steel - 94,

$5962.00
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Rinnai 805000025 gas - rinnai,

Rinnai 805000025 gas - rinnai,

$775.00
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Rinnai condensing horizontal - rinnai,

Rinnai condensing horizontal - rinnai,

$78.99
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Semiatek condens - condens, (h-hu)

Semiatek condens - condens, (h-hu)

$790.00
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Uimoso hp condensate - 1/12,

Uimoso hp condensate - 1/12,

$46.99
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Gallon stainless steel - 26,

Gallon stainless steel - 26,

$2465.00
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Rheem rtg 70xlp - rheem, outdoor

Rheem rtg 70xlp - rheem, outdoor

$500.00
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Gallon stainless steel - 53,

Gallon stainless steel - 53,

$4731.00
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Jjm boiler works 300r - boiler,

Jjm boiler works 300r - boiler,

$54.70
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Neutrasafe cn4 850 clear - neutrasafe, tube

Neutrasafe cn4 850 clear - neutrasafe, tube

$105.99
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Aquastrong 115v 70gph hvac - aquastrong,

Aquastrong 115v 70gph hvac - aquastrong,

$38.99
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Cu199ep 199 000 btu - 199,000,

Cu199ep 199 000 btu - 199,000,

$2195.00
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Navien fan nhb 005 - navien,

Navien fan nhb 005 - navien,

$185.99
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Jjm 7101 nbt - nbt-400p, tank

Jjm 7101 nbt - nbt-400p, tank

$165.62
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Ebm papst ephs - ephs, 850mn

Ebm papst ephs - ephs, 850mn

$299.95
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Rinnai 000 btu - 60,000,

Rinnai 000 btu - 60,000,

$2522.56
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Rinnai 804000074 condensate - 804000074,

Rinnai 804000074 condensate - 804000074,

$102.59
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Gallon stainless steel - 40,

Gallon stainless steel - 40,

$3437.00
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Lattner boiler vertical - boiler,

Lattner boiler vertical - boiler,

$3599.99
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Lochinvar 100163186 msc2975 - lochinvar,

Lochinvar 100163186 msc2975 - lochinvar,

$205.64
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Vesta inc vrc - vesta.ds, inc.

Vesta inc vrc - vesta.ds, inc.

$1850.00
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📊96 listings · from $20 · avg $2059.3

Browse 96 condensing boiler listings currently in our index. Prices range from $20 to $20700, with an average of $2059.3. 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 condensing boiler →

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Everything you need to know about condensing boiler

Whether you are looking for a brand-new or second-hand condensing 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 $20, while premium listings can reach $20700 — giving you a wide budget spread to work with. The average price of $2059.3 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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