Tankless Water Heaters
tankless water heaters — pre-owned
Browse 1,439 tankless water heaters — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
Reconditioned Titan N-160 water heater. Stainless Steel cover.
Reconditioned Titan N-160 tankless water heater. 10 Years against leak.
Stiebel Eltron Tempra 29 B Electric Tankless Water Heater 208/240V
Stiebel Eltron Tempra 29 B Electric Tankless Water Heater 208/240V
Rinnai R85i-1 (Model REU-V2532FFU-US
The Rinnai R85i-1 (Model REU-V2532FFU-US) is a compact tankless water heater that operates on gas with a power source of 120V. With an instantaneous heating system, it provides hot water on demand without the need for a storage tank.
NORITZ RC-7649
Noritz thermost/ Noritz control RC7649 M
100,000 BTU Tankless Water Heater Natural Gas 4.3GPM Instant Hot Water Certified
MIZUDO Natural Gas Tankless Water Heater, Up to 4.3 GPM, 100,000 BTU, CSA Certified. Water Heater Type : Tankless. Heating SystemInstantaneous (Tankless). Water Inlet : 3/4" NPT. When families asked 'Can we drink our water as safely as we bathe?'.
1440W 2.5 Gallon Mini Tank Water Heater Electric Storage｜Certified Refurbished
About This Product The FOGGTI Etank 25 is a 2.5-gallon mini tank water heater designed for fast, efficient hot water delivery at a single point of use, such as a kitchen or bathroom sink. Its compact, space-saving design allows for easy under-sink or countertop installation and supports both floor-standing and wall-mounted setups. With a 1440W Incoloy heating element, it heats water rapidly by approximately 39°F per minute and maintains temperature effectively thanks to 360° seamless insulation. Simple knob temperature control (55°F-145°F) makes it user-friendly for all ages. The unit can be used standalone or as a booster for an existing system and includes all necessary installation components. It is CSA certified with multiple safety protections.
You save $111.70
Rheem Performance RETEX-18 Electric Tankless Water Heater 18kW Parts Only
Enjoy instant comfort without the bulky tank and wasted energy! 18kW power for efficient, fast heating. Don?t wait ?. Easy installation and durable Rheem quality you can trust. Compact, wall-mounted design saves space.
FOGATTI RV Tankless Water Heater InstaShower 7 Plus, 48000 BTU 2.5 GPM Propane
Tankless water heaters are better than tanked water heaters for continuous showering of multiple people. With 48,000 BTU of power, Fogatti InstaShower can produce a maximum of 2.5 GPM of hot water. So, there is no need to waste 20-30 minutes waiting for hot water in the middle of the shower.
FOGATTI RV Tankless Water Heater 0.5-3.9GPM 66,000 BTU with Door &Remote Control
Experience unlimited hot water on the road with the Fogatti InstaShower Ultra RV Tankless Water Heater. Featuring 66,000 BTU power, ultra-low 0.5 GPM activation, precision temperature control, and high-altitude performance, it delivers reliable comfort wherever your adventure takes you. Built for efficiency, durability, and easy installation — the ultimate upgrade for modern RV living. *Stain & Dust-Resistant Gray Material *Windproof & Waterproof Design *Hybrid Tank for Stable Water *Temperature *Operates Under Low Water Pressure *Works at 9,800ft Altitude *Smart Combustion Control System *Winter Freeze Protection *Built-in Pressure Relief Valve *Multi-Layer Safety Protection System.
You save $89.82
【90% NEW】4 Gallon Electric Mini Tank Water Heater Instant Hot Boiler Under Sink
⚡ Instant Hot Water 1440W fast heating L-shaped 310S stainless steel heating rod Faster heat transfer & reliable hot water 💪 Built for Long Life 0.8mm German enamel tank coating Anti-rust & anti-leak protection Integrated magnesium anode rod 📏 Space-Saving Design Compact & wall-mount ready Perfect for under sink, countertop, RV & camping 🔒 Advanced Safety CSA Certified Overheat protection shuts off at 167°F Adjustable temperature 55°F – 145°F Includes T&P pressure relief valve 🔧 Easy Plug-In Installation 120V / 1440W plug connection 1/2" NPT water connection Max pressure: 150 PSI Recommended breaker: 15A 🛠 Warranty 6 Months.
You save $8.73
14kW Electric Tankless Water Heater OnDemand Quick Install Certified Refurbished
240 Volt 14kW with LED Digital Display ETL Certified Up to 3.36 GPM for 2-3 Point of Use Wall-mounted whole house Heats up in 3 seconds, 98% efficient, saves 60% on electricity costs.
You save $19.76
Tankless Water Heater Natural Gas 120k BTU Whole House｜Certified Refurbished
CSA Certified – Overheat & flameout protection for safety Endless Hot Water – Instant supply, multiple outlets Precise Temp Control – ±1℉ accuracy for comfort Durable Build – Oxygen-free copper tank for longevity Compact Design – 22.8''H × 14.6''W × 7.0''D, saves 50% space Easy Install – Universal 3/4" NPT, hassle-free setup.
Rheem Tankless Water Heater SMART Wi-Fi Control Assembly Module P/N AP23999
Removed from NEW cosmetically damaged Rheem Tankless Water Heater ECO200DXELN-3 Rheem Tankless Water Heater SMART Wi-Fi Control Assembly Module P/N AP23999 You will receive everything pictured 30 day warranty I-N-7(1)
You save $39.60
U24247 BOSCH Electric MiniTank Water Heater Tronic 3000 T 4Gallon ES4 G3D
Check item specifics and photos to ensure you make the perfect choice.
You save $90.77
Propane Gas Tankless Water Heater, Outdoor Max 5.3 GPM, 130,000 BTU Instant Used
【Wide Application】130,000 BTU high heating capacity and maximum 5.3 GPM. It is suitable for 3-5 outlet points, which can satisfy whole family. Equipped with Anti-Freeze Protection: Prevents the water heater from freezing and cracking internally.
RV Tankless Water Heater 65,000 BTU High Altitude Available 12V CS Without Door
It can produce up to Max 3.9 GMP hot water and has 65,000 BTU power. There is no need to wait for the water to heat up and take a quick bath like with a tank water heater. 【We've upgraded. 】On top of the original.
Hike Crew Portable Water Heater, Tankless Water Heater, Camping Heater W/ Pump
Hike Crew Portable Propane Water Heater & Shower Pump – Compact Outdoor Cleaning & Showering System w/LCD & Auto Safety Shutoff for Instant Hot Water While Camping, Hiking – Carry Case Included. Portable outdoor water heater.
You save $209.79
Bosch Tronic 3000 US7 240VAC 40A Point of Use Water Heater Great Condition
Bosch 240VAC 40A Tronic 3000 US7 0.75GPM point of use hot water heater. It is missing the nuts that hold the cover on - they look to be special as the threaded rod is below flush oin the cover.
KDP-CT1W0725A Circulation Pump 250 VAC- 120V - Everon
65,000 BTU RV Tankless Water Heater High Altitude Available 12V CSA Certificated
It is low noise and has good vibration resistance, which is made for caravans. 【Steady temperature】Temperature ranges from 95°F-124°F. This RV tankless water heater with temperature fluctuation eliminates technology that can eliminate the rising temperature to avoid scalding injuries.
Tankless Water Heater Electric, 18KW On Demand Instant - Certified Refurbished !
USED 18kW Tankless Water Heater Electric.
You save $23.79
FOGATTI 2.5/4/8 Gallon Electric Mini Tank Hot Water Heater-Certified Refurbished
🏅【90-99% NEW】Official Refurbished 🏅100% Positive Feedback✅Refurbished❗NOT USE❗ >Excellent heat insulation andmore energy saving. >Faster heating speed,stablet emperature. >Compact design，small size,does not occupy space. >Easy installation.
You save $8.71
Tankless Water Heater Outdoor, Natural Gas 8.1GPM 180K BTU｜Certified Refurbished
Multi-Point Hot Water Supply Instant Heating Precise Temperature Control Quality Components CSA Certificated Constant Temperature Huge Flow Energy Saving Easy to Install.
MIZUDO Tankless Water Heater Propane Gas 80,000 BTU 3.6 GPM CSA Certified
Water heater Type : Tankless. Hot Water Output : 12 L/min (3.6 GPM). Heating SystemInstantaneous (Tankless). Use Gas Type : Propane Gas. Model : 12L Propane Gas. Water Inlet : 3/4" NPT. Save over 50% of available space compared to tank water heater.
Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater
VERY GOOD CONDITION. WORKING CONDITION. Item SKU: S300230.
You save $9.99
MIZUDO 2.5/4/8 Gallon Electric Mini Tank Hot Water Heate【Certified Refurbished】
【Manufacturer Refurbished】 – Good Cosmetic Condition >Excellent heat insulation andmore energy saving. >Faster heating speed,stablet emperature. >Compact design，small size,does not occupy space. >Easy installation.
You save $7.65
BOSCH 27 kw ELECTRIC TANKLESS WATER HEATER TRONIC 6100 C
2.5/4/8 Gallon Electric Mini Tank Hot Water Heater 1440W -Certified Refurbished!
🏅【90% NEW】Official Refurbished❗Units may have some blemishes that include scratches and/or other surface imperfections, that do not affect functionality! >Excellent heat insulation andmore energy saving. >Faster heating speed,stablet emperature. >Compact design，small size,does not occupy space. >Easy installation.
You save $8.55
RV Tankless Water Heater 65,000 BTU High Altitude Available External Shower Used
It is low noise and has good vibration resistance, which is made for caravans. 【Steady temperature】Temperature ranges from 95°F-124°F. This RV tankless water heater with temperature fluctuation eliminates technology that can eliminate the rising temperature to avoid scalding injuries.
66K BTU RV Tankless Water Heater FOGATTI InstaShower 9 Pro Certified Refurbished
♻️FOGATTI Official Refurbished Item♻️. The 3-generation InstaShower RV water heater now boasts66,000 BTU and supplies hot water at up to3.6 GPM. This allowssimultaneous use in the RV's bathroom and kitchen with plenty of capacity.
Eemax SP3512 Single Point Electric Tankless Water Heater w/ Top Connections
Not sure if this is new or used. Looks new to me, but i'll list as used.
Natural Gas Tankless Water Heater Indoor Max3.6 GPM 80,000 BTU Instant Hot Water
Performance: The on-demand tankless water heater boasts a heating capacity of 80,000 BTU and a hot water flow rate of 3.6 gallons per minute (GPM). With an oxygen-free copper water tank, it reduces heat loss and lowers energy consumption.
18KW 240V Electric Tankless Water Heater Boiler for Shower Bathroom 4.17GPM
Things to know before buying, Our Orbek tankless water heater electric 18kw requires2 x 240V/40A two-pole breakers ,2 sets of 8 AWG wires and3/4" NPT water connections. Each product undergoes rigorous testing before leaving the factory to ensure its safety and normal operation.
Reconditioned Titan SCR-4 N-180 tankless water heater. Free same day shipping
Reconditioned N-180 tankless water heater. Looks and Works just like a new unit.
Tankless Water Heater Propane Gas 4.3GPM 100,000BTU Indoor｜Certified Refurbished
【99% NEW】Tankless Water Heater Propane Gas Up to 4.3GPM 100,000 BTU Indoor. MIZUDO 14L LPG Propane Gas Tankless Water Heater On Demand 4.3GPM Indoor. Tankless water heaters can provide endless hot water on demand for 2- 3 water points.
Scratch & Dent - Eccotemp L5 Portable Tankless Water Heater
With educated technical support, manuals, troubleshooting all available at your fingertip you’ll have peace of mind when purchasing an Eccotemp product. Simply attach a garden hose and a 20 lb. You get instant, endless hot water wherever you are.
NORITZ NR98-OD-NG 9.8 GPM Tankless Water Heater
The Noritz NR98-OD-NG 9.8 GPM Tankless Water Heater is a high-quality and efficient water heating system suitable for residential use. With its tankless design, this water heater provides hot water on demand, eliminating the need for large storage tanks and reducing energy waste.
Used Jacuzzi Water Heater Hydromassage Bathtubs Heater CT100 Good Condition
Jacuzzi Water Heater Hydromassage Bathtubs Heater. We want to make you happy, period! Give us a chance to make it right. We follow the golden rule:"In everything, do to others what you would have them do to you.".
MIZUDO Natural Gas Tankless Water Heater 4.3 GPM 100,000BTU For Shower Kitchen
Tankless Water Heater. > Capacity: 3.6 GPM. Heating SystemInstantaneous (Tankless). > Connection Sizes, Cold Water Inlet & Hot Water Outlet & Gas Inlet: 3/4"NPT. Save over 50% of available space compared to tank water heater.
You save $19.90
Propane Gas Tankless Water Heater, Indoor Max 7.4 GPM, 190,000 BTU Instant Used
【Wide Application】190,000 BTU high heating capacity and maximum 7.4 GPM. It is suitable for 4-6 outlet points, which can satisfy whole family. 【Note】We provide a 2-year warranty for the water heater.