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Table of Contents
- 1 Best On Demand Water Heater Reviews
- 2 Offers and Discounts
- 3 Cheap On Demand Water Heater
- 4 Buy On Demand Water Heater Online
- 4.1 Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
- 4.2 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
- 4.3 Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
- 4.4 Chefman Electric Hot Water Pot Urn w/ Manual Dispense Buttons, Safety Lock, Instant Heating for Coffee & Tea, Auto-Shutoff/Boil Dry Protection, Insulated Stainless Steel, 5.3L/5.6 Qt/30+ Cups
- 4.5 NutriChef Hot Water Urn Pot - Insulated Stainless Steel, Manual & Auto Dispense, Safety Lock Shutoff 3.38 QT /3.2L - Auto Shut Off
- 4.6 110V-120V 1.5Kw Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage,Mini Instant Electric RV TR Trailer Kitchen Compact Point-of-Use
- 4.7 Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Portable Gas, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, White
- 4.8 Rheem 18kW 240V Tankless Electric Water Heater
- 4.9 EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
- 4.10 Rheem HotWave Multipurpose Heated Hose Nozzle Sprayer, Red
- 5 Best On Demand Water Heater 2025
Best On Demand Water Heater Reviews
TOP CHOICE
Bosch Thermotechnology
EcoSmart
GOOD PRICE QUALITY RATIO
Rheem
- CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37 cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
- Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: Energy Efficient
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
- EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy
- Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
- Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
- 54 A
TOP CHOICE
Bosch Thermotechnology
Score
-
- CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37 cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
EcoSmart
Score
- Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: Energy Efficient
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
- EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
GOOD PRICE QUALITY RATIO
Rheem
Score
-
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy
- Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
- Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
- 54 A
Offers and Discounts
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Cheap On Demand Water Heater
The cheapest options among the top 10:
Buy On Demand Water Heater Online
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
- CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
- Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: Energy Efficient
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
- EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy
- Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
- Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
- 54 A
Chefman Electric Hot Water Pot Urn w/ Manual Dispense Buttons, Safety Lock, Instant Heating for Coffee & Tea, Auto-Shutoff/Boil Dry Protection, Insulated Stainless Steel, 5.3L/5.6 Qt/30+ Cups
- EASY TO DISPENSE: The Chefman Hot Water Pot has 3 dispense buttons for easy, instant hot water. Use the one-handed dispense button under the spout for filling cups or bottles, the manual push pump or auto dispense on the control panel for quick dispensing.360° turnbase for easy access.
- STAYS HOT FOR HOURS: The 700-watt insulated pot keeps water warm throughout the day, so you never have to wait for the kettle to boil, while stainless steel exterior and interior ensure long-lasting performance. With 5.3-liter and 30+ 5.7 oz. cup hot-water capacity, this hot water urn is perfect for parties and entertaining.
- EASY VIEW WATER LEVEL: Water level gauge for easy viewing so you can see how much water you are filling the pot with, as well as see when it gets below the minimum line. Convenient carry handle lets you bring this water dispenser with you easily.
- SAFETY FEATURES: For added safety, the water urn shuts itself off once the pot is empty or the water has dried out. Designed with a locking lid to prevent spills if it tips over, as well as a child safety lock for dispense and reboil buttons to prevents spilling and accidental pouring.
- RESOURCES: cETL approved with advanced safety technology for long lasting durability, & 1-year warranty provided by Chefman, so you can purchase worry-free. For information on how to use your product, scroll down for a PDF User Guide. Power Source: 120 Volts
NutriChef Hot Water Urn Pot - Insulated Stainless Steel, Manual & Auto Dispense, Safety Lock Shutoff 3.38 QT /3.2L - Auto Shut Off
- KEEP WATER HOT PERCOLATOR: The cordless electric kettle boils water and keeps liquids hot in a hot pot kettle for quick warming and a vacuum insulation keeps water warm, longer.Power: 120V
- SIMPLE PLUG-IN OPERATION: The kettle electric features a convenient power cord, as well as an auto power off function, LED illuminated power indicator and a child safety lock-on lid
- COMPACT TABLETOP DESIGN: The electric water kettle is safe for placement on any kitchen table or countertop, making it suitable for anytime use. Entertain your guests or pour yourself a coffee or tea with ease & style
- GOOD FOR ENTERTAINING: The electrical water boiler features a multi-dispense ability with three modes including auto, button & pump. The button-activated water dispense function makes entertaining and catering to your guest's needs easier than ever
- LARGE WATER CAPACITY: The hot water kettle electric features a large water capacity of 3.38 quarts, which means fewer refills and more time spent with your guests. Note : Refer to the PDF attached below in Technical Specification for User Manual
110V-120V 1.5Kw Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage,Mini Instant Electric RV TR Trailer Kitchen Compact Point-of-Use
- 【SAFE DURABLE & LONGEVITY】Made of stainless steel and never rust,Anti-leakage plug,Multiple safety protection functions protect you from the risk of scald, leakage or other injury.Premium plastic shell is corrosion resistant,This mini hot water heater is ideal for kitchen, bar, school, hospital, community and RV.
- 【SMART INVERTER FOR ENERGY SAVING】Automatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%,Maximum temperature149℉,The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.
- 【EASY TO USE】storage tank electric water heater with easy-to-operate knob temperature adjustment design,Easy to control warmth.Vent valve, Tee pipeline, pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.
- 【FAST RECOVERY RATE】Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time,8-15 minutes to heat to your desired temperature).
- 【COMPACT DESIGN】Can be shelf, wall or floor mounted (Water inlet and outlet upward); Dimensions: 13.0''L x11.4''W x10.6''H; 9.5lbs; 1/2″NPT NPT. 1.5 kW, 110-220 volts. One-year warranty and 24H customer service support, feel free to contact us.
- If you have any questions about the product, you can contact us in time, and the customer service is online 24 hours a day for you
Tankless Water Heater, GASLAND Outdoors BE158 1.58GPM 6L Portable Gas, Propane Water Heater, Overheating Protection, Easy to Install, Use for RV Cabin Barn Camping Boat, White
- 𝟭.𝟱𝟴𝗚𝗣𝗠/𝟲𝗟 𝗣𝗿𝗼𝗽𝗮𝗻𝗲 𝗪𝗮𝘁𝗲𝗿 𝗛𝗲𝗮𝘁𝗲𝗿 - Maximum power output 41,000BTU/Hr.The temperature raise is 109.4℉ (43℃) at its highest point and 55.4℉ (13℃) is at its lowest point of 1.58 GPM. Also, 1.58 gallons of hot water can be produced per minute at the flow rate of 1.58 GPM. Low water pressure start up, just need 3.6 PSI of water pressure to start.
- 𝗚𝗼𝗼𝗱 𝗳𝗼𝗿 𝗢𝗳𝗳-𝘁𝗵𝗲-𝗚𝗿𝗶𝗱 - Runs on a standard 20 lb. liquid propane tank and is equipped with an electronic ignition powered by two D-cell batteries. Can be used in a variety of scenarios: while you're camping, RVing, hunting, hanging poolside, washing your pets or horses, cleaning your vehicle, or even in your tiny home, greenhouse, or cabin house.
- 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗦𝗮𝘁𝗲𝗳𝘆 𝗣𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺 - With CSA certification, safe as per Canadian and US Standard. Features over-heating protection, low water flow protection, dry combustion protection, anti-freezing protection, high water pressure protection and flame failure device.
- 𝗟𝗘𝗗 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗗𝗶𝘀𝗽𝗹𝗮𝘆 - Bright power, the temperature readout as to not get the water to hot or cold.
- 𝟭-𝗬𝗲𝗮𝗿 𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 - We provide a 1-year Warranty against manufacture defects and lifetime customer support.
- 𝗪𝗵𝗮𝘁'𝘀 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝗱 - GASLAND BE158 Tankless Water Heater, CSA certified gas regulator and hose,5 feet On/Off Switch Shower Head, mounting hardware, garden hose adapter, Manual.
Rheem 18kW 240V Tankless Electric Water Heater
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
$435.00
Buy on AmazonEcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
- Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
- Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches
- Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
- EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
- Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
- Required Breaker Quantity: Three 40 Amp Double Pole
Rheem HotWave Multipurpose Heated Hose Nozzle Sprayer, Red
- ON-DEMAND HEATED WATER OUTDOORS: Rheem HotWave provides on-demand heated water outdoors whenever and wherever it's needed. Safe and easy to use, HotWave gives you control of the water temperature, spray patterns, and water pressure.
- FITS STANDARD GARDEN HOSE & OUTLET: Simply connect to a standard garden hose and electrical outlet. HotWave comes with a 25’ electrical cord with GFCI, 120V, 15 AMP connection.
- FOUR ADJUSTABLE SPRAY PATTERNS: Choose from four versatile spray patterns; Flat, Jet, Center, and Shower. Ideal for a large variety of jobs such as pet grooming, rinsing off outdoor furniture and patio items, and camping/RV living.
- WATER PRESSURE CONTROL AND TRIGGER LOCK: Easily control the water pressure by pushing the control lever with a single finger. For jobs that require continuous water flow, use the convenient trigger lock mechanism that allows you to keep a steady stream without having to squeeze the trigger.
- HEATED WATER FOR OUTDOOR/RV LIVING: Having heated water as you travel in your RV or go camping can make the outdoor experience even more enjoyable. HotWave is perfect for washing or rinsing your dishes outside. The hook attachment feature on HotWave even allows you to hang it outdoors and use it as a shower.
After seeing the best On Demand Water Heater 2024 lets look into the future:
Best On Demand Water Heater 2025
These are the new On Demand Water Heater releases available. Will the best On Demand Water Heater 2025 be among them?
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Last update 2021-09-03. Price and product availability may change.