10 best instant water heater for 2018

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Finding your suitable instant water heater is not easy. You may need consider between hundred or thousand products from many store. In this article, we make a short list of the best instant water heater including detail information and customer reviews. Let’s find out which is your favorite one.

Product Features Editor's score Go to site
Watts 500800 Instant Hot Water Recirculating System with Built-In Timer, Easy to Install Watts 500800 Instant Hot Water Recirculating System with Built-In Timer, Easy to Install
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EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology
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Bosch Tronic 2.5-Gallon Electric Mini-Tank Water Heater Bosch Tronic 2.5-Gallon Electric Mini-Tank Water Heater
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Anaheim AH-1300 Quick and Hot Instant Hot Water Tank Anaheim AH-1300 Quick and Hot Instant Hot Water Tank
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Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater
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Atmor Hand Washing SINGLE SINK 3kw/110V, 0.5 GPM Point-Of-Use Tankless Electric Instant Water Heater with Pressure Relief Device and 0.5 GMP Sink Aerator, AT-900-03 Atmor Hand Washing SINGLE SINK 3kw/110V, 0.5 GPM Point-Of-Use Tankless Electric Instant Water Heater with Pressure Relief Device and 0.5 GMP Sink Aerator, AT-900-03
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Bosch Electric Tankless Water Heater Bosch Electric Tankless Water Heater
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CORAL MAX 110V (NEW MODEL) Electric Instant Hot Water Shower Head Heater + FREE wall support/tube Included CORAL MAX 110V (NEW MODEL) Electric Instant Hot Water Shower Head Heater + FREE wall support/tube Included
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Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected]
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Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation
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Reviews

1. Watts 500800 Instant Hot Water Recirculating System with Built-In Timer, Easy to Install

Feature

WATTS HOT WATER RECIRCULATING PUMP: Provides hot water at every faucet or shower when needed, eliminating wasted water
BEST SELLER RECIRCULATING SYSTEM: Conserve Water - Up to 15,000 gallons of water per year. Save Money - Up to 10% of your water bill and its cost only 5 a day to operate
EAST TO INSTALL: This unique product connects easily to existing plumbing. Easy to install in less than 1 hour. And it is maintenance free
WATTS HOT WATER RECIRCULATING SYSTEM: The Kit Includes: Pump with timer, 2 adapters with rubber washers, valve mounting screws, sensor valve, two 12-inch supply lines
RECIRCULATING PUMP WITH TIMER: 24-hour programmable timer activates pump when you need it. And it is extremely quiet compared to other system in the market - no vibrations. Do not use with tankless water heaters

Description

Specification:

  • Voltage: 120 volts
  • Item Weight: 8.5 pounds
  • Overall Dimension: 6.2 x 6 x 5 inches
  • Size: Full
  • Color: Blue
  • Material: Case
  • Warranty: 1 Year

Never wait for hot water again! The Watts Hot Water Recirculating Pump provides hot water at every faucet or shower when needed, eliminating wasted water. It is easy to install on any water system and requires no additional piping. The unique design of the pump ensures quiet, maintenance-free operation. The system includes a built-in 24 hour, a dual setting programmable timer to activate the pump only when needed. System that provides instant hot water to every faucet or shower in a home when you need it. Stop throwing money down the drain and waiting for your hot water.

2. EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology

Feature

Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
Digital temperature control in 1-degree increments allows control of hot water
Copper and stainless components designed for efficiency, durability and easy replacement.
Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.
Required Breaker Quantity: Three 40 Amp Double Pole
Recommended Electrical Panel: 200 Amps
NEVER run out of hot water with an ECOSMART tankless water heater.
Save up to 12 cubic feet of storage space.
Digital temperature control in 1-degree increments gives users complete control of hot water

Description

Configured for cold climates or high flow rates. Well suited where incoming water temperature can drop below 45 F. For use in more demanding water usage applications. Self modulating flow sensor technology regulates the amount of energy required to heat the water needed. Digital temperature display showing the outlet water temperature setting. Uses (3) 9 KW standard Emerson electric heating elements with brass tops to prevent electrolysis. Copper heat exchanger. Automatic resettable thermostat. (3) 40 DP breakers required. 112A draw. Required wire: 3 sets 8 AWG. Pipe fitting: 3/4'' NPT. Energy efficiency: 99.8%. UL and CSA certified.Weight: 11 lb. Lifetime warranty.

3. Bosch Tronic 2.5-Gallon Electric Mini-Tank Water Heater

Feature

2.5-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it
Electric water heater is easy to maintain and has glass-lined tank for long service life.Amps 12A. Volts (VAC) 120
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. Supplies up to 2 sinks at a time
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

Description

Get hot water where it's needed, when it's needed with the Bosch ES4 Tronic 3000 T Electric water heater. This 2.5-gallon capacity point-of-use mini-tank fits right under your sink and provides a practical and effective solution to your hot water needs. This smaller model can be plugged right into a 120-volt outlet with the 36-37" cord, or can be installed in-line with a larger hot water source to provide "on-demand" use. The glass-lined tank offers great insulation and added durability, while the heater's fast recovery rate eliminates long waits for hot water. An external dial allows you to easily control the temperature range, and the temperature-and-pressure relief valve enhances your safety. The ES4 Tronic 3000 T from Bosch has a sleek and attractive exterior design that blends in seamlessly with existing dcor when installed in a visible location, making this heater a great option in any room.

4. Anaheim AH-1300 Quick and Hot Instant Hot Water Tank

Description

waste king ah-1300-c 1300 watt quick and hot tank

5. Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater

Feature

Lowest water pressure startup on the market! Just need 2.5 PSI of water pressure. Also works great with Camplux 12V 1.2GPM water pump.
The maximum temperature raise is 114.8(46) and the minimum temperature raise is 46.48for 1.32GPM.
Its compact size with folding handle keeps it out of the way, allowing for a convenient set-up outdoors.
20 mins automatic safety device, flame failure device, anti-freezing protection and oxygen depletion safety shutoff protection.
1.32 gallons per minute of hot water output, energy saving technology. You can get instant endless hot water easily wherever you are.

Description

1.The Camplux AY132 is great for taking camping, to the beach or family vacations mountain cabins horse stables etc.
2.With Oxygen Depletion Sensor protection, it can be also installed indoors where is well ventilated.
4.Turn the ignition on with 2 "D" batteries whenever electricity is not accessible!
4.The ideal low water pressure operating range for the Camplux AY132 is 2.5110.0 PSI, work easily with great performance.
5.The system also works great on modified water systems with a 12 volt water pump.
6.The operating propane gas pressure is 0.4PSI with maximum power output 34000btu/hour.
7.The gas water heater can't be used for drinking water.
8.It may result in gas leak or even fire if you forget to put the gasket into the adapter before connecting the regulator to the heater! Reviewing the feedback from previous customers, some of their heaters caught on fire because of their unproper installation.

Easy to Use
Get the instant portable gas hot water system that's easy to set up and use!
1. Hang the gas water heater using the handle provided, or install the water heater on the wall.
2. Connect the gas cylinder with the supplied gas hose and regulator.
3. Connect shower hose and shower head to the hot water outlet.
4. Connect water hose to the water inlet.
5. Insert 2 "D" cell batteries.
6. Enjoy instant hot water!

What's in the Box
1 x Camplux portable hot water system
1 x 3 setting ON/OFF shower head and pedestal
1 x 5"ft premium shower hose
1 x 5"ft CSA approval gas hose & regulator
1 xgarden hose: 1/2" BSP Female x 3/4" GHT Female
1 x garden hose: 1/2" BSP Female X 3/4" GHT Male
1 x gas inlet connector: 1/2" BSP Female x 5/8" NPT Inverted Flare Male
1 x accessories packageincluded water tape & screws
1 x instruction manual

Inquiry & aftersales service: [email protected]

6. Atmor Hand Washing SINGLE SINK 3kw/110V, 0.5 GPM Point-Of-Use Tankless Electric Instant Water Heater with Pressure Relief Device and 0.5 GMP Sink Aerator, AT-900-03

Feature

Ideal for single sink application in areas with at least 57 ground water temperature
Maximum flow rate 0.5 GPM (Gallons per Minute) = 45 F temperature rise. Slower flow rate = higher temperature rise.Max tested working pressure: 16 BAR (230 PSI)
Requires a direct connection to a 30 Amp single-phase breaker. Required wire size: 10 AWG. Not a plug-in unit.
Instant and endless hot water on demand without the wait or worry of ever running out
Includes a 0.5 GPM Aerator for sink faucet and Pressure Relief Device (PRD)

Description

SAVE ENERGY, WATER, MONEY, TIME Atmor offers the efficient and convenient water heating solution you have been looking for. Atmor 3kW/ 110V Point-of-Use Tankless Electric Instant Water Heater provides an unlimited flow of hot water without the wait or worry of ever running out. Thats right, instant hot water on demand! This unit is specifically designed for hand washing SINGLE SINKS in areas with at least 57F ground water temps (See Sizing Guide). Please note that this unit will not operate properly in Northern regions with inlet water temps colder than 57 degrees. A flow rate of 0.5 gallon per minute (GPM) is required in order to achieve a 45 temperature rise. Perfect for residential and commercial use, this compact unit can be installed against the wall either under the sink out of sight or near the point of use. Unit requires a 30 Amp dedicated single-phase breaker. This is NOT a plug in unit. Required wire size: 10 AWG. Standard 1/2" NPT (straight thread) fittings. Maximum flow rate is 0.5 GPM. Maximum temperature rise possible for unit is 45F. For safety reasons, the included Pressure Relief Device (PRD) included must be installed on your water heater per the instructions in the owner's manual. In order to achieve maximum performance, it is recommended to install the included 0.5 GPM sink aerator. Failure to comply with the installation and operating instructions in our Owners Manual or improper use will void the warranty. The water heater must be installed by a licensed electrician in compliance with all local and building regulations.

7. Bosch Electric Tankless Water Heater

Feature

9.5 kW output tankless electric water heater eliminates long waits for hot water at point-of-use
Easy installation under bathroom or kitchen sink
Mounts on wall in any direction and is space saving, ultra-compact, and lightweight
98% efficient with minimal stand-by loss. Unit operates on 220-Volt at 84-Percent capacity and on 208-Volt at 75-Percent capacity
Unit operates on 220-Volt at 84-Percent of capacity and on 208-Volt at 75-Percent of capacity

Description

The Bosch US9 Tronic 3000 electric tankless water heater is designed to provide an endless supply of hot water to kitchen, bathroom, and handwashing sinks. This 9.5 kW electric heater eliminates long waits for hot water by using a dual chambered copper heat exchanger. The unit runs at 98% thermal efficiency, so stand-by loss is minimal. Plus, it mounts on the wall in any direction and is compact and lightweight, making it a great choice for a variety of spaces. This item requires professional installation and hardwiring. With its top performance specifications and versatility, the US9 Tronic 3000 is a great way to get the hot water going in kitchens, offices, at warehouses, service stations, stores, and concession stands.

8. CORAL MAX 110V (NEW MODEL) Electric Instant Hot Water Shower Head Heater + FREE wall support/tube Included

Feature

Includes Exclusive Free Arm/Pipe/Tube/Support (14.99 Value)
Includes Free "Bidet" extra mini-showerhead connected to a 4' mini hose for optional intimate higiene
Exclusive : 17 inch Coated Wire Harness for Safety
Exclusive : 3 Power Settings Selector : 1870W - 3200W - 4500W
REQUIRES DEDICATED 40AMP BREAKER AND 10 AWG WIRING

Description

EXCLUSIVE 3 POWER SETTING SELECTOR 110 Volt Unit Includes FREE wall support/tube - a $12.99 value others show it in the listing but the small print says it is not included You are buying the world famous CORALMAX ELECTRIC SHOWER HEAD TANKLESS HOT WATER HEATER PERFECT FOR POOL SIDE HOT SHOWER RINSE OFFS, ALSO GREAT FOR CABINS WHERE YOU DON'T REALLY NEED A HOT WATER HEATER PLUS ALL THE EXTRA PIPING. THESE SHOWER HEADS ARE USED IN 80 % OF ALL HOUSEHOLDS IN BRAZIL AND THEY WORK GREAT. OPERATES ON 110 VOLTS . YOU ONLY NEED TO CONNECT IT TO THE NEAREST BREAKER (REQUIRES A DEDICATED 40AMP BREAKER AND 10 AWG WIRING). YOU WILL NEVER RUN OUT OF HOT WATER. EVERYONE GETS A HOT SHOWER. WORKS GREAT EVEN WITH 2PSI WATER PRESSURE UP TO 150 PSI. With remarkable electronic technology that requires the outstanding Coral heater saves up to 25% in electric bills. Compact Exquisite Design: The water heater's compact design, the size of shower head, takes up reduced space and attractively decorate modern living spaces. Infinite applications can be found for the extraordinary Excel tankless water heater. Our customers also use them for washing stalls,horse trailers, de-icing cars in the winter, outdoor camping, RV s, motels, small roadside restaurants and other situations where endless and economical water heating is required .

9. Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected]

Feature

1 Year warranty
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Never run out of hot water with an ECOSMART tankless water heater
Sleek and compact design with digital output temperature display
ECOSMART tankless water heaters are 99.8-percent energy efficient

Description

This electric tankless water heater is a true Point of Use Model because it is specifically designed for under the sink, single applications with a maximum flow rate of 0.5-Gallon per minute (gpm) and includes a 0.5 gpm sink aerator. This heater is flow controlled, meaning the temperature will adjust according to flow rate. It is the smallest sized Ecosmart electric tankless model and should not be used to run anything more than one sink at a time or used in areas where inlet water temperature is lower than 57F. At this inlet temperature the ECO POU 3.5 can heat 0.5 gallons per minute to 105F. Its compact size allows for under the sink installations. The Point of Use models are ideal for: Wet Bars, Strip Malls, Doctor's Office, Boats, Recreational Vehicles (RVs), Bathroom Sinks. When sized properly this water heater will provide endless hot water. Prior to purchase and installation please verify this model is the right size for the expected demand and electrical requirements. The Eco POU 3.5 requires a minimum 100 amp electrical panel for installation with (1) 30 amp single pole breaker connected to #10 awg wire. Plumbing connections are 1/2" NPT. For additional assistance please feel free to contact our support center at 877-474-6473. TROUBLE SHOOTING STEP: When the water is not hot enough, please slow down the flow of water to increase temperature!

10. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation

Feature

Concentric or PVC venting option
Up to 0.96 Energy Factor/Up to 0.92 Uniform Energy Factor
The space-saving design allows Indoor Installation type
Ultra low NOx emissions
199,000 max BTU

Description

Rinnai takes tankless water heating one step further with condensing technology that delivers more efficiency than ever before. Enjoy all the same tankless benefits youve come to expect from Rinnai, plus even greater energy savings. Features: 95% Thermal Efficiency Natural gas or propane Indoor Installation Only 98 F to 140 F Residential Temperature Range 98 F to 185 F Commercial Temperature Range Commercial Controller Must be Purchased Separately Gas Rate Input BTU's: 15,200 - 199,000 Electronic Ignition Meets California and Texas NOx Emissions Standards Compatible with Full Line of Rinnai Digital Controllers 12-Year Warranty on Heat Exchanger, 5 Year Parts, 1 Year Labor for Residential Installations Specifications: Width: 18.5" Height: 26" Depth: 10" Weight: 61.7 lbs Gas Connection: 3/4" Water Connection: 3/4"

Conclusion

All above are our suggestions for instant water heater. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using instant water heater with us by comment in this post. Thank you!

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