Best 30 Amp Tankless Water Heater for 2022 (TOP 15)

Sometimes it might be quite difficult to find the best 30 amp tankless water heater. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this 30 amp tankless water heater buying guide.

Quick Picks:

# Preview Product
1 Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital Display,Electric Instant Hot Water Heater with Self-modulating,Overheating Protection,White Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital...
2 Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected], 6 x 11 x 3 Inch
3 Stiebel Eltron 224201 240V, 7.2/9.6kW DHC-E 8/10 Single/Multi-Point-of-Use Tankless Electric Water Heater Stiebel Eltron 224201 240V, 7.2/9.6kW DHC-E 8/10 Single/Multi-Point-of-Use Tankless Electric Water...
4 Tankless Water Heater Electric 5.5kW 220~240V, thermoflow On Demand Hot Water Heater Digital Display, Electric Instant Hot Water Heater for Sinks, CSA Certified Tankless Water Heater Electric 5.5kW 220~240V, thermoflow On Demand Hot Water Heater Digital...
5 Marey Power Pak Plus Tankless Electric Water Heater, 220 VOLT Marey Power Pak Plus Tankless Electric Water Heater, 220 VOLT
6 240V 5.5KW 4.5KW 3.5KW Instant Electric Hot Tankless Water Heater 3 Power Levels for Bathroom Kitchen RV Camping 240V 5.5KW 4.5KW 3.5KW Instant Electric Hot Tankless Water Heater 3 Power Levels for Bathroom...
7 Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater, 9.5 kW, 6.6' x 12.8' x 2.9', White Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater,...
8 EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1 EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1
9 EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating...
10 Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95 Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
11 thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater,...
12 FMATOZ Mini Electric Tankless Water Heater 4000W 110V Constant Temperature Instant Hot Water Heater with Remote Control Digital Display On Demand Hot Water Heater for Home Kitchen Indoor FMATOZ Mini Electric Tankless Water Heater 4000W 110V Constant Temperature Instant Hot Water Heater...
13 EcoSmart ECO 18 Tankless Water Heater, Electric, 18 kW - Quantity 1 EcoSmart ECO 18 Tankless Water Heater, Electric, 18 kW - Quantity 1
14 Rheem 8kW 240V Tankless Electric Water Heater Rheem 8kW 240V Tankless Electric Water Heater
15 Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water -...

Best 30 Amp Tankless Water Heater Reviews:

Bestseller No. 1
Tankless Water Heater Electric 5.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital Display,Electric Instant Hot Water Heater with Self-modulating,Overheating Protection,White
  • 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 116℉or higher temp shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Time to get rid of those "lukewarm" toys.
  • 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
  • 【CONVENIENT USE】The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and let the smart unit do the rest, you needn’t go through hard lesson about temp setting by a mixer tap without any hint. The Black model comes with Remote control, useful for installation under sink.
  • 【SAFE and DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
  • 【POINT of USE】The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste. It can be mounted horizontally, vertically, obliquely, ideal for kitchen, bar, school, hospital, community and hair salon. Please verify it is the right size for you: [email protected]; dimensions 11" x 7.5" x 2.35"; pipes fittings :1/2" NPT.
Bestseller No. 2
Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected], 6 x 11 x 3 Inch
  • Can provide hot water for one sink at 0.5 GPM in warmer climates
  • Requires 1 x 30 amp breaker and 10 AWG wire
  • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
  • Amperage Draw 29 amp. kW - 3.5 kW
  • Connection Fittings 1/2" NPT
SaleBestseller No. 3
Stiebel Eltron 224201 240V, 7.2/9.6kW DHC-E 8/10 Single/Multi-Point-of-Use Tankless Electric Water Heater
  • No venting required
  • Reduces hot water pipe runs
  • Outperforms bulky hot water tanks
  • Voltage: 240.0
Bestseller No. 4
Tankless Water Heater Electric 5.5kW 220~240V, thermoflow On Demand Hot Water Heater Digital Display, Electric Instant Hot Water Heater for Sinks, CSA Certified
  • 【INSTANT ENDLESS HOT WATER】No need to preheat before using, 2 seconds instant hot, faster heating. As soon as you open the faucet, the water flows with your desired temperature. With 28" fixed power cable, must be hard wired
  • 【LED TEMPERATURE DISPLAY】Features a new upgrade concealed automatic rotate digital temperature control display, a real-time of the water temperature will display when the unit is working, so that you can clear at a glance. Temperature range from 95 °F to 122 °F.
  • 【SMART MODULATION SYSTEM】This hot water heater adjusts power automatically when flow rate and temp setting changes, keeping stable temperature of the output hot water, not too cold or too hot.No waiting for preheat nor terrible temp up & down, perfect companion for sinks.
  • 【TANKLESS & ENERGY SAVING】Save up to 60% on your water heating cost with a Thermoflow electric tankless water heater. Distribution, start-up and technical systems losses as well as circulation and storage losses are eliminated.
  • 【POINT of USE for SINK ONLY】The sleek tankless water heater is compact which can be held in one hand, making it possible to install in narrow space. It can be mounted vertically or upside down, ideal for kitchen, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 5.5 [email protected] volts; dimensions 5.4" x 7.4" x 3.4 ; pipes fittings 1/2” NPT; max water pressure: 115PSI; required wire: 1 × 12 AWG; required breakers 1 x 2-POLE 30 AMP. Breaker is NOT included.
SaleBestseller No. 5
Marey Power Pak Plus Tankless Electric Water Heater, 220 VOLT
  • Allows customer to regulate energy consumption, adapting the product to the home’s electric capacity
  • Easy management and simple adjustments
  • Filter on the water inlet that avoids sediments to damage the unit
  • Perfect for under the sink one point of use installation; requires very low water pressure to activate
  • Save up to 60% on electricity bills for water heating
Bestseller No. 6
240V 5.5KW 4.5KW 3.5KW Instant Electric Hot Tankless Water Heater 3 Power Levels for Bathroom Kitchen RV Camping
  • Power setting and constant temperature function with the mini size water heater, 3 power levels(5.5KW 4.5KW 3.5KW), 10 power settings per level
  • Super low water pressure start-up, and microcomputer memory, anti-dry functionality, water leakage and earth leakage prevention.
  • Digital LCD temperature dispaly with touch control in 1-degree increments allows control of hot water
  • Request Breaker: 30A and Standard Pipe Section G1/2" water connection (Very important: You must run this heater on 240V Voltage)
  • Important: This is good for shower, but don't provide multi-way hot water supply in the same time with this instant electric water heater..
Bestseller No. 7
Bosch Thermotechnology 7736505871, 9.5kW, Bosch US9-2R Tronic 3000 Electric Tankless Water Heater, 9.5 kW, 6.6" x 12.8" x 2.9", White
  • ELECTRIC TANKLESS WATER HEATER: 9.5 kW under-sink tankless water heater designed to provide an endless supply of instantaneous hot water to one or more sinks
  • FLEXIBLE INSTALLATION: Can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible, worry-free setup. Due to the amperage requirement this item will be hard wired.
  • EFFICIENT DESIGN: Ultra compact and lightweight design with 98% efficiency and no stand-by heat loss plus does not require a temperature or pressure relief valve
  • DURABLE PLASTIC CONSTRUCTION: Roundagon Bosch DNA design provides a modern look that blends in seamlessly with existing decor when installed in a visible location and is built of durable plastic housing for long-lasting use
  • IDEAL SIZE: Measures 6.6" x 12.8" x 2.9", making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and offices.
SaleBestseller No. 8
EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Heating elements are durable and are threaded for easy replacement
  • Activation Flow - 0.3 GPM
SaleBestseller No. 9
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
  • 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
SaleBestseller No. 10
Ecosmart POU 6 Point of Use Electric Tankless Water Heater, 6 KW,White,1/20, 1/40, 1/95
  • Can provide hot water for one sink at 0.5 GPM in warmer climates
  • Requires 1 x 30 amp breaker and 10 AWG wire
  • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
  • This product is recommended for use with a single sink only. Do not use with a shower or multiple fixtures.
  • This unit operates at 220 volts and one should not use a plug while installing. This product is hard wired
Bestseller No. 11
thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise
  • [Endless On Demand Hot Water] - Consistent hot water that never runs out when you need it. Continuously detect water temperature and flow rate to ensure efficient heating and stable performance within 1°F of your selected temperature. REQUIRES 2 SET of Double-pole 30AMP Breakers
  • [Last Long & No Leaking] - Alloy metal housing & water ports, heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
  • [Save Money and Space] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces
  • [Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
  • [Installation] - 11 kilowatts at 240V draws max 46amp, 1/2” NPT male ports, 12AWG wire to 2 Double-pole 30AMP breakers, ideal for providing hot water for a bathroom, small sink, office break room and other point-of-use or low-flow applications
SaleBestseller No. 12
FMATOZ Mini Electric Tankless Water Heater 4000W 110V Constant Temperature Instant Hot Water Heater with Remote Control Digital Display On Demand Hot Water Heater for Home Kitchen Indoor
  • INSTANT HOT WATER HEATER - Applied with 5500W heating system, the electric tankless water heater supplies instant hot water, 3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to 55℃/131℉. It is perfect companion for sinks, bringing you perfect experience of comfort and relaxing.
  • REMOTE CONTROL OR TOUCH SCREEN - Ultra slim and smooth appearance design, beautiful and elegant. The temperature can be adjusted by remote control and touch control, which is more convenient to use, can avoid wet hands to adjust, and is safer; constant temperature water outlet three-level power adjustment, bid farewell to cold and hot
  • SAVE SPACE AND ENERGY - Compact design, our tankless Hot Water Heater is only the size of a small suitcase, and the wall-mount design frees up valuable floor space within your home. And 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.
  • EASY TO INSTALL - The home water heater has a mini body, easy to install in the bathroom, kitchen, and under the sink.Standard 1/2 interface(inflow or outflow), can be directly connected to household conventional hose connectors.because the power of water heater is high, the rated current is about 30 amp. The maximum load of the general home plug socket only provides 16amp (3000W)Can't load the power consumption of water heater, so it is not equipped with a plug.It is necessary to use the control line access to the connector that is greater than or equal to 30 amp contacts as the main gate to provide sufficient power and ensure safety
  • SAFE TO USE - With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water to use on your schedule. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion.
SaleBestseller No. 13
EcoSmart ECO 18 Tankless Water Heater, Electric, 18 kW - Quantity 1
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
  • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
Bestseller No. 14
Rheem 8kW 240V Tankless Electric Water Heater
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 8kW Model Flow Rate: up to 1.95 GPM
  • Side 1/2" NPT water connections
  • On demand; continous hot water
SaleBestseller No. 15
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

Last update on 2022-12-08 / Affiliate links / Images from Amazon Product Advertising API

How to find the best 30 amp tankless water heater?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best 30 amp tankless water heater for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good 30 amp tankless water heater recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the 30 amp tankless water heater need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for 30 amp tankless water heater to find what you’re looking for:

Brand

In some cases, the brand of 30 amp tankless water heater is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given 30 amp tankless water heater are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about 30 amp tankless water heater are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare 30 amp tankless water heater quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best 30 amp tankless water heater can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.