Best tankless water heater Reviews 2023 [Top Rated in USA]

Updated By Luke Green on Sep 7, 2024

top rated items tested 35 Items Tested
Testing Time 28 Testing Time
Experts interviewed 13 Experts Called
best Reviews analyzed 319 Reviews Inspected

Hey there! When you are considering purchasing one of the best tankless water heater, you’re in luck because I’ve got a recommendation for you. I’ve had the pleasure of using my tankless water heater for a while now and it’s exceeded my expectations in terms of dependability, functionality, and price. Let me share my experience with you and assist you in making the smart choice that fits your needs and budget.

At our business, we recognize the value of selecting the ideal tankless water heater. That’s why our team has spent tons of days analyzing various products to offer top-notch choices to you. Our leading pick, , is the embodiment of quality, with its exceptional capabilities and unique features. Although it may not be the most budget-friendly option, its quality makes it worth the investment. For those looking for a cost-effective option, we advise , which still provides the essential features at a reduced price point.

Check out all the tankless water heater at a glance in the comparison table and choose the most ideal tankless water heater of [CY]. This provides you with quick insights and helps save you time. All product listed was chosen and evaluated by experts in the field.

[CY]’s Best tankless water heater Reviews: Find Your Perfect Match in the USA

EcoSmart ECO 11 Electric instant water heater with patented self-regulating technology, 13 kW at 240 V – Best tankless water heater 2023

#$#$ tankless water heater #$$#
/10Our Score
Key Features
  • Unlimited hot water on demand. Never run out of hot water when you need it. Continuously controlled water temperature and adjustable flow rates ensure efficiency and stable operation within 1 degree of the selected temperature.
  • Space saving. EcoSmart instant water heaters are 90% smaller than traditional water heaters. Can be wall or field mounted.Dimensions 11.5 x 8 x 3.75 inches
  • To save energy; the thermal energy efficiency of EcoSmart instant water heater is 99%. Heats water only when needed, unlike tank heaters that maintain water temperature even when not in use.
  • Ecosmart ECO 11 size. The 13kW instant water heater is perfect for providing hot water to bathrooms, small sinks, office break rooms and other low or low flow applications. Delivers 1.3 to 3.1 gpm depending on feed water temperature. See our sizing guide for choosing the right solution.

EcoSmart ECO 27 Instantaneous Water Heater Electric 27kW – Qty 1, 17 x 17 x 3.5 – Inexpensive Budget Pick in USA

inexpensive tankless water heater in budget
/10Our Score
Key Features
  • Unlimited hot water on demand. Never run out of hot water when you need it. Continuously controlled water temperature and adjustable flow rates ensure efficiency and stable operation within 1 degree of the selected temperature.
  • Space saving. EcoSmart instant water heaters are 90% smaller than traditional water heaters. Can be wall or field mounted.Dimensions 17 x 17 x 3.75 inches
  • To save energy; the thermal energy efficiency of EcoSmart instant water heater is 99%. Heats water only when needed, unlike tank heaters that maintain water temperature even when not in use. According to the Department of Energy, you can save up to 50% on hot water costs.
  • Ecosmart ECO 27 size. Please refer to the size chart. Requires 3 x 40 AMP 2-pole switch, 27kW instant water heater, ideal for hot water heating throughout the home. Delivers 2.7 to 6.5 gpm depending on feed water temperature. See our sizing guide for choosing the right solution.
  • Warranty and Certificate. Limited lifetime warranty on electronics, heat exchangers and elements. UL-499 certified. Listed by ETL

Rheem 18kw 240v Instantaneous Water Heater – Also Great!

commercial tankless water heater DAORDAER 3000W 110V Mini Electric Instant Water Heater Constant Temperature Instant Water…
/10Our Score
Key Features
  • External digital thermostat with LED display (accuracy +/-1 degree)
  • State-of-the-art self-adjustment, output adjustment according to hot water supply needs
  • Robust copper immersion heater with two heating elements, field repairable. Flow rate – up to 4.4 gpm
  • Easy to install – 3/4 inch NPT bottom water connection
  • Easy replacement, screws for easy installation, digital temperature display

EcoSmart ECO 18 Electric Instantaneous Water Heater 18kW 240V with Patented Self-Modulation Technology

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/10Our Score
Key Features
  • Product is very durable
  • Product is easy to use
  • made in china
  • Current (Amps) – 7 Activation Flow Rate – 0.3 gpm.Lift flow rate 35 F (gpm) – 51 US gallons per minute
  • This product works and is compatible with two 40 amp circuit breakers (DP) and 2 x 8 AWG wire.

Rheem Prestige 9.5 GPM Natural Gas High Efficiency Instantaneous Water Heater – Affordable

affodable B0047RAQZG
/10Our Score
Key Features
  • Don’t wait to get hot water and don’t waste it
  • Low running costs – high energy efficiency and water savings
  • Space Saving – Compact and space-saving design. Great for tank replacement.
  • If a water gas leak is detected, the device will turn off and issue an error code.
  • Indoor use only

Eco smart ECO 36 36kW 240V electric instant water heater

powerful Residential Instantaneous Water Heater Rheem 240V RTEX-13, Gray
/10Our Score
Key Features
  • Elegant and compact design with digital outlet temperature display
  • The ECOSMART instant water heater is 99.8% energy efficient.
  • made in usa
  • Tube fitting – 3/4 inch NPT
  • Required switch – 4 x 40A

Rinnai Non-Condensing Natural Gas Water Heater V65iN Indoor Installation Up to 6.5gpm

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/10Our Score
Key Features
  • ORIGINAL DESIGN – The water heater heats only when needed to save energy. Check out the new RE160iN with the latest non-condensing technology and a more user-friendly layout for faster maintenance and installation.
  • A compact instant gas water heater that never runs out of hot water. Rinnai’s instant non-condensing water heaters are about the size of a small suitcase and fit in a variety of spaces while delivering up to 6.5 GPM (5 units simultaneously).
  • Smart, Reliable Design – Better scale recognition helps prevent serious long-term damage to your device. Includes 15, 5 and 1 year private warranties on heat exchangers, labor and parts. See controller module for WiFi control (sold separately)
  • Professional installation recommended. Visit the Find a Rinnai PRO page on our website to find a qualified technician near you to install your water heater.It is not recommended to install a water heater without a master
  • Find your Rinnai Check out our product guides, manuals, energy guides, warranty information, videos and charts to find the perfect instant water heater for your home. Check our groundwater temperature chart to see if this heater is right for your area.

Rinnai Condensed Natural Gas Water Heater RL94iN Indoor Installation Up to 9.8gpm

professional B005NM3K2K
/10Our Score
Key Features
  • Original Design With Circ-Logic’s instant water heating technology, we propose a circulation model that fits your habits. Check out the new RE180iN for the latest in condensation-free technology that speeds up maintenance and installation.
  • A compact instant gas water heater that never runs out of hot water. Rinnai’s non-condensing instant water heaters are about the size of a small suitcase and fit in a variety of spaces while delivering up to 9.8 GPM (6 units simultaneously).
  • Smart and reliable design. Includes 12-, 5-, and 1-year residential warranties and 5-, 5-, and 1-year commercial warranties on heat exchangers, labor and parts. See controller module for WiFi control (sold separately)
  • Professional installation recommended. Visit the Find a Rinnai PRO page on our website to find a qualified technician near you to install your water heater.It is not recommended to install a water heater without a master
  • Find your Rinnai Check out our product guides, manuals, energy guides, warranty information, videos and charts to find the perfect instant water heater for your home. Check our groundwater temperature chart to see if this heater is right for your area.

Airthereal 18KW 240V Electric Instant Water Heater – Infinite Hot Water On Demand – Self Regulating And Saves Energy – Small Enough To Fit Anywhere – 2 Shower Evening Range

multi purpose tankless water heater
/10Our Score
Key Features
  • ☼ Infinite hot water. Imagine being the last family member to shower before going out. When you turn on the faucet, the water turns into ice. It’s a shame we don’t have an Airthereal electric instant water heater that can provide an unlimited supply of hot water when you need it, without preheating, temperature fluctuations or running out of hot water in the tank.
  • ☼ Save space. Water heaters in basements and utility rooms take up a lot of space. This wall mounted water heater takes up 90% less space than a traditional water heater.
  • ☼ Energy saving – water is heated only when needed, instead of being stored in a hot water tank. Auto-climate technology uses energy only to heat the water during use, saving up to 50% on hot water costs compared to traditional tank water heaters.
  • ☼ Important notice. 18kW electric water heater installation requires a 240V, 2 x 40A circuit breaker and a set of 2 wires (8AWG/2). Make sure your panels meet these specifications.
  • ☼ Safety in use. Equipped with high temperature protection, dry heating protection, and earth leakage protection, you can rest assured that you will have safe, on-demand hot water on a regular basis. The electrical and hydraulic systems are completely separated to prevent power leaks and water pipe corrosion.

Ream RTEX-24 24kW 240V Electric Instant Water Heater Gray

heavy duty
/10Our Score
Key Features
  • ON/OFF rotary control with adjustable digital temperature display
  • Self-modulating power control
  • 24 kW model consumption – 5.9 gpm max for RTEX-24
  • Bottom water connection 3/4 NPT
  • Stable and continuous supply of hot water when needed

EcoSmart ECO 8 Instantaneous Water Heater Electric 8kW – Qty 1, 12 x 8 x 4

#$#$ tankless water heater #$$#
7.3/10Our Score
Key Features
  • Product is very durable
  • Product is easy to use
  • made in china
  • The heating elements are durable and screw-on for easy replacement.
  • Activation Flow – 0.3 GPM

DAORDAER 3000W 110V Mini Electric Instantaneous Water Heater Constant Temperature Water Heater with Digital Remote Control Display.

the best DAORDAER 3000W 110V Mini Electric Instant Water Heater Constant Temperature Instant Water… quality price 2023 in usa
7.4/10Our Score
Key Features
  • Fast Hot Water Heater – Electric instant water heater with 5500W heating system provides instant hot water in 3 seconds to get hot water without preheating. Instant, constant, infinite hot water with maximum temperature up to 55℃/131℉. The ideal washbasin for perfect comfort and relaxation.
  • Remote control or touch screen – Ultra slim and elegant appearance, beautiful and elegant. The temperature can be adjusted by remote control and touch control, which is more convenient to use, avoids wet hands during adjustment, and is safer.Constant outlet water temperature, 3 levels of power adjustment, goodbye to cold and heat
  • Save space and energy. Our instant water heater has a compact design, about the size of a small suitcase. Wall mounting frees up valuable space in your home. Also, electric water heaters without instant water heaters use heat energy 99% efficiently. Heats water only when needed, unlike tank heaters that maintain water temperature even when not in use.
  • EASY TO INSTALL – The home water heater has a mini body and can be easily installed in the bathroom, kitchen or under the sink. A standard 1/2 interface (inlet or outlet) can be connected directly to a domestic hose connector.
  • Safe to Use – With high temperature protection, air heat protection, and earth leakage protection, you can rest easy knowing that safe hot water will be there when you need it, and on time. The electrical and hydraulic systems are completely separated to prevent power leaks and water pipe corrosion.

Ecosmart POU 3.5 point-of-use electric instant water heater,

good comparison Ecosmart POU 3.5 point-of-use electric instant water heater, and 2023 reviews
7.4/10Our Score
Key Features
  • In warm climates, the sink can be supplied with hot water at 0.5 GPM.
  • You will need a 30 amp circuit breaker and 10 AWG wire.
  • POU 6 is recommended for one wash at 0.5 GPM in cold weather.
  • The current current is 29 amps. kW to 3.5 kW
  • Connection fitting 1/2NPT

Residential Instantaneous Water Heater Rheem 240V RTEX-13, Gray

opinion Residential Instantaneous Water Heater Rheem 240V RTEX-13, Gray professional for the home
7.2/10Our Score
Key Features
  • External adjustable digital thermostat with LED display (accuracy +/-1 degree).
  • Robust copper immersion heater with two heating elements and field serviceable.Self-adjusting power control
  • EASY TO INSTALL – 1/2 NPT adapter included. 1/2″ side pressurized water connection
  • 99.8% energy efficiency. External controls allow temperature adjustments in 1°F increments. Water saving shower head – 1.5 gpm
  • Easy thread replacement, easy installation, 54A digital temperature display, 13kW model. Flow rate – up to 3.17 gpm

Ecosmart ECO 24 electric instant water heater 24 kW, 240 V, patented self-regulating technology, 17 x 17 x 3.5

buy Ecosmart ECO 24 24 kW, 240 V Patented self-regulating electric instant water heater… good and cheap
7.1/10Our Score
Key Features
  • lifetime warranty
  • Save up to 60% on your hot water costs with an ECOSMART electric instant water heater.
  • Never run out of water with the ECOSMART instant water heater
  • Patented self-modulation technology and design. 0.3 gpm activation flow
  • The ECOSMART instant water heater is 99.8% energy efficient.

How to Buy tankless water heater: A Step-by-Step Guide

Streamline Your Shopping with Our tankless water heater Buying Guide

Are you exhausted from spending numerous hours looking for an ideal product that fits both your needs and budget? Do you find the alternatives confusing and confusing? If so, rest assured! Numerous individuals face the same problems when it comes to buying a tankless water heater. Fortunately, an extensively researched and comprehensive buying guide can assist you in making a knowledgeable choice that saves you hours and dollars in the long run.

  • Identify Your Needs When Shopping

    By taking the time to determine your needs before purchasing, you can make a wise informed choice. This process prevents you sidestep any frustration with purchasing something that won’t meet your expectations, leading to an even more fulfilling overall rewarding purchase.

  • Research the product

    Conducting research an item’s background before purchasing can help you reveal its environmental impact. By looking into the components, manufacturing processes, and disposal methods, you can make a more informed decision that aligns with your beliefs and promotes sustainable consumption habits. This awareness helps promote a greener lifestyle and helps minimize your ecological footprint.

  • Brand Reputation Matters

    Brand reputation is a key indicator of a brand’s dedication to its clients and the excellence of its goods. By considering this factor before purchasing, you can be assured that you’re opting for a tankless water heater that has been crafted with attention and attention to detail, resulting in a better user experience.

  • Balance of quality and price

    By placing importance on getting the best return on your investment when making purchases, you can avoid the adverse effects of consumerism. By being mindful of an item’s true worth, you can refrain from succumbing to accumulating unnecessary possessions and instead focus on quality rather than quantity. This approach can result in a more streamlined and satisfying lifestyle that prioritizes the things that are truly important.

  • Set a Budget and Stick to It

    Determining a budget is crucial because it can assist you stay within your financial means and prevent overspending. By establishing how much you can afford to spend on a particular tankless water heater, you can narrow down your options and prioritize those that fit within your budget. This can assist you make a more informed conclusion and steer clear of impulse buying or overspending on unnecessary features or functionality. Additionally, setting a budget can also help you prioritize your needs and preferences, guaranteeing that you get great value for your money.

  • Trustworthy Sellers

    By making a choice from a vendor with a excellent track record, you’re safeguarding your investment with a solid warranty and refund policy. In the case of any concerns, these sellers can help you manage the process with simplicity, guaranteeing that your needs are met and your contentment is their top priority.

  • Check for warranty

    By assessing a refund and return policy, you can steer clear of potential letdown and annoyance. If a tankless water heater doesn’t live up to its promises or fails to perform as expected, a thorough policy will allow you to resolve the situation without incurring additional costs or wasting valuable time.

  • Customer Feedback Matters

    Checking out customer reviews before buying is like having a personal shopping assistant. These reviews offer valuable insights into the tankless water heater’s performance, quality, and overall satisfaction from real users. By evaluating their experiences, you can make a more knowledgeable decision and avoid potential disappointments.

  • Look for Promotional Discounts and Deals

    Making it a priority to the hunt for promotions and deals before buying can be helpful because they can give you more value for your money. By taking advantage of promotions, you can obtain the same tankless water heater for a lower price, allowing you to stretch your budget and potentially purchase additional items. Furthermore, promotions and deals can also help you try out new products that you might not have considered otherwise, broadening the selection of options available to you.

  • After-Sale Service and Customer Support for No More Headaches

    It’s essential to assess the post-purchase service and customer assistance since they can supply you with reassurance and support in case you encounter any issues with the tankless water heater after the purchase. By making sure that the seller offers dependable post-purchase service and customer assistance, you can have obtain access to help and guidance in case you need help with installation, maintenance tasks, or repairs. Additionally, a seller with good post-purchase service and customer assistance can also provide you with a improved overall buying experience, and help you feel more assured and satisfied with your buying decision.

  • Warranty and Guarantee Policies

    Guarantee policies are your insurance against unexpected tankless water heater issues. By checking these policies before buying, you guarantee that you’re protected in case of any faults or malfunctions, making your purchase more protected and worry-free.

Delving Deep: Exploring Our Meticulous Testing Methods

At [ST], our mission is to provide you with reliable and trustworthy tankless water heater recommendations, ensuring that you can make well-informed decisions when purchasing items for your everyday needs. Our rigorous testing and review process is designed to assist you save time, money, and effort by finding the superior choice available for purchase within the United States. In this article, we will outline how our team follows to test and find the superior from hundreds of options.

  1. Extensive Market Research: Our team begins by performing extensive market research to identify the top tankless water heater in each specific area. We examine customer reviews, opinions of experts, and industry trends to create a list of highly promising and popular tankless water heater.
  2. Hands-on Testing: After we have identified the leading candidates, our team of experienced reviewers and subject matter experts acquire and evaluate each tankless water heater in actual everyday scenarios. We evaluate factors such as functionality, longevity, user-friendliness, and overall value for money. Our hands-on testing process ensures that we can provide you with accurate and unbiased information about the strengths and weaknesses of each product.
  3. Comparative Analysis: After completing our hands-on testing, we compare the products against each other, taking into account factors such as price, features, and customer feedback. By conducting a detailed comparison, we evaluate the tankless water heater based on factors like price, features, and customer feedback, leading to evaluations and identification of the prime options appropriate for various needs and budgets.
  4. Expert Consultation: To ensure that our recommendations are accurate and up-to-date, we consult with industry experts and professionals in the relevant fields. The insights we gather help us to enhance our assessments and provide you with the most reliable and trustworthy information possible. These consultations, we seek advice from expert experts to guarantee the accuracy and up-to-dateness of our recommendations, allowing us to provide trustworthy information to you.
  5. Continuous Updates: The market’s dynamic nature, we actively keep tabs on product launches and updates, making sure our evaluations are always informed by the latest and accurate data.
  6. Transparency and Disclosure: We emphasize total openness and disclosure, which is why we explicitly mention potential conflicts that may arise and elaborate on the way our review process works. We also offer detailed information about our testing methods and criteria, so you can comprehend exactly how we arrived at our conclusions.
  7. Reader Feedback: We value your feedback and take it into account when revising our recommendations. If you have any questions, worries, or ideas, please don’t hesitate to reach out to us. Your input helps us to constantly enhance our review process and provide you with the most precise information regarding tankless water heater.

By following these methods and processes, our team at [DN] is committed to providing you with the most reliable and trustworthy recommendations. We comprehend that your confidence is essential, and we work tirelessly to guarantee that our reviews are accurate, unbiased, and helpful. Our goal is to help you make a knowledgeable decision and discover excellent offers for your needs, so you can have peace of mind being confident that you have chosen wisely.

Our Verdict

If you’re in the market for a top-notch tankless water heater, look no further than our two top choices: EcoSmart ECO 11 electric instant water heater, 13 kW at 240 V, with patented self-regulating function… and EcoSmart ECO 27 Instantaneous Water Heater Electric 27kW – Qty 1, 17 x 17 x 3.5. Both options offer excellent performance and durability, and we are confident they’re the top on the market. We hope you appreciate using either of these as much as we did!