It can be difficult to buy a best tankless water heater online without feeling anxious. There are a lot of things to consider before finalizing your purchase. For example, you might worry about how the product will arrive or if it’s good enough for your needs. It’s also hard to know if the company is reliable. To help you feel more confident in your purchases, we’ve made a list of top 10 best tankless water heater for our readers.
Review of Best Tankless Water Heater
Top Pick
1. Airthereal Electric Tankless Water Heater 18kW, 240Volts – Endless On-Demand …
- Brand: AIRTHEREAL
- Manufacturer: Airthereal
- Color: Black
- Dimensions: Height: 3.43 Inches Width: 12.22 Inches Length: 17.25 Inches
Features
- ☼ Endless Hot Water: Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you don’t have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.
- ☼ Save Space: That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.
- ☼ Save Energy: Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating energy compared to a typical tank water heater.
- ☼ Important Note: In order to install 18kW Electric Tankless Water Heater it requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x (8AWG/2) wires. Please check to confirm that your breaker panel meet these specifications.
- ☼ 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.
Best Quality
2. Electric Tankless ECOTOUCH 18kW on Demand Instant Hot Water Heater …
- Brand: ECOTOUCH
- Manufacturer: ECOTOUCH
- Color: Black
- Dimensions: Height: 17.25 Inches Width: 4.02 Inches Length: 12.22 Inches
Features
- 【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.
Recommended
3. Camplux 5L Outdoor Portable Water Heater, 1.32 GPM Tankless Propane …
- Brand: CAMPLUX ENJOY OUTDOOR LIFE
- Manufacturer: CAMPLUX
- Color: White
- Dimensions: Height: 14.8 Inches Width: 4.33 Inches Length: 11.42 Inches Weight: 10.0 Pounds `
Features
- CSA Safety Standard -CSA safety standard approved portable tankless water heater,flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.0-110 PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. The water heater will shut off automatically when high water temperature protection over 176 °F.
- Lightweight Portable Design-Compact size weights 10 lbs with portable handle for easily carry. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a 15 minutes to install the propane water heater.
- Instant Hot Water- Maximum power output 28,000btu/hour, you can get 1.32 gallons instant endless hot water easily wherever you are. No need to preheat before operating the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
- 3.0 PSI Water Pressure Startup -Equipped with a magnetic water flow sensor, the tankless water heater can be widely applied for rural areas, RV’s and Boats.The tankless propane water heater lights when water pressure between 3.0-110 PSI, low water pressure is perfect for campings and remote cabins.
- Important Tips -To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. The tankless water heater will “caught on fire “with improper operation. Always check gas leakage before operation.
4. DAORDAER Mini Electric Tankless Water Heater 3000W 110V Constant Temperature …
- Brand: DAORDAER
- Manufacturer: LQWY
- Color: 110V/3000W – WHITE(with plug)
- Dimensions: Height: 3.543307083 Inches Width: 0.98425 Inches Length: 10.236220462 Inches
Features
- 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.
5. Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping …
- Brand: CAMPLUX ENJOY OUTDOOR LIFE
- Manufacturer: CAMPLUX
- Color: White
- Dimensions: Height: 4.33 Inches Width: 11.42 Inches Length: 14.8 Inches Weight: 10.0 Pounds `
Features
- Lightweight, Compact & Portable Design: The 10 pounds lightweight portable water heater’s folding handle keeps it out of the way and enables easy setup outside.
- Flow Rate & Temperature Specification: The temperature raise is 114.8℉ (46℃) at its highest point and 46.4℉ (8℃) is at its lowest point of 1.32 GPM. Also, 1.32 gallons of hot water can be produced per minute at the flow rate of 1.32 GPM.
- Versatile Applications: The lowest water pressure at beginning for the water heater is 3.0 PSI. For off-grid and rural areas, this hot water generator powered by two size D batteries is ideal. No more chilly outdoor shower anymore.
- 6-in-1 Protection & CSA Safety Approved: This tankless water heater is CSA Approved with anti-freezing protection, over-heating protection, low water flow protection, dry combustion protection, high water pressure protection and flame failure device.
- Installation Instruction & Package Content: This Camplux AY132 heater comes with 1-year guarantee, 5 feet premium on/off shower head, 5 feet gas regulator, 1 set US-standard garden hose, and 1 installation hardware pack. Setting up this propane water heater simply takes 10 minutes.
- Important Installation Tip: To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Read the directions before installation check for gas leaks at all times before operating.
- Warm Maintenance Tips: Damage caused by freezing is not covered under Camplux warranty. It must be properly drained if the water heater stored in cold climate, Freeze damage can occur in the heat exchanger or water valves. To drain the device properly, please open the drain stern located at the bottom right of the water heater . You can do so by turning in a counter clockwise direction. Please disconnect all incoming and outgoing water lines to ensure proper drainage from the water heater. When not in use, fully disconnect gas, incoming and outgoing waterlines. Store in a warm dray place.
6. Airthereal Electric Tankless Water Heater, 27kW, 240Volts – Endless On-Demand …
- Brand: AIRTHEREAL
- Manufacturer: Airthereal
- Color: Black
- Dimensions: Height: 12.2 Inches Width: 3.43 Inches Length: 17.25 Inches Weight: 19.0 Pounds `
Features
- ☼Endless Hot Water: Imagine being the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. With the Airthereal Electric Tankless Water Heater, you’ll have endless hot water on demand with no preheating required. No more worrying about running out of hot water in the tank or experiencing temperature fluctuations in the middle of your shower.
- ☼Save Space: This wall-mounted water heater is perfect for saving space. It uses 90% less space than a traditional hot water heater with a tank, which means you can use the extra space for other things.
- ☼Save Energy: The self-modulating temperature technology only heats up water when you need it, which means you won’t be wasting energy by storing hot water in a tank. You can save up to 50% on water heating energy compared to a typical tank water heater.
- ☼Safe To Use: Safety is always a top priority with Airthereal. With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion.
- ☼Important Note: In order to install the 27kW Electric Tankless Water Heater you’ll need access to 240 voltage, 3 x 40 amp circuit breakers, and 3x 8AWG/2 wires. Please make sure to check your breaker panel to confirm that it meets these specifications before installing.
7. Airthereal Electric Tankless Water Heater, 8kW, 240 Volts – Endless …
- Brand: AIRTHEREAL
- Manufacturer: Airthereal
- Color: Black
- Dimensions: Height: 2.55 Inches Width: 8.04 Inches Length: 13.08 Inches Weight: 8.2 Pounds `
Features
- ☼ Instant Hot Water: The 8kW electric tankless water heater supplies instant & endless hot water of 108℉ or higher with no waiting for preheating or temperature fluctuations. perfect companion for faucet and sinks, bringing you perfect experience of comfort and relaxing.
- ☼ Save Energy: Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating energy compared to a typical tank water heater.
- ☼ Save Space: A traditional water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a hot water heater with a tank. Compared to our next-largest 9kW water heater, this 8kW unit is 30% smaller with only 3,412 BTUs.
- ☼ Important Note: In order to install 8kW Electric Tankless Water Heater, it will require a 240 Voltage, 40 AMP circuit breaker. Please check to confirm that your breaker panel meets these specifications before purchasing.
- ☼ Safe To Use: With high temp protection, dry heating protection, and electrical leakage protection you can rest easy 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.
8. Rinnai RSC199iN Smart-Circ Condensing Gas Tankless Water Heater, Super High …
- Brand: Rinnai
- Manufacturer: Rinnai
- Color: Gray
- Dimensions: Height: 14.37 Inches Width: 21.26 Inches Length: 33.86 Inches Weight: 79.0 Pounds `
Features
- Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience
- Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once)
- Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces; Includes 15-, 5-, and 1-year residential guarantee 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
9. Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
- Brand: Rheem
- Manufacturer: Rheem
- Color: Gray
- Dimensions: Height: 3.63 Inches Width: 8.25 Inches Length: 12.63 Inches Weight: 0.000625 Pounds `
Features
- 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
10. Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
- Brand: Rheem
- Manufacturer: Rheem
- Color: Gray
- Dimensions: Height: 3.5 Inches Width: 14.5 Inches Length: 18.25 Inches Weight: 17.8 Pounds `
Features
- ON/OFF Dial Control with adjustable digital temperature display
- Self-modulating power control
- 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
- Bottom 3/4″ NPT water connections
- On demand, consistent and continuous hot water
Benefits of buying the best tankless water heater at Amazon
We all know that the products sold on Amazon are cheaper than other places. Amazon has a huge number of items to choose from. This means that it can be hard to decide which product you want, so we have come up with some benefits of buying best tankless water heater at amazon.
Supper Fast Delivery
When I need anything to buy online, I remind the name of Amazon. They are known for their fast shipping, vast selection, and price transparency. The company has also been a pioneer in automated technologies like smart warehouses and drones. These two factors contribute to Amazon’s ability to deliver products faster than other e-commerce websites. Here is how you can take advantage of this service by ensuring you have the right packaging materials in place before shipping your products to Amazon.
The Best Customer Support.
Amazon’s helpdesk is second to none in the eCommerce industry. The company offers excellent customer support and responds to queries within a few hours. Customer service representatives are always available, even on weekends and public holidays. Furthermore, Amazon offers 24/7 live chat through the website, which allows customers to speak with an agent whenever they need assistance.
Final Words
When it comes to shopping online, Amazon is the best place to buy products. Not only does it offer faster delivery and a great customer support, but also offers some of the best prices on certain products. If you’re looking for a product that’s not on our list, or if you have any questions about buying something online, just let us know in the comments below! We are here to help you.