The Best Home Tankless Water Heater For 2023

Summary
1. Best Overall: EcoSmart ECO 18 Electric Tankless Water Heater
EcoSmart ECO 18 Electric Tankless Water Heater offers residential homeowners the best of both worlds with a highly durable and self-modulating system. Save energy, power your water heater with solar panels, or just use the waste heat from your shower. Our EcoSmart ECO 18 Electric Tankless Water Heater features an energy efficient design that can save up heating costs. Read Review
2. Best Bang For The Buck: Rinnai V94iP Non-Condensing Propane Tankless Water Heater
Rinnai V94iP Non-Condensing Propane Tankless Water Heater is the ultimate in energy efficiency, delivering unmatched performance and outstanding value. This stylish and compact design fits under any sink and delivers hot water on demand without running out. It is also Rinnai’s first to include enhanced scale detection technology to prevent scale build up. Read Review
3. Best Realiable: Stiebel Eltron Tankless Water Heater
Stiebel Eltron Tankless Water Heaters are the most energy efficient and eco-friendly water heating systems available. They deliver continuous flow of hot water, with no storage tanks and save space by eliminating all storage tanks, pumps and pipes. With a high level of efficiency, our tankless water heater is an excellent choice for any home or business environment. Read Review
4. Best Style: Rinnai RL94eN Non-Condensing Propane Tankless Water Heater
The Rinnai RL94eN Non-Condensing Propane Tankless Water Heater is the original design, never run out of hot water, compact propane water heater. With its smart and durable design, this morden technology propane water heater speeds up service and installation. Read Review
5. Best Design: Rheem RTEX-24 Electric Tankless Water Heater
Switch over to the Rheem RTEX-24 Electric Tankless Water Heater with digital temperature control and power modulating control, saving energy and giving you a sleek new look in your kitchen. With a modern design and a self-modulating power control, this powerful little heater is easy to set up. Read Review
Installing a tankless water heater can be an excellent way to cut your monthly water bill and conserve natural resources. These water heaters are efficient and do not waste any hot water by re-using it. They also reduce the amount of time it takes to fill your sink or bath, which means that you can spend less time waiting for hot water.
However, there are some things you should know before purchasing one. Understanding how these systems work will help you make the right decision. The best home tankless water heater is one that offers greater savings than other similar systems but at a reasonable price and without sacrificing quality. To find the best option for your household, check out our recommendations below.
Our experts have determined the models that would be the greatest fit for your requirements, specifically EcoSmart ECO 18 Electric Tankless Water Heater, after doing extensive study and analysis over a considerable time. Consider Rinnai V94iP Non-Condensing Propane Tankless Water Heater as an alternative if you're still undecided. Other suggestions on this list are definitely worth considering, and we've put up a useful shopping guide to help you decide!
Our Top Picks

- Save up to 12 cubic feet of storage space.
- Save up to 60% on your water heating costs with the most advanced, self modulating technology available
- Never run out of hot water with an ECOSMART tankless water heater.
- Manufactured in China
- The product is easy to use
- Digital temperature control in 1-degree increments gives users complete control of hot water
- Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
- Lifetime warranty for residential use
- 75 A
- The product is highly durable
- Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE199iP model
- Never Run Out of Hot Water with this Compact Propane 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 9.8 GPM (6 fixtures at once)
- Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
- 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
- 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
- SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation
- TEMPRA 24 TREND – This specific model is 24kW, 240V, requires a min recommended electric service of 150 A, and offers an output water temperature of 68° to 140°F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
- WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase
- CONTINOUS FLOW – Hot showers will never be interrupted again. Enjoy continuous, on-demand hot water with an unlimited supply, when you want it without wasting any energy when not needed
- SILENT OPERATION – One electronic switch will activate the hot water heater and it’s noise free while in use. Digital temperature display is easy to read, while the interior solid copper heating system does all the power work

- 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
- Never Run Out of Hot Water with this Compact Propane 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 9.8 GPM (6 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)
- 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 RE180eP model
- 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

- Bottom 3/4" NPT water connections
- ON/OFF Dial Control with adjustable digital temperature display
- 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
- Self-modulating power control
- On demand, consistent and continuous hot water

- Easy Installation -The propane water heater uses standard 1/2" NPT water fitting and gas inlet. Comes with 2" horizontal vent pipe,ensures efficient power ventilation. Minimum activation rate: 0.65 GPM; Maximum input rating: 68,000 BTU; Water connection location/size: Bottom/0.5-inch NPT. You will need a gas regulator ( Camplux model KR-106A )&1 pc 5/8" NPT male to 1/2" BSP female gas connector adapter if you want to hook this water heater up to a propane tank.
- On-Demand Tankless Water Heater-Camplux high efficiency 2.64 GPM propane gas tankless water heater delivers 2.64 gallons per minute of on-demand endless hot water ensures instant hot water for any small homes, cabins or apartments.
- Safety Features-Flame-out protection, anti-freezing protection(manual drainage needed),over-heating protection, air flow pressure switch protection to ensure the safety. Safe electronic ignition system, plugs into standard 120V electrical outlet with UL-listed cord.
- Compact Design,Saving Energy-The compact size - 12.8"(L)*5.91"(W)*20.28"(H) tankless water heater saves more space than traditional tanks.Trendy and modern design with fahrenheit digital temperature display.Eco and Full gas switch for energy saving and get ideal hot water temperature.
- Considerate Customer Service- Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
- Instant Heating: Equipped with Circ-Logic - Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
- Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
- Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream
- Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
- Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
- On-Demand Tankless Water Heater-Camplux advanced 5.28 GPM high efficiency flow control propane gas tankless water heater delivers 5.28 gallons per minute of on-demand endless hot water to suit medium- and smaller-sized homes. Automatically activates on water pressure between 7.0-150 PSI.
- Constant & Sustainable Hot Water Solution - CSA certified balanced combustion design,features with over-high wind pressure safety protection,Ipx4 water resistant protection, over-loaded electric protection,fan failure protection, equipped with PCB start up self-test & real-time intelligent monitoring, timely warning of potential gas fire and hydro power to ensure your family's safety.
- High Thermal Efficiency & High-Rise Wind Resistance-Phosphorus deoxidized copper heat exchanger with high temperature and corrosion resistance technology for full combustion and high thermal efficiency up to 92% . It can resist grade 8 wind speed and 240Pa high anti-wind pressure. Additionally, a wind pressure sensor is added to perceive the external wind force in real time and automatically adjust the fan, flame and maintain stable combustion.
- Affordable & Efficient Savings - PCB frequency conversion intelligent control, temperature intelligent adjustment, environmental protection and durability, truly outstanding energy saving. Man-machine dialogue, heating without waiting. This residential constant model saves time, money and energy while producing safe, endless hot water for whole home at an affordable rate.
- Considerate Customer Service -Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
- Tankless Gas Water Heaters are cost saving and energy efficient
- Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
- Continuous Hot Water – never run out of hot water, even with back-to-back showers
- Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
- For indoor use only

- ENERGY EFFICIENT - Conserves energy and water by only using energy when hot water is in use, saving you money
- UNLIMITED HOT WATER ON DEMAND - Tankless electric water heater provides instant, continuous water flow
- PERFORMANCE UP TO 5.3 GALLONS PER MINUTE (GPM) - Enough to run 4 faucets and 2 showers simultaneously in warm climates (*Results are based on 72˚F inlet water temperature and 105˚F outlet water temperature)
- WHOLE HOME SOLUTION - Easily provides enough hot water for a house or apartment
- INTUITIVE INTERFACE AND SPACE SAVING DESIGN - Adjust temperature and settings with easy-use touch screen on a compact unit that takes up significantly less space than a tank style water heater
What to Look For in a best home tankless water heater?
When selecting a suitable best home tankless water heater, a variety of factors have been found. Information sources are available in a wide range of forms. As a basis, we are doing it to support, inform, and solve your demands.
Please keep these things in mind before selecting the best home tankless water heater:
Venting Needs
Gas Or Electric
Efficiency Rating
The difference between electricity and gas rates means that this rating doesn't give a good indication of the cost you could expect to pay for the unit. A gas heater with a lower efficiency rating will be more efficient than one that uses electricity. However, gas heaters are mucher than electric ones.
Because they don't have to run constantly to heat water, tankless heaters are significantlyer than storage tanks heaters. A tankless water heater can cut down on your energy bills by up to 40% depending on how much hot water you use. To determine the impact on your budget, it is better to calculate the annual operating cost for the hot water heater.
Anti-Scale Devices
Brass Vs. Plastic Drain Valves
Tankless Or Tank
Tank Capacity
Digital Displays
Space
FAQs
What Is The Best Compact Water Heater For Saving Space?
Mini-tank or tankless water heaters are compact and light, which makes them great for small homes that have less space.
How Often Should I Replace My Water Heater?
According to professionals, your water heater should be replaced every 10 years. A water heater cannot be guaranteed for this long. It is possible that your water heater will need to be replaced sooner than expected.
How Do Water Heaters Work?
A tank-style water heater uses a dip tube that has an outlet in the bottom to heat the cold water. The tank's temperature is monitored by an internal thermostat which activates either a heating element, or a burner that warms water to the desired temperature.
Dual heating elements are used in electric water heaters to heat the water. The bottom heating element heats the coldest water faster, while the top one warms the water if it becomes too hot.
A pilot light, or electronic ignition system for gas water heaters ignites the gas that is flowing to a burner. Before shutting off, the burner heats water in the tank until it reaches a desired temperature. The exhaust is then vented outside.
Water heaters that are tankless don't keep water. They heat the water by using either electric or gas heating elements. The temperature of the hot water is a factor in how fast it flows, however most units are capable of providing hot water at a flow rate between 2 and 7 GPM.
What Is A Water Heater?
A boiler is often confused with a water heater. What is the difference between a boiler and a water heater? A water heater heats water to be used for showering, cooking, cleaning, or other purposes. The water heater heats cold water coming from the water supply pipe. It then gives you hot water ready to use for washing your clothes or running a faucet. Water heaters use water that's suitable for cleaning and cooking (potable). A boiler, on the other hand is designed to heat your home and heat water from the taps.
Can You Still Shower If Your Water Heater Is Leaking?
You can still take a hot shower even if your water heater is leaking. You can shower even if the leak becomes severe. It will just mean that you won't get hot water.
Can Water Heaters Explode?
Electric and gas hot water heaters are susceptible to explosions. Explosions are rare, but can be caused by increased pressure in the heater, poor installation or maintenance, failure to set the temperature and relief valve (T & P), gas heaters, flammable liquids, or gas leaks.
How Do You Drain A Water Heater?
First, drain the hot water heater by flushing it with water at full pressure. After connecting the drain line, open the drain valve and close it again. The valve will dislodge any sediment, allowing the system to drain faster.
Then, disconnect your water heater from either the electric or gas power supply and shut down the main water supply. Next, disconnect the drain hose from the quick flush and open the drain valve. Once you let air in the tank, water will not flow out. You will need to remove the hot water pipe from the top of the water heater, and then move the pipe to the side. You will see the tank begin to drain.
How Long Does A Water Heater Last?
Although water heaters come with varying lifespan expectations, many can last for between 8-12 years. Some water heaters can last up to 20 years. Your water quality can make a difference in how long your heater will last. Over time, corrosion can occur from heavy minerals or sediment.
Depending on which model you select, the manufacturer may offer different warranty terms. The most common warranty period is usually between 6 and 9 years.
Gas Vs Electric Water Heaters: Which Is Right For You?
It's not cheap to install a water heater in your house. This is why it's important that you take some time thinking about how to charge your appliances. First, electric heaters offer the most sustainable option for the environment. If you choose one, it will be a better choice for your planet. Although electric water heaters work better, the price of electricity is higher than that of traditional gas options. You can still use your gas heater even if there is no power, so you have less to worry about during a crisis.
What Are The Signs Your Hot Water Heater Is Going Out?
A failing water heater can be identified by a series of telltale symptoms, such as banging sounds inside the tank and a decrease in temperature.
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