The Best Rated Tankless Hot Water Heater For 2023

Mark Bailey By, Mark Bailey
Updated
Rinnai V65eN Non-Condensing Natural Gas Tankless Water Heater
Image credit: Amazon.com

Summary

1. Best Overall: Rinnai V65eN Non-Condensing Natural Gas Tankless Water Heater

The Rinnai V65eN is a non-condensing natural gas tankless water heater with a compact design, which provides continuous hot water from just one point in the house. One of the best features of this gas water heater is that it automatically learns your habits, to determine how much hot water you need during each time period. The smart, durable design provides professional installation and peace of mind by conserving energy and reducing greenhouse gas emissions. Read Review

2. Best Bang For The Buck: Stiebel Eltron Tankless Water Heater

Stiebel Eltrone Tankless Water Heater is easy to install and maintain. With Continuous Flow, Space & Energy Saver, this eco-friendly unit saves energy while saving you money. It's a perfect fit for any home and makes it easy to maintain efficiency and cost savings without sacrificing any of the comfort your family expects from great hot water. Read Review

3. Best Compact: Bosch Electric Mini-Tank Water Heater Tronic

The Bosch Electric Mini-Tank Water Heater is a compact, lightweight, and stylish design. It provides hot water quickly at point of use and boasts Thick CFC-free foam insulation for maximum energy efficiency. With its glass-lined tank for durability and sleek design, this is one water heater that will blend seamlessly with your decor. Read Review

4. Best Smart: EcoSmart ECO 11 Electric Tankless Water Heater

Save time and save space with the EcoSmart ECO 11 Electric Tankless Water Heater. This tankless hot water heater provides endless on demand hot water, saving you from the worry of running out. It features advanced self-modulating technology that only uses the amount of energy required to heat water when it is needed, so it does not waste energy if not in use. Read Review

5. Best Realiable: Eemax EEM24018 Electric Tankless Water Heater

Eemax EEM24018 Electric Tankless Water Heater offers a continuous supply of hot water with no wait time and no risk of over-heating. With its own self-modulating technology, the tankless water heater also provides energy savings by automatically adjusting the temperature based on usage. The compact size of this electric gas-fired water heater saves valuable storage space while digital temperature control ensures you get the perfect temperature every time. Read Review

Installing a tankless hot water heater in your home can be one of the best upgrades you can make for your plumbing system. It’s also one of the most challenging, as there are many options available and not all of them will work with your existing plumbing. That’s why it’s important to do your research before purchasing one.

One of the best ways to do so is by reading reviews from other people who have already installed one in their home and are happy with how it turned out. We’ve compiled a list of the top rated tankless hot water heater models that should be at the top of your list when looking for new hot water heater.

After 14 hours of product research and analysis, We are able to identify the best rated tankless hot water heater is Rinnai V65eN Non-Condensing Natural Gas Tankless Water Heater. The performance of this product is of an excellent standard, and it offers a complete set of features that can satisfy your requirements.

Our Top Picks

  • 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 RE160eN 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
  • 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 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 6.5 GPM (5 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)
TOP Choice #2 Stiebel Eltron Tankless Water Heater
Our Score:
9.7
Stiebel Eltron
  • 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
  • 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 and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
  • EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
  • CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
  • TEMPRA 24 PLUS – 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
TOP Choice #3 Bosch Electric Mini-Tank Water Heater Tronic
Our Score:
9.6
Bosch Thermotechnology
  • 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
  • INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
  • 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)
  • 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)
  • 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
  • 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
  • Compact size saves valuable storage space; Resistant and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F
  • Before purchase and installation, Please verify that this EEM24018 is the correct size for your hot water needs.Rated Pressure: 25psi minimum; 150psi maximum
  • Tankless water heaters provide a continuous Supply of hot water and only heats the water you need, when you need it
  • Instant, consistent and endless hot water
  • The most advanced, self-modulating technology available, meaning the unit will adjust how much energy needs to be input based on how much hot water is needed
6 CAMPLUX ENJOY OUTDOOR LIFE Tankless Water Heater
Our Score:
9.3
CAMPLUX ENJOY OUTDOOR LIFE
  • 3 Simultaneous Applications In Winter.Camplux advanced 6.86 GPM high capacity flow control propane gas tankless water heater delivers 6.86 gallons per minute of on-demand endless hot water ensures instant hot water for 3-4 persons whole home shower and kitchen at one time.
  • Considerate Anti-Scalding Protection-The tankless water heater equipped with anti-scalding function to avoid the problem of excessively high setting temperature (causing burns ) caused by children's wrong operation.Therefore, it is impossible to set a temperature exceeding 122 ℉ under normal working conditions. The water valve needs to be closed to make the water heater in standby status before you set the temperature above 122 ℉.
  • Low Nitrogen Combustion,Energy Saving. The tankless gas water heater comes with low nitrogen balanced combustion design, v-type stainless steel burner,high heating efficiency up to 89.98 %. The water heater uniform energy efficiency range 0.89-0.92.
  • Direct-Current Frequency Conversion Fan-The propane gas water heater comes with a direct-current frequency conversion fan. The water heater can resist level 8 strong wind and you no need to worry about the water pressure in high floors.
  • Anti-Frozen Heating Mould All Round. The tankless gas water heater will auto heating when the ambient temperature <41 ℉. So you don’t need to wait for heating and no drain after the use.
  • 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
  • External adjustable digital thermostatic control with LED display (+/1 degree accuracy
  • Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
  • Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
  • 54 A
  • Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
  • 【SMART INVERTER FOR ENERGY SAVING】The hot water heater built-in smart chip to scientifically calculate the minimum required power based on the water flow and temperature thus costing less energy and money. Save up to 70%. The water flow rate and temp is stable under chip's control.
  • 【EASY TO USE】 The electric tankless water heater comes with digital display & touch control panel for visual setting. Shower head, water valve, pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.
  • 【ENDLESS WATER HEATER】3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to 131 ℉. Tankless electric water heater on demand suits for sinks and bathroom( meet bathing needs except extremely cold winter such as 28℉).
  • 【SAFE DURABLE & LONGEVITY】Multiple safety protection functions protect you from the risk of scald, leakage or other injury. Premium tempered glass shell is corrosion resistant, high-grade and easy to wipe. This mini hot water heater is ideal for kitchen, bathroom, bar, school, hospital, community and hair salon.
  • 【COMPACT & POINT-OF-USE】It is surprised that this electric hot water heater can be installed 360°(no matter mounted horizontally, vertically & obliquely). Dimensions: 7.4″L x2.5″W x11.0″H; 5.13lbs; 1/2″NPT NPT. 7.0 kW, 220-240 volts. One-year warranty and 24H customer service support, feel free to contact us.
  • IMMEDIATE HOT WATER - 1.32 Gallon point of use water heater to supply instant hot water on demand at your sink. 24 hours standby, foam insulation and fast reheating, eliminate the long time wait and wasting water
  • LONG LASTING QUALITY - 1440W stainless steel heating element, protective anode rod, and fused ceramic glass-lined tank to resist corrosion in inner tank, therefor reduce leaking and brown water. 3-year Limited Warranty
  • COMPACT DESIGN - Small tank water heater (9.65"W x9.45"D x21"H including valve), space saving design ideal for under sink placement in kitchen, bathrooms and other areas, even fitting in a cabinet
  • EASY TO INSTALL - 1/2" NPT connector, corded plug into 120V outlet, simply tap into the water line and install the heater directly at the sink. Temparature & Pressure relief valve included, shelf, wall or floor mounted
  • IN-LINE OR INDEPENDENT - Serves as single point water heater or in-line as a booster to a larger hot water heater, knob to adjust temp between 68℉-140℉
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Instant Heating: ThermaCirc360 technology provides faster hot water with a built-in recirculation pump, timer and thermal bypass valve - ideal for homes without a dedicated return line
  • Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream
Product Images, Product Titles, Product Highlights from Amazon Product Advertising API

A Simple Way To Choose The best rated tankless hot water heater For You

Would you like to know how to select the best rated tankless hot water heater to purchase in 2023? We have a straightforward solution for you. First, consider your own requirements. For instance, should you need something that could be used during workouts, look for products that are made of high-quality materials and are resistant to water.

Consider the price range next. Some people prefer low prices, while others prefer to invest additional money on better quality items, so weigh both choices once making a decision.

Eventually, reading reviews is a simple way to select the best rated tankless hot water heater to buy. Please read our research below before purchasing anything and follow that guide to select your best rated tankless hot water heater.

Tankless Or Tank

A tank water heater stores a set amount of hot water and is ready to be sent to several appliances simultaneously. The tankless heaters heat the water quickly and require less space than water heaters with tanks. One unit might not heat enough water for multiple fixtures simultaneously, so it is possible to purchase multiple water heaters.

Tank Capacity

You should make sure your tank heater has enough hot water storage to provide heat for your entire family. Although tank heaters are capable of heating water at multiple locations simultaneously, they will require more time to heat the water. This could lead to unexpectedly cold showers.

Digital Displays

Modern water heaters have digital controls, which allow homeowners to set up the heater to turn off when they are away from home. Although a digital display can increase the initial price of the heater, it also increases the heat efficiency, which ultimately saves money.

Brass Vs. Plastic Drain Valves

A tank water heater has a drain valve located at the bottom that allows for the proper drainage of the tank. The valves can be used with standard garden hoses and made from brass or polyvinyl chloride (PVC). A brass drain valve is better than using plastic for hot water heaters, as brass is more resilient than plastic.

Efficiency Rating

Efficiency ratings are a measure of how efficient water heaters actually heat water. An efficiency rating of.70 for hot water heaters means that 70% of energy used by them heat water.
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.

Space

A lowboy, or shorter water heater might be the best option if you don't have a lot to heat. They are smaller than average and can be used in small homes. You could also consider mini-tank or tankless water heaters. Although gas water heaters are bulky and heavy, it's possible to get smaller models. The size of electric water heaters is generally smaller. If you have limited space, tankless electric water heaters will be the most suitable option.

Gas Or Electric

There are many factors that influence the choice of electric or gas-powered water heaters. These include local utility costs and personal preferences. People who want to save money upfront and those who don't have natural gas in their homes prefer electric water heaters. Gas heaters can be more costly upfront, but they will save you many hundreds of dollars per year depending on the energy cost in your region.

Venting Needs

Electric water heaters do not require venting, so they can be placed in any place in your home. When they heat up, gas hot water heaters emit carbon monoxide and other harmful gases. These heaters use a ventilation system made up of pipes and conduits that removes these byproducts. Gas heaters require venting, take up more space, and are less suitable for homes than electric water heaters.

Anti-Scale Devices

Some companies advertise that they can reduce mineral scale buildup by swirling water. Although scale may reduce the heater's life expectancy, it doesn't mean you have to spend a lot on fancy options. Look for one that comes with a 122023 warranty. This usually includes an element of a greater or lesser thickness.

FAQs

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.

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 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 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.

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 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.

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.

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.

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.

Conclusion

We hope this blog has provided you with useful information about selecting the best rated tankless hot water heater to buy. If you're still unsure, consider why you're purchasing a product in the first place.

Here you can select the Rinnai RL75iP Propane Gas Tankless Hot Water Heater if you are unable to select one of the available items above. Consider whether any of our suggestions aided you in deciding which products to purchase. Please do not hesitate to contact us at any time!


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About Mark Bailey

Mark Bailey
Mark Bailey is a freelance writer with a particular interest in home improvement, home design and gadgets. He has written for a number of online publications and enjoys sharing his passion for all things DIY with others. When he's not writing, Mark can usually be found elbow-deep in a home renovation project or spending time with his wife and two young children.

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